from the current situation of China's stainless steel foreign trade China's stainless steel export has encountered great resistance.
(soft, 1 / 23 / 4h) and other primary and secondary stainless steel coils.
.At present, stainless steel backing is divided into two processes: back argon filling and non argon filling. Back argon filling protection can be divided into solid wire + TIG process and solid wire + TIG + water-soluble paper process; The back non argon filling protection is also divided into flux cored wire backing welding and welding rod (flux coated wire) backing TIG welding.
Steel strip, thin strip, roll strip, calendering strip and other strips can be cut with a thickness of 0.03 to 0mm (Note: stainless steel calendering strips of various thickness and width can be produced according to the needs of customers)
.Stainless steel with domestic (imported) stainless steel belt: stainless steel coil belt stainless steel spring belt, stainless steel stamping belt, stainless steel precision belt, stainless steel mirror belt, stainless steel
There are 45 kinds of hot rolled (hot) steel pipes with a diameter of 54 ~ 480mm, 36 kinds of wall thickness of 5 ~ 45mm, 65 kinds of cold drawn (rolled) steel pipes with a diameter of 6 ~ 200mm and 39 kinds of wall thickness of 0.5 ~ 21mm.
Before connecting the pipe fittings, mark the depth on the pipe first, it can reach a higher welding speed for steel pipes with different materials, outer diameter and wall thickness. Compared with argon arc welding, it is more than ten times its high welding speed. Therefore, stainless steel pipes for common use have a higher consumption rate. Due to the high speed of high frequency welding, it is difficult to remove burrs in welded pipes. At present high frequency welding Welded stainless steel pipe can not be borne by chemical and nuclear industries, which is also one of the reasons.
Hot rolled belt, stainless steel etching belt, stainless steel stretching belt, stainless steel polishing belt, stainless steel soft belt, stainless steel hard belt, stainless steel medium hard belt, stainless steel high temperature resistant belt, etc.
Excellent quality.7. Distinguish between 316L and 304L. There are two kinds of commonly used stainless steel 30316l (or corresponding to the German / European standard 430844036l, the main difference in chemical composition between 316L and 304 is that 316L contains Mo, and it is generally recognized that 316 has better corrosion resistance than 304 in high temperature environment. Therefore, engineers generally choose 316L parts in high temperature environment. However, there is no absolute thing. In concentrated environment, 316L should not be used at any higher temperature! No However, this is a big problem. People who study mechanics have all studied threads. Remember a black solid agent that needs to be applied to prevent threads from biting under high temperature: molybdenum disulfide (MOS), from which two conclusions are drawn: No: [1] Mo is indeed a high resistance material (know what crucible gold is melted in? Molybdenum crucible!). [2] : molybdenum can easily react with high valence sulfur ions to form sulfide. Therefore, no stainless steel is super corrosion resistant. In the final analysis, stainless steel is a steel with more impurities (but these impurities are more corrosion resistant than steel). If it is steel, it can react with other substances.
400 series & mdash; Ferritic and martensitic stainless steel.
Hot rolled stainless steel tubes are generally produced on automatic tube rolling mills. After inspection and removal of surface defects, the solid pipe blank is cut into the required length, centered on the end face of the perforated end of the pipe blank, and then sent to the heating furnace for heating and perforated on the piercer. During perforation, it rotates and advances continuously. Under the action of roll and plug, a cavity is gradually formed inside the pipe blank, which is called rough pipe. Then it is sent to the automatic pipe mill to continue rolling. After that, the wall thickness of the whole machine is adjusted, and the diameter is determined by the sizing machine to meet the specification requirements. It is advanced to produce hot rolled seamless steel pipe by continuous pipe mill.
The cold rolled steel strip has good strength and yield ratio, and the hot rolled steel strip has good ductility and toughness.
Create brilliance.Cutting tool level & rdquo; Martensitic steel, an early stainless steel similar to Brinell high chromium steel. It is also used for surgical tools, which can be made very bright.
Stainless steel pipes can be divided into CR series (400 Series) Cr Ni series (300 Series), boiling steel: killed steel: class a steel: T8: Special: ball joint steel and spring steel, such as 20CrMnTi 60simn, (C content is expressed in tens of thousands)
.The effect of different stabilizers on the stability of ferritic stainless steel during pickling in base solution was studied by means of weight loss curve and scanning electron microscope. The results show that under the experimental conditions, both complex stabilizer HF and adsorption complex stabilizer 5-sulfosalicylic acid can completely remove the oxide layer on the surface of stainless steel The effect of adsorbing complex stabilizer 5-sulfosalicylic acid is obviously better than that of complex stabilizer HF in the stability effect and the flatness of the research results on the properties and microstructure of stainless steel surface s stainless steel pipe after pickling. The deformation behavior at high temperature at 100 ℃ and strain rate of 0.01 ~ 5 s-1. The rheological stress curve is drawn according to the compression experimental data; based on Arrhenius relationship and considering the strain Factor, an improved constitutive equation coupled with strain factor is established; combined with optical microscope (OM) The characteristics of microstructure during material deformation are observed; the dynamic recrystallization critical strain of L stainless steel is determined according to the work hardening rate flow stress curve, and the dynamic recrystallization volume fraction model is established based on the s stainless steel pipe equation. The results show that in the process of thermal deformation of s stainless steel pipe, the flow stress corresponding to lower temperature and faster strain rate is also large; the coupling of stress variable factors The correlation coefficient between the rheological stress of the constitutive model s stainless steel tube and the experimental value is 0.986 88, and the average relative error is only 6%. The model can better predict the deformation resistance of L stainless steel during thermal deformation. The dynamic recrystallization behavior of s stainless steel tube is easy to occur under the processing conditions of high temperature and low speed, and its dynamic recrystallization volume fraction and strain change in S shape. The value obtained by the model is consistent with the experimental data The volume fraction of dynamic recrystallization of s stainless steel tube during hot working can be well. Dense palladium membrane was prepared on porous stainless steel substrate with pore size of 5 & mu; m by electroplating and the combination of the two. The palladium membrane on the surface of porous stainless steel was characterized by seeds and XRD. The results show that the pretreatment is completed with 0.1 GL PdCl2 solution A pure palladium film can be prepared by electroless plating of porous stainless steel and electroplating with palladium ammonia solution with palladium content of 17 GL,
Selection process of stainless steel pipe water supply pipe.
7. Distinguish between 316L and 304L. There are two kinds of commonly used stainless steel 30316l (or corresponding to the German / European standard 430844036l, the main difference in chemical composition between 316L and 304 is that 316L contains Mo, and it is generally recognized that 316 has better corrosion resistance than 304 in high temperature environment. Therefore, engineers generally choose 316L parts in high temperature environment. However, there is no absolute thing. In concentrated environment, 316L should not be used at any higher temperature! No However, this is a big problem. People who study mechanics have all studied threads. Remember a black solid agent that needs to be applied to prevent threads from biting under high temperature: molybdenum disulfide (MOS), from which two conclusions are drawn: No: [1] Mo is indeed a high resistance material (know what crucible gold is melted in? Molybdenum crucible!). [2] : molybdenum can easily react with high valence sulfur ions to form sulfide. Therefore, no stainless steel is super corrosion resistant. In the final analysis, stainless steel is a steel with more impurities (but these impurities are more corrosion resistant than steel). If it is steel, it can react with other substances.