Attention to precipitation or aging hardening of stainless steel plates

Several methods can be used to increase the strength of stainless steel plates, which are alloying, quenching, working hardening, and a very common form of heat treatment, namely, precipitation or aging hardening. The so-called age hardening is in fact dependent on the formation of precipitates. In order to achieve the best combination of mechanical properties, the […]

Why 904L austenitic stainless steel is difficult to be processed

The grade of 904L stainless steel is 00Cr20Ni25M04.5Cu, which belongs to a high austenitic stainless steel with high carbon content and low carbon content. It has strong corrosion resistance in the dilute sulfuric acid environment, because the addition of copper makes it have strong acid resistance. It is designed for the harsh environment of corrosion. Therefore, this […]

What is the reaction of stainless steel plates and hydrogen

Hydrogen corrosion may occur in ammonia synthesis, hydrogen desulfurization and hydrogenation and petroleum refining units. Carbon steel is not suitable for high pressure hydrogen installations at temperatures above 232 C. Hydrogen can spread into the stainless steel plate and form methane at the grain boundary or in the pearlite zone with the iron carbide. Methane can not […]

Several processes of pickling and passivation on the surface of stainless steel plate

When the surface of the stainless steel plate is not annealed (for example, the surface after welding), drilling mud residue, rust-proof film, or ferrite impregnated with stainless steel after the molding process, the corrosion resistance of the stainless steel material will be directly affected. At this point you need to use acidic oil cleaning agent to do […]

What harm does salt spray corrosion cause to passivation film on the surface of stainless steel plate?

Salt spray corrosion will destroy the passivation film on the surface of the stainless steel plate, so that the decorative nature of the plate will be lost, and the mechanical strength of the material will be reduced. Some electronic components and electrical wiring will cause the power line to be interrupted due to corrosion, especially in […]

What are the factors that affect the quality of bright annealing of stainless steel pipes?

After annealing the stainless steel pipe, the brightness of the pipe determines the quality of the product. There are many influencing factors. This paper gives the following 5 relatively important factors. The first is whether the annealing temperature is up to the specified temperature. The heat treatment of stainless steel pipes is usually treated by solid […]

Several defects and solutions occurred during the welding of stainless steel plate

When stainless steel plates are welded, defects often occur. The causes of these defects are different. This article describes some of the defect classification and avoidance methods. Stoma The pores formed by the stainless steel plate weld can be divided into internal pores, surface pores, and joint pores. There are two types of internal pores, one is […]

What are the performance of poor quality stainless steel pipe?

The seamless stainless steel pipe is a long steel bar with a hollow section and seamless joints. The thicker the wall thickness of a stainless steel pipe is, the higher its economical efficiency and practicality, and the thinner the wall thickness, the greater the production and processing costs. The process of the seamless stainless steel tube determines […]

Next Page »