Effect of solid solution on stainless steel pipe fitting and flange

Stainless steel pipe flange and fitting manufacturing companies should consider the cost of pipe fittings, but should also consider preventing corrosion and improving product quality.

Factors, therefore, the solid solution process is adopted in the stainless steel pipe flange manufacturing process to increase the safety of the fittings.

The machining process plays a vital role in the quality and safety of accessories. It is understood that there are several companies.

In this case, solution treatment is not applied, and only sandblasting and other methods are used to cover the defects and deficiencies of the fittings that the pipe fittings will provide.

The use will bring constant latent dangers.

Austenitic stainless steel is softened by heat treatment, heating stainless steel to approximately 950 ~ 1150 ° C, holding it for a certain time, so that carbon The compounds and various alloying elements dissolve uniformly in austenite, which is called leaching.

The role of heat treatment of stainless steel fittings:

After processing stainless steel fittings by molding, welding, and other processes, the molecular structure, magnetic, and physical properties of the metal have changed.

Thanks to the solid solution process to protect the atmosphere, the affected corrosion resistance can be restored after processing and the hardness required for stainless steel can be achieved.

Grade to provide the best stainless steel performance. Stainless steel fittings after processing the solution have a good enhancing effect:

1. Eliminate modification of stainless steel fittings during processing, reduce stainless steel hardness below 220HV and improve.

   
   

The ductility and strength of stainless steel make accessories more convenient and secure during installation.

2. Recover stress and intergranular changes in the stainless steel fittings manufacturing process, reduce intergranular corrosion and stress corrosion of stainless steel, and improve

Corrosion resistant.

3. Eliminate the magnetism generated by stainless steel during processing and stabilize the austenite structure.

4. Restore natural light on the surface of the stainless steel material (natural light is different from polished light).

Characterization of solid mortar stainless steel accessories

Stainless steel is a special type of steel due to the presence of alloying elements such as nickel and chrome.

Various specifications:

1. The thermal conductivity of stainless steel is low, and the thermal conductivity at normal temperature is only 27% of carbon steel, and with an increase in heating temperature,

The thermal conductivity of stainless steel is gradually reduced. Therefore, when stainless steel is heated to a low temperature, the heating process must be carried out slowly.

2. After heating the austenitic stainless steel to approximately 1100 ° C by treatment with a solution, it can inhibit the formation of carbides and then cool rapidly

At room temperature, the carbon may be supersaturated, which can significantly improve the corrosion resistance of stainless steel.

3. The pipe fittings are protected by gas (hydrogen) during the dissolution process to prevent the formation and reduction of viscous iron oxide on the surface of stainless steel.

The shine of the stainless steel surface enhances the reputation of appearance.

Solid solution of three elements of stainless steel pipe fittings:

The quality of a stainless steel pipe fitting solid solution has a great impact on corrosion resistance and stainless steel appearance brightness.

Work performance plays a decisive role. Therefore, heat treatment of stainless steel is very important in the manufacture of stainless steel pipe fittings

Status.

1. Temperature of casting. According to the characteristics of the chemical composition of stainless steel, the temperature of a stainless steel solution should be 950 to 1150 degrees Celsius.

2. 
   

A softening effect is obtained, and stainless steel hardness comes within 220HV. Meets the pipeline installation and compression quality requirements. When temperature is controlled

Unreasonable system, prone to various quality defects.

2. Casting time. During the heating process of austenitic stainless steel, the residual content of ferrite in the steel decreases with the heating time

Less.

Therefore, the solution treatment on stainless steel pipe fittings should be controlled to about 1050 ° C to achieve carbon saturation and improve corrosion resistance. And

The solution effect is achieved after rapid cooling in the air.