Gas cylinder tube is a general term for the production of seamless tubes for gas cylinders and high-pressure vessels. There are many types of gas cylinders. In addition to general oxygen cylinders and hydrogen cylinders, they are also used as various high-pressure accumulators. High pressure, large space utensils and fire safety, mine, deep diving, mountain climbing and medical rescue and other unique and main purposes of lightweight portable thick wall high pressure gas cylinders.
Therefore, the raw material of the gas cylinder is a vital raw material belonging to the relevant personal safety and the safety of the machinery and equipment.
Gas cylinder tube processing technology
one. Hot rolling process line:
Pipe material preparation in advance - annular furnace - hole breaking - continuous rolling - rapid re-heat treatment furnace - Zhang reduction - cooling bed
two. Ring furnace:
Published temperature 1290℃
three. Broken hole:
1. Capillary Specifications Model: 222X13mm
2. Capillary sampling: diameter 220 ~ 222 mm
Diameter 14～15mm
3. Machine and equipment preparations: 1. Hexagonal inspection in the base of the guide plate (removal and replacement of the hexagonal sleeve in the right guide plate)
2. The guide plate anchor bolts and the base anchor bolts are replaced and tightened
3. The hole-breaking roller is a new roller (roller diameter 1030mm)
4. The main parameters of cold rolling: 1. The roll speed and the speed of the guide plate are slightly lower for cold rolling, and the entrance and exit speed is 0.8 m/s
2. The roll distance of the new roll is larger than the design scheme (the guide distance and the amount of the top front are consistent with the design scheme)
Four. Continuous rolling:
1. Continuous rolls: replace with new rolls during maintenance.
The 4th and 5th frames (4B, 5B) of the original continuous rolling were cold-rolled 1550 pieces, which were originally scheduled not to be replaced after maintenance. However, after installation, a red alarm occurs during the whole pressing process. After everything is normal, check the roll gap on the spot. It can be clearly seen that the roll gap between the fifth frame R3 and R1 and R2 is larger than the roll gap between R1 and R2. Press down the cylinder several times to return to zero for its effect. After the 4 and 5 frames were replaced and replaced with new rolls, the roll gap could not be seen abnormal after the hot-rolled strip was pressed into the work.
From 5B to the special tool, the zero sound card frame is adjusted, and there is no abnormality. The CHOCK value of each roller is increased by 0.05mm.
2. Offline machine:
During maintenance, replace the cylinder liner of the lower roller R1 of the third frame, and adjust it to zero. Disassemble and replace a new set of upgraded de-piping machines (1B, 2C, 3B), and measure the roll gap adjustment.
five. Reheating furnace:
Temperature control 960±10℃. Press the stepper motor beam before production and grind the bypass valve roller.
six. Zhang minus:
Mohamaura organization during maintenance.