Hot deformation Vicat softening point tester

AVIC Time-TVST-300H-4-Thermal Deformation Vicat Softening Point Tester

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I. Overview

This seriesHot deformation Vicat softening point testerDesigned and manufactured according to national standards GB1633-2000 and GB1634-2019, it meets the requirements of international standards ISO75-1993 and ISO306-1994. It is suitable for measuring the load deformation heat deformation temperature and Vicat softening temperature of polymer materials such as plastics, rubber, nylon, etc. in chemical enterprises, research institutes, and colleges and universities.

Due to the use of microelectronics and computer control technology, this series of products has the advantages of automated and programmed testing processes. At the same time, it also realizes functions such as parameter input, data processing, color curve display, large capacity data storage and plotting, and printing test reports.

Hot deformation Vicat softening point testerThe product adopts our company's computer-controlled uniform temperature rise and fall technology, which has successfully manufactured a PTC test controlled uniform temperature rise and fall system for Zhejiang University.

2、 Main technical indicators

1. Temperature control range: Room temperature to 300 ℃ (23-27 ℃)

2. Temperature measurement accuracy: ± 0.5 ℃

3. Uniform heating rate: A Speed: 5 ± 0.5 ℃/6 min 50 ± 5 ℃/60 min

Ｂ速度： 12±1.0℃／6 min 120±10℃／60 min

4. Deformation measurement range: 0-3.00 mm

4Digital display resolution: 0.001 mm

5. Heating medium: Methyl silicone oil (below 200 cm-1, flash point above 300), transformer oil, ethylene glycol, liquid paraffin, etc

6. Power supply: 220V 50Hz 20A

7. Test unit: This series is divided into three unit type, four unit type, and six unit type according to the number of test stands

8. Maximum heating power: Six unit type ≤ 6000W; Four unit type ≤ 4500W; Three unit type ≤ 4000W

3、 Basic composition and working principle of the instrument

1. The components of this series of instruments are:

⑴For the main frame unit: main frame, oil bath box, heating and homogenization stirring device, water cooling device, motor screw lifting mechanism, sample placement mechanism.

⑵Electrical control and measurement unit: composed of external oil temperature sensor, external digital displacement micrometer device, electrical control switch components, position detection sensor, temperature control module, displacement control circuit, central control circuit, and external control switch.

⑶The computer measurement part includes Windows 10 64 bit genuine system, Office genuine, Vicat and thermal deformation test green version measurement and control software.

⑷Attachment: Tools and Weights

2. Fix the hot deformed or Vicat specimen prepared according to the standard on the test stand, then immerse it in an oil bath box, and install a weight tray and deformation sensor above the pressure head. When the deformation detected by the deformation sensor reaches the preset value, the temperature sensor detects the temperature value inside the oil bath, which is the thermal deformation temperature or Vicat softening point temperature of this material. The relevant data and curves during the experiment are displayed and stored by the computer, and data and curve reports can be printed out.

4、 Installation and commissioning of instruments

1. Place the host on a level and solid ground, place the four attached foot wheels on the solid cement ground, and then use a level to adjust the host to a horizontal state by adding footings through the four foot pads based on the host's tabletop.

2. Connect the power cord, control cord, data cable of the digital display meter, and data cable of the temperature sensor to the corresponding sockets at the front and rear of the host.

3. Front view diagram of mechanical host, Figure 1

Figure 1 Schematic diagram of the back of the host

⑴Conventional power switch: This switch must be turned off after completing the test.

⑵Alarm indication: Alarm when entering constant temperature time (when the set temperature is greater than or equal to the oil temperature in the fuel tank)

Alarm before the actual start of the experiment.

Alarm after the experiment is completed.

⑶The touch screen controls the hardware circuit and integrates physical buttons onto the touch screen.

⑷Large weight tray, loading area for large weights weighing over 100g

⑸Small weight tray, it is recommended to load individual small weights here

⑹Displacement measuring device micrometer

⑺The cover plate of the electrical control box is opened, and all electrical control components and circuits are inside. It is recommended that customers do not consult with after-sales service for permission,

4 Figure 2A schematic diagram of the back of the host, where:

Figure 2 Schematic diagram of the back of the host

①Power cord interface: Connect the cable plug of the power cord here, and connect the other end to a 220V AC power supply.

