What is the correct use of stainless steel 304 flange type metal corrugated compensator?
Make stainless steel 304 flange type metal corrugated compensator arrangement and composition uniform common, which is particularly important for the material, because the hot-rolled wire sections of the rolling temperature and cooling rate is not the same, forming the arrangement structure is not common. Stainless steel 304 flange type metal corrugated compensator softened by solution treatment, generally stainless steel 304 flange type metal corrugated compensator heated to about 950 ~ 1150 ℃, holding a period of time, so that carbide and a variety of alloying elements fully and uniformly dissolved in austenite, and then quickly quenched water cooling, carbon and other alloying elements can not be divided, to obtain pure austenite arrangement, called solution treatment .
After solid solution treatment, the distorted lattice recovery, elongation and broken grains from scratch crystallization, internal stress elimination, stainless steel 304 flange type metal corrugated compensator tensile strength decreases, elongation rises. On the stainless steel 304 flange type metal corrugated compensator, solid solution treatment of the 3 elements are temperature, holding time and cooling rate. The solid solution temperature is determined primarily based on the chemical composition. Generally speaking, the variety of alloying elements, high content of the trademark, solid solution temperature to progress accordingly. In particular, manganese, molybdenum, nickel, silicon content of high steel, as long as the progress of solid solution temperature, so that it is fully dissolved, in order to reach the softening effect. 304 stainless steel has outstanding cold and hot processing function, can use a variety of common cold and hot processing process to produce stainless steel 304 flange type metal corrugated compensator, hot processing temperature scale of 900-1180 ℃.
Cold processing is easier, no special difficulties, because the two kinds of steel is easy to cold hardening, when the cold deformation is too large, shall be center annealing treatment, in order to facilitate further processing. Stainless steel 304 flange type metal corrugated compensator solid solution treatment temperature of 1080-1100 ℃, cooling method for water cooling or air cooling. Cold processing center annealing temperature of more than 850-970 ℃, holding a certain moment after water cooling. After solid solution treatment of steel arrangements for austenite arrangements, sometimes there are a few ferrite.
Stainless steel 304 flange type metal corrugated compensator to press down the carbide separation when welding, can use the general approach to welding. Craft arc welding, containing 0.04%-0.06% of carbon in the thin cross-sectional scale of 304 stainless steel can be selected Ao 002 welding rod, welding may not occur after the intergranular corrosion tendency, on the thick cross-sectional feet, to adhere to the welded intergranular corrosion resistance function, the need for post-welding heat treatment, if not heat treatment, should be changed to 304L stainless steel or stable austenitic stainless steel. 304 stainless steel sheet in the process of use, often Used for cold forming operation.
Its cold forming function is an important technical goal to measure whether the smooth forming and finished rate of concave and convex. Affect the stainless steel 304 flange type metal corrugated compensator cold forming elements are more, but also very messy. In terms of its metallic elements is mainly the composition of steel, namely, the ratio of chromium equivalent and nickel equivalent, its customary tensile function of elongation is an important characterization goal. In order to obtain outstanding cold forming function, the ratio of chromium equivalent to nickel equivalent in steel should be manipulated to be in an appropriate scale.
