The high-temperature permeability tester for investment casting shell is suitable for measuring the permeability of the shell, meeting the requirements of CICBA/D05, 04-1999, JB/T4153-1999 high permeability method, and HB5352.4-2004 investment casting shell performance test method Part 4: Determination of permeability.
Shell high-temperature permeability tester
1、 Overview:
DTQ-II type shellThe high-temperature permeability tester is suitable for measuring the permeability of investment casting shells, meeting the requirements ofCICBA/D05.04-1999,JB/T4153-1999High transparency methods andHB5352.4-2004Test method for performance of investment casting shell4Part: Determination of breathability.
2、 Main technical parameters:
| name | singlebit | Model and Technical Specifications |
| rated power | KW | 8 |
| rated voltage | v | 220 |
| rated temperature | ℃ | 1350 |
| Empty furnace heating time | min | ≤60 |
| Connection method of electric heating element | | Full series connection |
| Heating element specifications | mm | DG135/100/12/40,Utype |
| Furnace dimensions (length x width x height) | mm | F70×150 |
| weight | kg | 90 |
IIIWorking Principle:
Device configuration:
1Melting furnace: The maximum operating temperature is1300°C
2Quartz glass tube: inner diameter6mm, outer diameter8mm, Length400mm.
3Vernier caliper: with a measuring range of0mm~150mm, accuracy0.02mm.
sample preparation
⑴ Take one celluloid ping pong ball and one quartz glass tube, and heat one end of the tube until250°CInsert the ping pong ball into the center while it is still hot, then use wax (such as beeswax) to firmly stick the ping pong ball to the glass tube and seal it tightly.
⑵ Coat the sample module with six layers according to the general shell making process or according to the regulations of the specialized production process.
⑶ Sample self drying24hThen proceed with roasting. Below100°CEnter the furnace and slowly heat up to250°C~300°CKeep warm for a period of time to make the ping pong ball vaporize, then gradually heat up to900°C(Water glass, quartz shell)750°C),insulation2h, reduced to300°CThe following is released.
⑷ Sample quantity：The effective number of samples is3One.
4Product composition:
| serial number | name | quantity | prepare note |
| 1 | DTQ-IITest host | 1platform | Including electric furnace and electrical control part |
| 2 | Oil free air compressor | 1platform | 750W-30L |
| 3 | gas flow meter | 1a | MF4000series |
| 4 | pressure regulating valve | 1a | |
| 5 | UType silicon carbon rod | 1set | Installed into the electric furnace |
| 6 | SDividing number thermocouple | 1branch | |
| 7 | quartz tube | 1branch | inner diameter6mm, Length400mm |
| 8 | Pressure gauge | 1set | |
Typical users:
Institute of Metals, Chinese Academy of Sciences(Shenyang)
Qinhuangdao Fuge Technology Co., Ltd
Beihang University Ningbo Innovation Research Institute
Hangfa Youcai (Zhenjiang) Titanium Alloy Precision Forming Co., Ltd