②Main power switch: During testing, turn on this switch. If not in use for a long time, turn off this switch.

③ Maximum temperature controller: This device is a temperature control upper limit device. When it reaches 300 ℃, it will automatically cut off all heating devices. It is an independent protective device that has been set by the manufacturer before leaving the factory, and users do not need to adjust it.

④Smoke exhaust switch: used to turn on/off the smoke exhaust fan (upward is turned on).

⑤Uniform oil temperature speed control motor controller: If the oil temperature is uneven during the test, adjust the knob to increase the stirring force. After the factory settings are completed, ordinary users do not need to make any changes.

⑥Inlet and outlet: When water cooling is required, the water source can be connected to the inlet, and the outlet can be connected to the wastewater discharge area. Both the inlet and outlet have corresponding labels.

Attention: When connecting to a water source, if it is a closed water source such as circulating water or tap water, please install an exhaust valve at the outlet because the internal cooling water will be discharged when the instrument is heated up.

⑦ Oil discharge pipe: The oil from the oil bath tank is discharged here.

⑧ Overflow port, please place the oil receiving device here. The silicone oil may expand at high temperatures and overflow. After cooling down after each test, pour the oil collected by the oil receiving device back into the oil tank.

⑨The unmarked part of this diagram is the wiring of the deformation sensor. It has already been connected during factory debugging by the manufacturer, and the user does not need to make any changes. It is only necessary for debugging and after-sales service. Temperature sensor port: Connect one end of the control wire to the temperature sensor connector, and the manufacturer's debugging personnel have installed it in place.

5 Figure 3A schematic diagram of the side of the host, where:

Figure 3 Schematic diagram of the side of the host

⑴Rotate the screen handle: tighten clockwise, loosen counterclockwise

⑵Communication port: Connect the cable between the computer and the host for communication.

⑶Forced up and down: These two buttons do not activate any limit when lifting the test frame mechanism. They are only supplementary buttons for special applications or front-end button failure. Please do not press them easily.

⑷Push pull handle: The four handles of the instrument are only suitable for use when pushing and pulling on the ground, and are not suitable for lifting the instrument for a long time under heavy loads.

Figure 4 Schematic diagram of the side of the test stand

6 Figure 4A schematic diagram of the side of the host, where:

⑴This experiment tests two types of samples: Vicat softening point probe and load bending thermal deformation probe

⑵There are two types of hot deformation span support points: 64mm and 100mm at the center of the support point. When using 100mm, the translation support point should be disassembled

⑶ It is recommended to regularly inspect the guiding device and conductive deformation device during each sample installation

⑷ The temperature sensor has been fixed in the corresponding position at the factory or during debugging, and can be easily moved

⑸ The standard thermometer calibration is inserted into the calibration hole. This instrument has been calibrated before leaving the factory and is usually covered with a cap to prevent the emission of heated oil fumes

5、 Hardware installation connection and software installation

1 Color display touch screen connector connection plug

2 Communication cable: There are two 9-pin plugs at the back of the computer host, one is a hole and the other is a pin, and the other end is connected to the host.

3 Install deformation sensor (dial gauge) and temperature sensor

4 Plug 220V 16A, it is recommended that units with conditions directly connect it to an air switch of 20A or above

5 Connect the ground wire to the machine casing

6 Please check the oil drain switch and confirm that the valve is closed when filling oil for the first time.

7 Please place the oil receiving device at the overflow oil outlet

8 The computer system defaults to Windows 10 64 bit system, original brand system, do not change it easily

9 The software contains a series of files in the E: \ \ \ \ executable program folder

ZNSRBX-300.EXE hot deformation test, ZNSWK-300 Vicat softening point test

10 E: There is a folder under the drive letter WSM containing system files. Please do not delete them

11 If reinstalling, simply copy the contents from the CD to the E drive.

12 Methyl silicone oil with a viscosity of less than 200 microns and a flash point of over 300 ℃, added in an appropriate amount

Approximately 35kg or more than 5cm of submerged sample, this machine is equipped with an overflow oil outlet, which can be observed at a distance of more than 1cm from the overflow oil outlet on the rear side of the fuel tank wall.

