As we all know, the hydrogen in the material will be trapped at various trap positions (dislocations, grain boundaries, precipitates and inclusions, etc.). The ...

Energy-saving and efficiency-enhancing is an important topic in the field of gear heat treatment. It is explained with specific cases that process optimization ...

In continuous casting production, network cracks sometimes appear on the surface of round billets. The cracks are small and difficult to find when finishing ...

Modern large-scale cold strip rolling mills have realized headless and semi-endless rolling. The requirements for the quality of the strips, such as the ...

This article introduces common valve steel casting defects and repair welding methods. Scientific repair welding of steel casting defects is an energy-saving ...

There are many types of die steel, and different die steels have different uses and methods of use. The specific knowledge is introduced below for you:

Ultra-low carbon martensitic stainless steel (06Cr13Ni46Mo and 06Cr16Ni46Mo) is an important material usually used for the upper crown, lower ring, blades and ...

Nowadays, the profit of the foundry industry is getting lower and lower. In order to ensure the quality of castings, the caster must consider reducing the ...

With the vigorous development of international aviation subcontracting products, the cooperation between customers has also become closer. The difficulty of ...

Chromite sand belongs to the category of special sand in modeling materials. Its main mineral composition is FeO.Cr2O3, density is 4.0～4.8g/cm3, Mohs hardness ...

Cast steel, cast iron, alloy steel can be slowly heated to about 300~500ºC with a quenching nozzle with a small flame to prevent cracking.

There are many types of large ductile iron parts, such as: large diesel engine block, large wheel hub, large ball mill end cover, blast furnace cooling stave, ...

Through the research on the casting process and material of the rolling plate of the medium and heavy plate cooling bed, a new method of making roulette iron ...

Early cracking is generally due to the high forging temperature of the blank forging (commonly known as overburning). Overburning is an irremediable defect, so ...

Steel grades with a carbon mass fraction of 0.09% to 0.16% are called sub-peritectic steels. In the continuous casting process, molten steel undergoes a series ...

The effect of nitrogen content on the mechanical properties of 500MPa grade VN microalloyed high-strength steel bars was studied through production tests. The ...

Through experiments, it is found that carbon content at the bottom of the electroslag ingot will increase when the carbon content in the purified slag is ...

Scrap steel is a general term for ferrous metal scrap in scrap metal recycling. It includes several categories such as scrap steel, scrap iron, slag steel, and ...

Automobiles use high-strength steel, which can reduce the thickness of the plate due to its higher strength, making the automobile structure lighter. At the ...

Improving the cleanliness of the cast slab is the basis for the production of high-quality steel, and the total oxygen content of the cast slab is an important ...

Since 1971, DBSpencer and MCFlemings of the Massachusetts Institute of Technology in the United States invented a new process of stirring casting (stir cast), ...

Absolute humidity: the weight of water vapor per unit volume of air (g/m3)Relative humidity: The ratio of the water vapor content in the air to the saturated ...

In the steelmaking process, after the converter smelting is completed, the molten steel is poured into the ladle through the converter tap;

High-nitrogen stainless steel refers to a steel with a ferrite matrix with a nitrogen content of more than 0.08% (mass fraction, the same below) or an ...

The biggest advantage of precision casting is that because investment castings have high dimensional accuracy and surface finish, it can reduce machining work, ...

Casting coatings are applied to most of the casting production process and play an important role in the surface quality of castings. There are many foundry ...

When the foundation of earthquake zone and tundra zone changes, pipelines laid in the zone may buckle and break. Therefore, improving the buckling resistance ...

It is assumed that the raw material sintering plant has 8 belt sintering machines (1×174 m2, 1×150 m2, 5×360 m2, 1×400 m2), with an annual output of 21.98 ...

Different types of steel used as plastic molds have different chemical compositions and mechanical properties, so the manufacturing process routes are ...

The production process of the galvanizing line is: chilled coil → degreasing → continuous annealing → galvanizing → smoothing → drawing straightening → roller ...