What is Q235?

What is Q235? Q235 steel is a kind of carbon structural steel. It is equivalent to A3 and C3 steel in the old standard gb700-79, and the Russian toct brand is used. Q in the steel grade represents the yield ...

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Research Progress on stress corrosion crack propagation behavior of cold worked nuclear power structural materials in high temperature and high pressure water

Research Progress on stress corrosion crack propagation behavior of cold worked nuclear power structural materials in high temperature and high pressure water

In the early nuclear power plants, the pipes were mainly made of 304SS and 316SS austenitic stainless steel, and stress corrosion cracking (SCC) often occurred in the cold working area of steel pipes. Transgranular stress corrosion (TGSCC) of welded core shroud ...

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Research status and development of high temperature and high pressure water notch fatigue properties of nuclear power materials

Research status and development of high temperature and high pressure water notch fatigue properties of nuclear power materials

Corrosion fatigue is one of the potential failure modes of nuclear power materials in service. The results show that the fatigue life of materials in high temperature and high pressure water environment is significantly decreased in light water reactor (LWR). ...

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How to choose valve material under high temperature condition?

How to choose valve material under high temperature condition?

The high temperature valve has good quenching property and can be deeply quenched instead of the surface quenching of anti saw lock on the market. In general information, the valve with working temperature T > 450 ℃ is called high ...

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India’s Antidumping on stainless steel plate imported from Indonesia / nickel mine production in Philippines dropped sharply year on year / automobile sales increased by 16.4% in July / medium plate rolling breakthrough of Jiuquan Steel Co., Ltd. / import ban change of Vietnam 201

India’s preliminary ruling: it is necessary to levy temporary countervailing duty for the subsidy of stainless steel flat products from Indonesia On August 7, 2020, the trade remedy administration of the Ministry of Commerce and industry of India announced the ...

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Basic knowledge of stainless steel

Basic knowledge of stainless steel

Basic knowledge of stainless steel Stainless steel In layman’s terms, stainless steel is steel that is not easy to rust. In fact, some stainless steels have both rust resistance and acid resistance (corrosion resistance). The rust resistance and corrosion resistance ...

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Heat treatment: quenching medium

Heat treatment: quenching medium

What is quenching medium? The medium used for quenching and cooling the workpiece is called quenching cooling medium (or quenching medium). The ideal quenching medium should have the condition that the workpiece can be quenched into martensite without causing too ...

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The role of titanium in steel

The role of titanium in steel

Effect of titanium on Microstructure and heat treatment of steel ① Titanium has strong affinity with nitrogen, oxygen and carbon. It is a good deoxidizer and an effective element for fixing nitrogen and carbon. ② Titanium and carbon compounds (TIC) ...

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Heat treatment of steel: optimization of heat treatment process of gearbox gear

Heat treatment of steel: optimization of heat treatment process of gearbox gear

Strength design and heat treatment of gear The contact fatigue strength, bending fatigue strength, core toughness, surface hardness and wear resistance of the gear are the key indexes of the hot gear, which are directly related to the service life ...

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Sealing principle and characteristics of flat welding flange

Sealing principle and characteristics of flat welding flange

What is a flat welding flange? A flat welded flange is a type of flange that is joined to a vessel or pipe by a fillet weld. It is an arbitrary type of flange. According to the degree of integrity of the connection between ...

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