Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

The function of heat treatment is to improve the material mechanical properties of steel pipe, eliminate residual stress and improve its cutting performance.According to different purposes of heat treatment, heat treatment process can be divided into two categ......

Skates are required in figure skating, synchronized skating, speed skating and short track events stipulated by the International Skating Union (ISU) and ice hockey events of the International Ice Hockey Federation (IIHF). What kind of steel is used for ice sk......

Superalloy (also known as heat-resistant alloy) is a metal material with long-time creep resistance, high endurance strength and high corrosion resistance under the simultaneous action of stress and high temperature (above 600 ℃). With excellent oxidation res......

Tension is a simple mechanical property test. Within the test gauge, the stress is uniform, the measurement of stress-strain and its performance indexes is stable, reliable and convenient for theoretical calculation. Through the tensile test, the most basic me......

Stainless steel can be divided into four categories according to its steel structure, namely austenitic stainless steel, ferritic stainless steel, martensitic stainless steel and AUSTENITIC FERRITIC duplex stainless steel. The following mainly analyzes the wel......

Weldability of metal materials refers to the ability of metal materials to obtain excellent welded joints under certain welding processes, including welding methods, welding materials, welding specifications and welding structure forms. If a metal can use more......

Last week, Jiaxing MT Stainless Steel held the annual year-end summary meeting. 2021 was an extraordinary year for international trade and steel industry. The global epidemic has not been alleviated, and China shoulders most of the production responsibility......

The machinability of metal materials usually refers to a kind of performance or quality that can be clearly defined and measured as a sign of its machinability. Generally speaking, good machinability should be: good tool durability or high cutting speed under ......

Different kinds of projectiles:1. The hardness of cast steel shot is generally 40 ~ 50HRC. When processing hard metal, the hardness can be increased to 57 ~ 62Hrc. Cast steel shot has good toughness and is widely used. Its service life is several times that of......

1. Impregnation method:stainless steel pipeline, elbow and small parts are most suitable for this method, and the treatment effect is the best. Because the treated parts can be fully immersed in pickling and passivation solution, the surface reaction is compl......

The corrosion resistance of stainless steel is mainly due to the addition of a high content of Cr element in the steel. Cr element is easy to oxidize and can quickly form a dense Cr2O3 oxide film on the surface of the steel. The corrosion resistance of stainle......

In the actual operation of flange joint, bolt force relaxation is inevitable, and the bolt force of initial tightening will always drop with time. Especially for flange joints under high temperature and severe cycle conditions, after 10000 hours of operation, ......

Carbon steel is divided into:①Mild steel with carbon content less than 0.25%;② Medium carbon steel with carbon content of 0.25% ~ 0.6%;③ High carbon steel with carbon content greater than 0.6%.Mild steel is a carbon steel with carbon content less than 0.25%......

P is brought into steel by ore. generally speaking, phosphorus is also a harmful element. Although phosphorus can increase the strength and hardness of steel, it can significantly reduce the plasticity and impact toughness. Especially at low temperature, it ma......

C is the main element second only to iron, which directly affects the strength, plasticity, toughness and weldability of steel.When the carbon content in steel is below 0.8%, the strength and hardness of steel increase, while the plasticity and toughness decre......

Low finned tube high efficiency heat exchangerThe low finned tube of the low finned tube heat exchanger is a special tube whose outer surface is rolled into threaded fins. The low finned tube not only increases the heat exchange area, but also divides the flui......

Bellows high efficiency heat exchangerThe heat exchange tube of corrugated tube high-efficiency heat exchanger is a corrugated special tube inside and outside the tube. The convex corrugated surface inside and outside the bellows makes the fluid in the boundar......

Wound tube high efficiency heat exchangerWound tube heat exchanger is a new type of high efficiency heat exchanger with compact structure and high heat transfer efficiency. The heat exchange tubes are alternately wound between the core cylinder and the outer c......

Is there such a strange building around you: it is a solid steel structure, but its whole body is covered with thick red and black rust. That's weathering steel.Weathering steel, also known as atmospheric corrosion-resistant steel, is a low-alloy steel between......

Gasket is an important component of flange sealThe gasket is used to seal the gap between the two French sealing surfaces and prevent fluid leakage.Suitable flange gasket material requires that the gasket can produce necessary elastic deformation without being......

Bolt preloadThe preload must compress the gasket to achieve the initial seal. Properly increasing the bolt preload can increase the sealing capacity of the gasket, because increasing the preload can keep a large contact surface specific pressure of the gasket ......

Stainless steel heat exchange tube is a device made of stainless steel. It is one of the components of heat exchanger. It is placed in the cylinder for heat exchange between two media.Stainless steel heat exchange tube have the following advantages:1. Stainles......

The contact surface with gasket placed between flanges and compressed to play a sealing role is called flange sealing surface or compression surface. The selection of sealing surface type is related to operating conditions, consequences of leakage and the natu......

Heat exchanger is widely used in chemical industry, petroleum industry, electric power industry, food industry and many other industries. It accounts for about 40% of the equipment investment in petrochemical plants. It is a key chemical equipment. At the same......