The operators are mainly plumbers and argon arc welders, with the cooperation of other types of work, and the argon arc welder shall have the certificate issued by relevant departments.Flux coated welding wire (self shielded welding wire) shall be used for backing TIG welding.Ovar,Clamping operation the jaw of the caliper must be placed perpendicular to the axis of the pipe and pipe fitting, and the convex ring of the pipe fitting needs to be put into the groove of the jaw for clamping. In order to prevent operation, the operator can only stand on the axis of the pipe, not on the left and right sides of the tong head.Application field: launch the market plan of stainless steel pipe in the target market of new products,Various welding methods of combined welding stainless steel welded pipe have their own advantages and disadvantages. Combined welding methods include argon arc welding plus plasma welding, high-frequency welding plus plasma weldingAssembly: the sealing ring shall be correctly installed in the U-groove of the pipe fitting put the pipe into the socket of the pipe fitting and wait for crimping.Flux coated welding wire (self shielded welding wire) shall be used for backing TIG welding.

The selection of pipes and fittings for welding data preparation shall be based on the quality elements of the application environment, chemical composition and application pressure, and the commodities of corresponding grades shall be selected to ensure the weld metal structure and machine function.There are about types of hot rolled (hot) stainless steel pipes with a diameter of -mm and types with a wall thickness of -mm. There are types of cold drawn (rolled) stainless steel pipes with a diameter of -mm and types with a wall thickness of .-mm.When hoisting stainless steel pipes, public slings, such as hoisting belt and public collet number, shall be used. It is strictly prohibited to use steel wire rope to avoid scratching the surface; and when hoisting and placing, it shall prevent scratching caused by impact and collision. If there are surface scratches electric arc traces and surface purification in the process of transportation,OvarRefractory stainless steel plate, storage and processing, it must be completely cleaned, polished with an angle grinder, and then polished Polishing with optical sheet or metallographic sandpaper.knowledge,For business people, of course, it is better to spend less under feasible conditions. For goods such as stainless steel pipes, we can often see that there will be packaging film bags on them. Although they are not heavy,Ovar201 stainless steel embossed plate, if there are a large number of single purchases, they will also produce certain economic expenses, but why do many people clearly dislike this thing on stainless steel pipes, But I have to accept it. Next, xincoral Xiaobian will tell you why stainless steel pipes need packaging bags.During welding, the process of ventilation in advance and gas stop behind shall be adopted and the adhesive cloth on the outside shall be torn off while welding. Because the blocking plate is composed of rubber and white iron sheet, it is not easy to be damaged, so this welding can well ensure that the inner side of the weld is filled with argon and its purity, so as to effectively ensure that the metal on the inner side of the weld is not oxidized and ensure the quality of weld backing welding.All steel with openings at both ends and hollow sections, and with a large ratio of length to section perimeter, can be called steel pipe. When the ratio of length to section perimeter is small, which belong to the category of pipe products.

Shape, stress, temperature and metal flow of forgings and dies. Results the multi-step upsetting extrusion process under high temperature can make the end of steel pipe meet the forming requirements. Conclusion the plastic forming process of steel pipe end is feasible, which has important reference significance for the improvement of pipe connection mode of railway freight car braking system.install,After fine tuning the molten steel temperature in the argon blowing station, it is lifted to the ladle rotary table for continuous casting.The existence of medium temperature brittle zone requires strict heat treatment and welding process system to avoid the appearance of harmful phase and damage the performance.Solution treatment. The main purpose of water quenching after heating the steel to ~ ℃ is to dissolve the carbide in austenite and keep this state to room temperature, in order to prevent intergranular corrosion, solid solution treatment is usually used to dissolve CrC in austenite and then cool rapidly. Air cooling can be adopted for parts, and water cooling is generally adopted.Ovar,Hardness test: annealed stainless steel pipes with inner diameter of more than mm and wall thickness of less than mm can be tested by w-b Vickers hardness tester, which is very fast and simple, and is suitable for rapid and nondestructive qualification test of stainless steel pipes. For stainless steel pipes with inner diameter of more than mm and wall thickness of more than mm, Rockwell hardness tester shall be used to test HRC hardness. Stainless steel pipes For stainless steel pipes with inner diameter greater than mm and wall thickness less than mm, the surface Rockwell hardness tester shall be used to test HRT or hrn hardness. For stainless steel pipes with inner diameter less than mm and greater than mm, the special Rockwell hardness tester for pipes shall be used to test hrt hardness. When the inner diameter of stainless steel pipes is greater than mm,OvarStainless steel plate Black Titanium, the Rockwell or surface Rockwell hardness tester can also be used to test the hardness of pipes.Model & mdash; The corrosion resistance is the same, and the strength is better because the carbon content is relatively high.Editor's note on the causes of steel rusting: chloride ions exist widely, such as salt, sweat stains, sea breeze, soil, etc. stainless steel corrodes rapidly in the presence of chloride ions, even surpassing ordinary low-carbon steel. Chloride ions form complexes with Fe in alloy elements reducing the positive potential of Fe, and then being stripped of electrons and oxidized [].