VI Test Procedure

1 Turn on the power switch on panel 5 in Figure 5

Figure 5 Operation Panel

①The power switch and alarm indicator will sound an alarm during constant temperature and at the end of the experiment.

2 Color display screen entry interface Figure 6

Figure 6 Touch screen interface

3 The help interface and time calibration interface in Figure 7 are not required for users to use: the help interface is used to record sales and addresses for users. The time setting is calibrated by the debugging personnel at the factory, and users do not need to operate or change it.

Figure 7

Enter the computer control interface and display Figure 8

Figure 8 Main interface of the experiment

Number one, two, three, four, five, six, deformation and temperature display

Mixing, heating, loading, unloading, lifting, and lowering replace physical mechanical buttons without the need for computer control

In the interface of Figure 6, the computer is not communicating

4 Computer software interface

4.1. Desktop login softwareDouble click with the mouse to open the login interface, as shown in Figure 9

Figure 9

Among them, ZNSRBX-300 is a hot deformation test; ZNSWK-300 is a Vicat test,

4.2. Choose to enter one of the experimental interfaces as shown in Figure 10

Figure 10

① : Open file ②: Save file ③: Save word ④: Curve echo display

⑤ : Print Preview ⑥: Port Settings ⑦: Temperature Correction ⑧: Exit Program

4.3 Parameter Setting

Figure 11

⑴Experimental unit、Testing unit、Test personnel、Heat transfer medium、ambient temperature、ambient humidity、Material Specifications、Material Name、Material manufacturer、Material batch number、sample preparationAll items are reflected in the relevant items of the test report form, please fill in as needed.

⑵Test DateThe item is automatically filled in by the software reading the current date and time of the computer.

⑶inrelevant standardsSelect the standard number based on which this experiment is conducted.

⑷inplacement methodSelect the placement method for the sample, where "flat placement" indicates flat placement and "side placement" indicates side placement.

⑸According to the placement of the sample, inSample spanFill in the corresponding span value in the item.

⑹During the experiment, when the oil temperature inside the oil bath stabilizes toInitial temperatureThe next step of the experiment can only be carried out when the temperature value is filled in the item.

Note: Clause 8.2 of GB/T 1634.1-2004/ISO75-2004 states that at the beginning of each test, the starting temperature should be lower than27℃Unless previous experiments have shown that starting the test at higher temperatures will not cause errors for the specific material being tested.

⑺During the experiment, when the oil temperature inside the oil bath reachestermination temperatureWhen the temperature value is filled in the item, the system stops heating. Note: This value should be greater than the thermal deformation temperature value of the tested material.

⑻During the experiment, the system follows theheating rateThe selected rate for heating the oil bath box is5℃/6minand12℃/6minOptional.

⑼According to the number of test racks, the software will list the corresponding number of sample information columns for filling in sample data. Measure the thickness and width values of the sample with a vernier caliper, accurate to 0.1mm, and fill them insample thicknessandsample widthWithin the item.

According to the placement of the sample, search for the deflection value corresponding to the thickness or width value in the table on page 7, and fill it indeformationWithin the item.

Search for the table on page 9 and fill in the corresponding bending stress values for the selected methodBending normal stressWithin the item.

⑽instorage pathYou can set the storage location and file name for the results of this experiment. clickpath selectionButton pops upFigure 12Use the dialog box shown to set the save path and file name. If not filled in, a prompt will pop up when clicking OK, and the file will be saved in the default path with the current date and time as the file name.

⑾ "√" option is selected by default, removing "√" means not selected, and can only be saved once

Figure 12

4.4.1Requirements for the sample

This method is commonly referred to as HDT (Hot Deformation Test). The requirements for the specimens used in the thermal deformation test in clause 6 of GB/T1634.1-2004/ISO75-2004 standard are as follows:

⑴ Shape and size:

The sample should be a rectangular cross-section spline, with length l, width b, and thickness h satisfying l>b>h.

