The protection mechanism of stainless steel backing wire + TIG process is that the back weld is protected by the metallurgical reaction of slag produced by welding wire melting and its alloy elements, and the front weld is protected by argon, slag and alloy elements.When using this process, the following key points should be paid attention to: during the welding process, welding wire and weldment should be maintained. The ideal caster angle of the welding handle nozzle is & deg; & mdash; & deg;, and the included angle between the welding wire and the weldment surface is & deg; & mdash; & deg;; correct the molten pool temperature, change the included angle between the welding handle and weldment, change the welding speed, etc. to change the molten pool temperature, so as to ensure Beautiful weld formation (uniform width, no concave, convex and other defects) During operation, the current shall be slightly larger than that of solid core welding wire, and the welding handle shall be slightly adjusted to accelerate the separation of molten iron and molten flux coating, so as to facilitate the observation of molten pool and penetration; when filling the welding wire it shall be sent to places of molten pool and pressed inward slightly to ensure penetration and prevent concave; during welding, the welding wire shall be regularly sent and taken out, and the welding wire shall always be ensured Under the protection of argon to prevent the end of the welding wire from being oxidized and affect the welding quality; pay attention to the welding quality of the arc and arc stop, and the spot weld shall be polished to & deg; the slope shall be gentle, and pay attention to the defects such as arc pit and shrinkage hole during arc stop.Harelbeke,In view of the continuous vibration of stainless steel pipe shopping malls, even & ldquo; Roller coaster & rdquo; Market, stainless steel pipe market participants are implementing it carefully & ldquo; Fast forward and fast Exit & rdquo; Therefore, the national stainless steel pipeline inventory has been at a low level. High price various specifications of stainless steel plate, stainless steel coil,HarelbekeStainless steel square tube, stainless steel belt and stainless steel pipe. Waste merchants, industrial companies, enterprises and power departments are welcome to visit and negotiate with the company! At the beginning the social inventory of stainless steel pipes should progress with the progress of economic aggregate, and with the progress of total output and demand. However, stainless steel pipe inventory did not increase too much, indicating a relative decline in social inventory level. Low inventory has indeed played a role in market stability.Model & mdash; Add a small amount of sulfur and phosphorus to make it easier to cut.Lower Hart,Chloride ions exist in the service environment. Chloride ions exist widely, such as salt, sweat, sea breeze, soil, floating rust of iron foam and so on. Stainless steel corrodes rapidly in the presence of chloride ions, even more than ordinary low carbon steel. Therefore, there are requirements for the service environment of stainless steel, and it is necessary to remove dust frequently and keep it clean and dry. (in this way, we can give him a & ldquo; improper use & rdquo;) there is an example in the United States: an enterprise uses an oak container to contain a solution containing chloride ions. The container has been used for nearly years. The ninetieth generation of the last century plans to replace it. Because the oak material is not modern enough, the container leaks due to corrosion days after it is replaced with stainless steel.Application field: launch the market plan of stainless steel pipe in the target market of new products, such as stainless steel kitchen equipment.There are various connection modes of stainless steel pipes. The common types of pipe fittings are compression type, compression type, union type, push type, push thread type, socket welding type, union flange connection,HarelbekeStainless steel strip 316L, welding type and derivative series connection mode combining welding with traditional connection. These connection modes have different application ranges according to their principles, but most of them are easy to install firm and reliable. The sealing ring or gasket materials used for connection are mostly silicone rubber, nitrile rubber and EPDM that meet the requirements of national standards. L stainless steel pipe, s stainless steel pipe, L stainless steel pipe and other brand products are provided for a long time. The designated products are complete and the quality is guaranteed, which eliminates the need for use

The numbering rules adopt element symbols; Pinyin, open hearth steel: p; Boiling steel: F; Killed steel: B; Class a steel: a; T: special GCr: ball.L stainless steel pipe is also called CrNiMo stainless steel pipe. CrNiMo is an ultra-low carbon steel of CrNiMo. CrNiMo has better intergranular corrosion resistance than crnimo. It is usually used to manufacture industrial equipment such as chemical industry, chemical fertilizer and chemical fiber, such as containers, pipelines and structural parts.Therefore, the field with high utilization rate of stainless steel with high competitiveness and comprehensive quality will also be an important part of the plan.Manufacturing cost,Some reasons for product composition ratio: in order to reduce the production cost, reduce the proportion content of some important elements such as chromium and nickel,HarelbekeStainless steel pipe 201, and increase the content of other elements such as carbon. This production phenomenon that the composition ratio is not strictly in accordance with the product model and product characteristics not only greatly reduces the product quality, for example, when the chromium content of stainless steel pipe is insufficient, it not only affects the production The corrosion resistance and formability of products have potential product quality and safety hazards when they are used in chemical, equipment and production industries. At the same time, they also affect the appearance and oxidation resistance of 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.Since the beginning of last year, foreign countries have frequently carried out & ldquo; Double inverse & rdquo; This has a great impact on China's stainless steel casting industry. Export is a large part of the development of China's stainless steel industry and occupies a huge market share in its industrial development. In the face of economic downturn and slow development, the development of China's stainless steel industry should constantly improve product quality Better develop overseas trade and deal with trade protectionism, combine products with environmental protection, energy resources and cultural environment, and improve the competitiveness of stainless steel products. Only in this way can we achieve an invincible position in foreign trade.

After fine tuning the molten steel temperature in the argon blowing station, it is lifted to the ladle rotary table for continuous casting.Welcome calls ,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, 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.Stainless steel pipe will rust? It will rust. The stainless steel pipe only means that it is not easy to rust, which does not mean that it will not rust. If it is placed in seawater, except in places with acid rain. Stainless steel pipe itself will not rust it will produce spot rust. It will not rust under normal circumstances, but. Domestic wce cerium tungsten electrode is used for electrode data. The shape and diameter of the end of cerium tungsten electrode have a great impact on the fluctuation of welding process and weld formation.Harelbeke,Stainless steel pipes and water transmission equipment for fluid transportation such as water and gas are advanced basic water purification materials in the world. They have strong anti-corrosion performance, which can not be compared with cast iron pipes, carbon steel pipes and plastic pipes.Austenitic stainless steel can be used to manufacture stainless spring, clock spring and steel wire rope in aviation structure after deformation strengthening. If welding is required after deformation, spot welding process and deformation can only be used to increase the tendency of stress corrosionStainless steel export is an important part of China's export economy. It plays an important role in stimulating China's economic growth. However, China's stainless steel export has encountered great resistance.