(1) Raw materials are strip coils, welding wire, flux. Strict physical and chemical testing is required before input.
(2) The steel head and tail are butt jointed, and the single wire or double wire submerged arc welding is used, and the automatic submerged arc welding is used after the steel pipe is rolled.
(3) Before forming, the strip is leveled, trimmed, planed, surface cleaned and pre-bent.
(4) The electric contact pressure gauge is used to control the pressure of the cylinder on both sides of the conveyor to ensure the smooth conveying of the strip.
(5) Adopt external control or internal control roll molding.
(6) The weld gap control device is used to ensure that the weld gap meets the welding requirements, and the pipe diameter, the amount of misalignment and the weld gap are strictly controlled.
(7) Both internal welding and external welding are performed by single-wire or double-wire submerged arc welding by American Lincoln welding machine to obtain stable welding specifications.
(8) The welded seams are all inspected by online continuous ultrasonic automatic injury inspection to ensure the non-destructive testing coverage of 100% spiral welds. If there is a defect, the alarm is automatically alarmed and sprayed, and the production worker adjusts the process parameters at any time to eliminate defects in time.
(9) The steel pipe is cut into individual pieces by an air plasma cutting machine.
(10) After cutting into a single steel pipe, the first three inspections of each batch of steel pipe shall be subjected to a strict first inspection system to check the mechanical properties, chemical composition, fusion condition, surface quality of the steel pipe and non-destructive testing to ensure the pipe making process. Once qualified, it can be officially put into production.
(11) The part of the weld with continuous acoustic flaw detection mark, after manual ultrasonic and X-ray review, if it is defective, after repair, it will pass the non-destructive test again until it is confirmed that the defect has been eliminated.
(12) The tube of the butt weld of the strip and the joint of the butt joint intersecting the spiral weld are all inspected by X-ray television or film.
(13) Each steel pipe is subjected to hydrostatic pressure test and the pressure is radially sealed. The test pressure and time are strictly controlled by the steel pipe water pressure microcomputer detection device. The test parameters are automatically printed and recorded.
(14) Pipe end machining, so that the verticality of the end face, the groove angle and the blunt edge are accurately controlled.
Aluminium Profile For Cabinet Frame
What are the advantages of Xin-alu aluminum profile for cabinet Frame
1. Waterproof
The aluminum profile of the cabinet door is made of aluminum alloy frame inlaid with crystal steel plate. The aluminum alloy profile, ABS plastic parts and crystal steel plate are bubble resistant materials. Therefore, the aluminum profile of the cabinet door provides 50 years of waterproof guarantee, which can be directly washed and soaked with water.
2. Fire prevention
The aluminum profile of cabinet door has strong heat resistance. The test shows that it can withstand the temperature difference of 200 ℃ without damage. Even if the whole piece is placed on it after being ignited, its surface will not be damaged after burning for a long time, which overcomes the disadvantage that ordinary plates can not stand burning.
3. Insect and ant prevention
The aluminum profile of the cabinet door is extremely hard, and even termites have nothing to do.
4. Impact resistance
The aluminum profile of cabinet door has strong impact resistance. The experiment shows that it can withstand the test of 227g steel ball falling from 3m without damage, and the bending strength is 150MPa.
5. Wear resistance
The surface of aluminum profile of cabinet door is not damaged by knife cutting. It can be used under normal conditions for 50 years.
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GuangDong XinCheng Material CO.,LTD , https://www.xin-alu.com