The specific size requirements for the sample vary depending on the placement method, which will be explained in the introduction of the placement method.

⑵ Requirements for the sample:

The sample should not have any warping caused by asymmetric thickness.

The sample should be free from distortion and its adjacent surfaces should be perpendicular to each other. All surfaces and edges should be free of scratches, dents, dents, and burrs.

It should be ensured that all cutting surfaces of the specimen are as smooth as possible, and that any unavoidable machining marks follow the long axis direction.

4.4.2 Sample placement method

The hot deformation test is divided into different types based on the placement of the specimenFlat placement methodandSide placement methodTwo types. Below, we will introduce these two placement methods separately. Clause 1.6 of GB/T1634.1-2004/ISO75-2004 mentions that Part 2 of GB/T1634 allows the use of two sample placement methods.

1. Flat placement method

① Sample size for flat placement method：

Length l: (80 ± 2.0) mm Width b: (10 ± 0.2) mm Thickness h: (4 ± 0.2) mm

② The span of the specimen in a flat manner:

The span (distance between the two contact lines of the support and the specimen) should meet the following requirements（64±1）mm

③ Standard deflection for flat placement:

The standard deflection corresponding to different specimen heights (specimen thickness h) during the flat test is shown in the table below.

2. Side placement method

① Sample size for side placement method：

Length l: (120 ± 10) mm Width b: (9.8-15) mm Thickness h: (3.0-4.2) mm

② Sample span for side placement method:

The span (distance between the two contact lines of the support and the specimen) should meet the following requirements（100±1）mm

③ Standard deflection for side placement:

The standard deflection corresponding to different specimen heights (specimen width b) during the lateral test is shown in the table below.

4.4.3 Calculation of applied force

Note: The force calculation section is only for introduction. During the testing process of this series of testing machines, the size of the load weight to be loaded is calculated and prompted by the software, and does not require manual calculation by the user.

In the three-point loading method adopted in GB/T 1634, the force F applied to the specimen is measured in N as the bending stress σｆThe function is calculated by equation ① or equation ②:

If the sample is placed flat:

2sｆ·ｂ·ｈ2

F=------------------ Equation ①

3 L

If the sample is placed on the side:

2sｆ· h · b2

F=-------------------------------------------------------------------

3 L

Where:

F -- Load, unit: Newton (N)

σｆ————The bending stress borne by the surface of the specimen, measured in megapascals (Mpa), σｆThe size is shown in the table on the next page

B -- Sample width, in millimeters (mm)

H -- Sample thickness, in millimeters (mm)

L - Distance (span) between the contact line between the specimen and the support, measured in millimeters (mm)

When measuring b and h, it should be accurate to 0.1mm; when measuring L, it should be accurate to 0.5mm.

When applying the test force F, the mass m of the loading rod should be consideredtThe impact needs to be considered as part of the testing force. If using a spring loading instrument, the spring should also apply force FsThe magnitude and direction of the total force F are positive or negative.

To achieve a quality of mwIf the additional weight is placed on the loading rod to generate the required total force F specified in equation ①, then:

F ＝ 9.81（mw＋mr）＋FsEquation ③

F- Fs

mw＝ ——— - mrEquation ④

9.81

Where:

mr————The mass of the loading rod applying the test force, in kilograms (kg)

mw————The mass of the additional weight, measured in kilograms (kg)

F - The total force applied to the specimen, measured in Newtons (N)

Fs————The force generated by the loading spring of the instrument used, in newtons (N)

The actual applied force should be the calculated force F ± 2.5%

According to clause A.4 of GB/T 1634.2-2004/ISO 75-1:2004, the applied bending stressσｆIt should be one of the following:

4.5 Test steps

①Inject test oil into the oil bath box, check the power cord, data cable, inlet and outlet pipes, etc., ensure they are all connected, turn on the power switch of the host and preheat for 30 minutes.

②Lift the test stand, then lift the hot deformation indenter, place the specimen in the center on the span positioning rod, and clamp the specimen with a fixture,Figure 13For the flat placement methodFigure 14It is a side placement method.

Attention: When placing the sample in a side position, it is necessary to remove the two 64mm span positioning rods and use the two outer 100mm positioning rods.

Figures 13 and 14 are only reference images

③Ensure that each digital display is turned off for special function status and the display unit ismm, sequentially press on each digital display“0.000”Press the key to reset the displayed value to zero (note: the digital display is automatically powered on, there is no battery, the power on status is mm in the upper left corner, ABS in the upper right corner), and then turn on the heating switch and equalization switch.

④Click on "Parameter Input" on the main interface of the experimental software to switch to the "Data Display Interface"

Figure 15”The software prompts the weight mass that needs to be loaded for each test stand. Please follow the instructions for the disc weightFigure 15Place the small weights symmetrically on the disc weights on the weight tray as shown.

Figure 15

⑤Adjust the automatic loading device as shown in Figure 16; Firstly, lower the "positioning nut" to a certain height away from the weight, and lock the nuts at both ends with consistent height. Loosen the "locking nut" and slide it down. After loading, express the deformation to about 5mm or the value you need. It is possible that the values displayed on each dial indicator are different due to installation height issues, as long as the dial indicator pointer is displayed vertically

Just enough.

After one adjustment, there is basically no need to adjust the sample again.

Figure 16

⑥Start "Button, the instrument automatically puts the sample into the oil bath environment. When the "starting temperature" is set to be close to or greater than the internal temperature of the oil tank, the software will prompt a dialog box that a constant temperature operation is being performed, and the alarm device will beep for 300 seconds. During the process, "automatic loading", "load reset", and "constant temperature time" will appear, and a dialog box will prompt "whether to continue the test". The alarm device will beep. Please make sure to observe whether the dial gauge (deformation sensor reset) and temperature sensor are normal before the test. All temperature sensors should display similar numbers.

⑦“Please do not operate computer devices such as mice and keyboards during the experimental run, as this experiment is relatively slow and has a long cycle, and the sample cannot be operated repeatedly.

⑧ After the experiment, a dialog box will pop up as shown in Figure 17

Figure 17

Without selecting a save path, the default file name is in the E: \ \ \ \ Execute Files \ \ \ \ Thermal Deformation Data \ \ \ \ folder with the start date, month, day, hour, minute, and second of the experiment.

⑨ View Test Data "Double Click to Display" Toolbar Figure 18

Figure 18

⑩ Double clickPrint Preview "Figure 19

Figure 19

This report is original data and cannot be altered

⑾ Save as Word format, which will be generated in the E: \ \ \ \ executable file \ \ \ Word test report

Figure 20

Figure 20

This report contains Word data that can be modified

If you don't need to generate a Word report, you can always "open the folder" to call the data again and then display the generated report.

4.6 Select Vicat Test "ZNSWK-300"

The interface is shown in Figure 20 below

Figure 20

⑴Experimental unit、Testing unit、Test personnel、Heat transfer medium、ambient temperature、ambient humidity、Material Specifications、Material Name、Material manufacturer、Material batch number、sample preparationAll items are reflected in the relevant items of the test report form, please fill in as needed.

⑵Test DateThe item is automatically filled in by the software reading the current date and time of the computer.

⑶inrelevant standardsSelect the standard number based on which this experiment is conducted.

⑷According to the selected experimental method, the load value isweight of the weightSelect the corresponding item.

⑸indeformationFill in the depth value of the indenter pressed into the sample, as specified in Article 3 of GB/T 1633-2000 standard1mm.

⑹During the experiment, when the oil temperature inside the oil bath stabilizes toInitial temperatureThe next step of the experiment can only be carried out when the temperature value is filled in the item.

⑺During the experiment, when the oil temperature inside the oil bath reachestermination temperatureWhen the temperature value is filled in the item, the system stops heating.

Note: This value should be greater than the Vicat softening temperature of the tested material.

⑻During the experiment, the system follows theheating rateThe selected rate within the item heats up the oil bath tank,

have5℃/6minand12℃/6minOptional.

⑼The save location and file name for the results of this experiment can be set within the save path. If not filled in, they will be saved in the default path with the current date and time as the file name.

⑩Replace the Vicat probe and sample image 21

⑾The sample has an area of 1 square centimeter and a thickness according to the standard requirements≧Square samples larger than 3mm.

⑿Select the number of racks, "√" indicates selection, and "√" indicates not selecting this test rack.

⒀Double click on the bottom left corner of 'Data Display' to display the actual number of weights that should be added.

⒁Adjust the height of the loading mechanism according to the actual requirements of the weights. The specific operation is consistent with the thermal deformation test.

The experimental results are consistent with the thermal deformation operation, as shown in Figure 22

Figure 22

⒃The format of report Figure 23 and Word report Figure 24 is basically the same, except that the content storage address is different. The Vicat is stored in the E: \ \ \ \ Execute Program \ \ \ Vicat Data folder

Figure 23

This report is original data and cannot be altered

Figure 24

This report contains Word data that can be modified

7、 Special precautions:

①The power supply provides a 220V 20A good grounding wire

② The mechanical temperature protection device should not be adjusted by the factory or debugging personnel without authorization

③ When pouring oil into the tank, be sure to check whether the oil drain valve is locked first, and the oil receiving device must be placed at the overflow port

④The deformation sensor and temperature sensor must have contact locking at the joint

⑤The small screw connecting the computer and the host must be securely locked

⑥After the high-temperature experiment, do not touch the raised sample and frame to prevent burns.

⑦It is recommended to use water cooling whenOpen within 100 ℃, and natural cooling is preferred above 100 ℃; Cool down to 100 ℃ before starting water cooling.

⑧Before starting the experiment again, please check if the water cooling device has stopped and if the exhaust valve is open (the exhaust valve is installed by the customer themselves and is used for cooling with tap water or circulating water)

⑨Observe whether the deformation sensor and temperature sensor display normally on the color screen before the experiment

⑩Please pay attention to observing whether there is any phenomenon of excessive lifting or abnormal noise when the instrument is lifted or lowered. Please turn off the power switch and check the limit.

The temperature correction coefficient has been calibrated before leaving the factory, and it is prohibited to modify it without standard temperature measuring instruments

8、 Troubleshooting:

① Computers do not have temperature and deformation values:

⑴Color screen startup image6Did not switch to the image8

⑵image8Do not display temperature and deformation values: Check the temperature and deformation meter connections. If all connections are normal but still not displayed, please contact the manufacturer.

⑶image8Display temperature and deformation values: Check if the connection between the computer and the host is dropped incorrectly

② The instrument temperature does not rise:

⑴Check if the connection between the host and computer, as well as the heating switch on the screen, are turned on normally

⑵Restart the software and set a higher starting temperature again (greater than the current oil temperature)Observe at 5 ℃

③ The up and down buttons on the screen cannot be controlled: check the connection between the screen and the host

④Cannot reset automatically: Check the status of the dial gauge

③ Abnormal temperature correction coefficient prompt:

⑴viewE:\\\\WSMDoes the folder exist

⑵Delete?wsmFiles in folder

⑶Re calibrate or locate the factory CD

Attached page:

Conventional microcontroller experimental steps:

1. Turn on the power and enter the following interface

2 Choose between hot deformation test and Vicat test: Choose between hot deformation test and Vicat test as follows:

2.1. The parameter setting interface is as follows: Enter the corresponding data according to the interface conditions. Each time you select or enter a value, you must choose to save it, and the selected data is only valid for the current experiment.

Hot deformation parameter interface

Vika interface

Specific details can refer to the steps of computer experiments

2.2. Return to the main interface of the experiment

2.3. Control "stirring", "heating", "rising", "falling", "loading", "unloading" separately to achieve the corresponding purpose and start the test. After the start of the experiment, the "heating rate" and "test time" begin to show changes.

2.4 After the experiment is completed, the instrument will automatically stop. Click on "Test Report" to select whether to record or print based on whether the instrument is equipped with a printer.

Hot deformation test report:

Vika test report: