Hydrogen cylinder spinning machine

NegotiableUpdate on 05/14

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Overview

Hydrogen cylinder spinning machine

Product Details

Hydrogen cylinder rotary compressor

In recent years, in response to the market demand in the gas cylinder industry, our company has designed and developed two spinning equipment suitable for producing and processing gas cylinders, namely the three wheel horizontal spinning machine and the closing spinning machine
Used for rough pipe making, the closing machine is used for closing gas cylinders.
- Three wheel horizontal strong spinning machine
The three wheel horizontal strong spinning machine is a CNC metal spinning machine specially designed and manufactured for the strong thinning spinning of workpieces with different diameters, such as pipes, barrels, or small cones. It can achieve both forward and reverse rotation,
There are various spinning techniques such as variable diameter spinning and step spinning. The equipment has high strength and high precision,
The high stability characteristic allows for mass production or special trial production tasks. We have a total of this device
Two models, TW60 and TW80, have the following equipment technical parameters:

TW60Three wheel horizontal strong spinning machineTW80Three wheel horizontal strong spinning machine
Processing method: Horizontal three wheel CNC spinning Processing method: Horizontal three wheel CNC spinning
Raw material diameter: Max Ø 600 min Ø 70 Raw material diameter: Max Ø 820 min Ø 280
Positive rotation length: 3500mm Positive rotation length: 3000mm
Reverse rotation length: 5000mm Reverse rotation length: 4000mm
Material thickness: Aluminum alloy 20mm
Spindle:
Low carbon steel 15mm spindle motor power: 200KW
Spindle speed: 10--- -66rpm (1st gear)
Technical specifications: 10-200rpm (2nd gear)
Radial travel 260mm (two speed, continuously variable in gear)
Axial stroke 3500mm machine tool spindle installation end face runout:
The maximum movement speed of each axis is 2m/min ≤ 0.02mm
Lateral axial thrust 250KN * 3 radial runout: ≤ 0.02mm
Longitudinal axial thrust 320KN, radial stroke of rotary wheel: 280mm
Radial positioning accuracy 0.02mm, longitudinal stroke of rotary wheel: 3500mm
Axial positioning accuracy 0.06mm Rotary wheel radial movement speed:
Repetitive accuracy 0.02mm max 800mm/min
Manual adjustment of three wheel offset mode, with a distance of 10mm, the axial movement speed of the rotating wheel is:
max 4000mm/min
Tail top - radial thrust of rotary wheel: 400KN
Spindle tailstock dual center distance 4200mm axial thrust: 450KN
Radial positioning accuracy of tail top longitudinal travel rotary wheel: ≤ 0.02mm
Base 3000mm+top pole 500mm, longitudinal positioning accuracy of rotary wheel: ≤ 0.04mm
Tail seat lateral offset 400mm, longitudinal repeat positioning accuracy: ≤ 0.015
Tail top force max 100kn (adjustable), radial repeat positioning accuracy: ≤ 0.025mm
Three wheel wrong distance travel: 0-30mm
Unloading method - End face runout of rotary wheel shaft: ≤ 0.020mm
1. The spindle top stroke is 100mm, and the radial runout of the rotary wheel shaft is ≤ 0.020mm
2. Sliding table material return stroke 3500mm Rotary wheel transverse feed guide rail straightness: ≤ 0.02mm
Radial feed guide rail straightness of rotary wheel: ≤ 0.02mm
Main spindle - Longitudinal feed rail of rotary wheel seat, straightness of the entire length:
Spindle power 110KW ≤ 0.070mm
Spindle speed: 0-500rpm Tail top:
Hardware configuration: Tail top dual center distance: 1500-6500mm
Longitudinal travel of tailstock: 4200mm
Control Method: Siemens 828D/840D CNC System Tail Top Lateral Travel: 800mm
Feed power: Siemens servo motor 1FK7 series tail force: 50-300kN (adjustable)
Drive control: Siemens S120 Control system: Siemens 840DSL
Main spindle power: 110kw servo motor (Beijing super synchronous) rotary wheel feed power:
Siemens servo motor 1FT7 series
Spindle Control: Servo Drive (Beijing Super Synchronous) Drive Control: Siemens S120
Hydraulic station power 30KW, spindle power:
Beijing Super Synchronous 250KW Spindle Servo Motor

Equipment occupation: Equipment occupation:
Length 10 meters * Width 5 meters * Height 3 meters Length 12.5 meters * Width 5.5 meters * Height 4.7 meters
The total power of the equipment is 200kw, and the total power of the equipment is 300kw,
Weighing approximately 130 tons.

Manufacturing of high-pressure gas cylinders

blank

The production of 6061 aluminum alloy tube blank has certain requirements. The lathe processing should ensure uniform wall thickness and control the wall thickness difference within 0.10mm. In this way, the tube produced by three rounds of strong rotation can effectively control its wall thickness accuracy, as well as better surface texture and smoothness; At the same time, the outer surface of the tube blank must have a good smoothness during turning, otherwise there will be peeling on the surface of the spun tube. The qualified pipe blank is shown in the following figure:

Three wheel strong spinning tube

6061 aluminum alloy belongs to the Al Mg Si system, characterized by moderate strength, good plasticity, weldability, and cold workability, especially without a tendency towards stress corrosion cracking. Under its chemical composition and mechanical properties chart:

After consulting relevant materials and conducting extensive experiments, we have developed some spinning techniques for the three wheel strong spinning tube

Summary:

The influence of wall thickness reduction rate

According to relevant literature, the ultimate thinning rate of 6061 aluminum alloy is 75%. If the thinning rate of the spun wall thickness approaches 75%, it may cause microcracks to appear in the spun parts. In addition, the thinning rate is not only limited by the material's spinnability and the spinning equipment's ability, but also by the precision and performance requirements of the spun parts in the process. In general, if the thinning rate is too small, the difference in deformation between the inner and outer surfaces of the cylindrical part will be too large, resulting in significant performance differences. On the contrary, excessive thinning rate will increase the accumulation of material in the front of the spinning wheel, resulting in excessive uplift and reduced spinning stability, especially for thick walled blanks

The influence of feed ratio

Increasing the feed ratio can shorten the spinning time and improve productivity, but if it is too large, it can easily cause material accumulation and bulging before the spinning wheel, increase surface roughness, and cause the workpiece to shrink in diameter. In severe cases, it can tighten the core mold and make it difficult to demold the workpiece; On the contrary, a feed ratio that is too small leads to excessive material flowing in the tangential direction, resulting in poor material adhesion, enlarged inner diameter, and increased ellipticity. This not only reduces productivity but also causes the workpiece to become excessively thin. Therefore, when performing multiple passes of strong spinning, if the machine tool capacity allows, a large feed ratio should be used in the initial pass to improve machining efficiency and ensure that the workpiece tightly holds the mold; Using a small feed ratio in the process before unloading is beneficial for reducing surface roughness and also for demolding the workpiece.

The influence of axial displacement

Misalignment spinning is a method of forming parts by spinning three spinning wheels that are offset by a certain distance from each other. Misalignment spinning can distribute the deformation of one spinning process to several spinning wheels, significantly reducing the burden borne by each spinning wheel. It is also possible to increase the deformation of the spinning passes appropriately within the allowable range of the material, thereby reducing the number of spinning passes and improving the spinning efficiency. At the same time, during the staggered spinning process, the front spinning wheel exerts axial tension on the billet before the rear spinning wheel, increasing the radial constraint on the deformation zone of the rear spinning wheel, thus improving the diameter accuracy of the workpiece.
The axial displacement of the rotary wheel should be set reasonably. The axial misalignment should not be too large. If it is too large, there will be multiple thread trajectories, and the bending moment generated by the core mold will also increase. The workpiece will become unstable, twisted, and have poor roundness. The residual section of the blank that cannot be fully rotated will also be longer, and the material utilization rate will decrease. Too small axial displacement can cause severe uneven force distribution among the spinning wheels, which can affect the stability of the spinning process of the preceding wheel when the latter wheel undergoes deformation during spinning.
- Closing spinning machine
The closing spinning machine is a specialized equipment for closing and thickening the mouth of high-pressure gas cylinders, with automatic ignition and heating function. We also have two models of this equipment, SK460 and SK640, with the following equipment parameters:

640Closing machine parameters:

1.1.1 Maximum diameter of processed workpiece 640 mm
1.1.2 Processing product length 800-3500 mm
1.1.3 Processing thickness (aluminum alloy) 5-20 Mm
1.1.4 Spindle speed 0-350 rpm
1.1.5 Spindle power ≥ 110 KW
1.1.6 Hydraulic system motor power ≥ 15 KW
1.1.7 Hydraulic oil tank capacity 200 L
1.1.8 X-direction feed thrust ≥ 140 KN
1.1.9 X-direction travel ≥ 500 mm
1.1.10 Z-direction feed thrust ≥ 140 KN
1.1.11 Z-direction travel ≥ 950 mm
1.1.12 X feed rate 0-4000 mm/min
1.1.13 Z-direction feed rate 0-4000 mm/min
1.1.14 Wheel positioning accuracy ≤ 0.04 mm
1.1.15 Rotary wheel repeat positioning accuracy ≤ 0.02 mm
1.1.16 Fast feed rate in X and Z directions, fast retreat speed 0-4000 mm/min
1.1.17 Hydraulic system working pressure 10 MPa
1.1.18 Hydraulic system pressure ≥ 14 MPa
1.1.19 Parallelism of guide rail ≤ 0.03 mm
1.1.20 Radial runout of rotary axle flange ≤ 0.03 mm
1.1.21 Can achieve two types of automatic tool changing function for rotary wheels
1.1.22 Heating gun (German Messer 5 #) 3 pieces
1.1.24 Equipment occupation (length * width * height) 10500x4800x2200mm
1.1.25 Installed power 135KW
1.1.26 Weight approximately 21000kg
1.1.27 Environmental temperature: 0 ℃~40 ℃
1.1.28 Average environmental humidity: 85%
1.1.29 Voltage AC380V ± 10%
1.1.30 Three phase AC frequency 50HZ ± 1%

460Closing machine parameters:

Processing method: Horizontal CNC spinning and closing
The maximum diameter of the raw material is 470mm
Maximum product length 3000mm
Materials: Aluminum, copper, carbon steel, stainless steel and other metals
Machinable thickness range
≤ 20mm (6061 aluminum)
TECHNICAL INDEX
X-axis displacement 400mm
Z-axis displacement 700mm
X. Maximum Z-axis movement speed 4000mm/min
X. Z rated thrust 120KN
Axial positioning accuracy ≤ 0.04mm
Repetitive positioning accuracy ≤ 0.02mm
Spindle speed 0-500rpm
Maximum torque 1400NM
hardware configuration
Control mode: Siemens 828D CNC system
Feed power Siemens servo motor
Drive control Siemens S120
Spindle power 75KW variable frequency motor
Silver heavy-duty linear slide rail on the sliding table track
Heavy duty silver ball screw
Knife holder dual station hydraulic cylinder drive
Hydraulic station 25MPa, 50L/min

Closing of high-pressure gas cylinder:

6061The closure of aluminum alloy gas cylinders is achieved through hot spinning, which is crucial for temperature control. If the temperature is too low and the plastic deformation of the tube material is too small, it will be squeezed and broken; If the temperature is too high, the material will melt and the spinning will cause the phenomenon of falling pieces and cracking. Therefore, the temperature must be controlled within a reasonable range.
The selection of spinning wheels is very important, and it is necessary to use wheels with large rounded corners. If the rounded corners are too small, the material will be stretched and the thickening effect cannot be achieved. The design of its spinning process cannot be treated as a regular closing spinning process, and due to technical confidentiality reasons, it will not be described here.
The small mouth straight section of the gas cylinder needs to be spun longer because the maximum wall thickness after molding is located in the middle of the straight section.

Some users of the powerful three wheel powerful rotary press machine:

Shaanxi Huatong Electromechanical Manufacturing Co., Ltd
Nantong CIMC Energy Storage and Transportation Co., Ltd
Shandong Aoyang New Energy Technology Co., Ltd

Partial users of gas cylinder closing machine:

Nantong CIMC Energy Storage and Transportation Co., Ltd
Shandong Aoyang New Energy Technology Co., Ltd
Shijiazhuang Anruike Gas Machinery Co., Ltd

Hydrogen cylinder spinning machine

Overview

Product Details

Some users of the powerful three wheel powerful rotary press machine: