Measures to eliminate(A) to reduce the number of ingress of hydrogen gas in the metal to reduce the high strength/high strength steel based on fermented pickles because they can cause catastrophic hydrogen embrittlement in stainless steel oxide and try how to spray the sand if removal from strength equal to or greater than 32 HRC band for Vietnamese Dong you want, sure.Chawa fermentation process in developing a piece of time to soak in acid. The length of no more than 10 minutes, and should attempt to reduce the concentration of the acid and to ensure that it is part of the acid soak time not exceeding 10 minutes in a degreasing cleaner or solvent degreasing and chemical cleaning methods and other fats, ingress of hydrogen gas is less if the.ช้ไฟฟ้า chemicals can, the first cathode anode cathode of parts with high strength allows Electrolytic degreasing; during the heat treatment, the strict control of the quantity injected and the raphe of the North American Green Vaseline; plating, plating, alkaline or water infiltration in the current performance is less than the quantity of hydrogen.(2), hydrogen, low resistance and the spread of low solubility, hydrogen gas, electrodeposition is commonly believed that in the chrome-plated zinc, cadmium, lead, nickel, Tin, lead, iron, hydrogen, fluids tend to remain down, and Cu, Au, Ag, Al, Mo, W, and metal coating?Na with hydrogen at low resistance and low hydrogen solubility of hydrogen gas permeation is less. Meet the technical conditions required in situations that can be implemented without causing the ingress of hydrogen gas of mechanical zinc coating, chrome, zinc-coated or aluminum, embrittlement. Hydrogen is not corrosion resistance good adhesion and higher. Environmentally friendly power(3) to hydrogen embrittlement and stress plating after plating to eliminate risk if parts dehydroepiandrosterone after fire welding process and the other after the internal residual stress is large enough before plating should have senses, tempering removes the actual stress can reduce a piece within the number of traps, which reduce the risk of hydrogen embrittlement occurs.⑷ coating thickness control coating covers the surface of the coated spring, will play the role of a barrier to the spread of gas, hydrogen, which is a threat to the spread of hydrogen gas into the external anchor. When the thickness of a coating exceeding 2.5 μ m hydrogen explosion out of the spring is very difficult. Therefore, hardness 32HRC < based on the thickness of the coating can get 12 μ m; hardness 32HRC ≥ Thunderbolt thickness coating should be regulated in 8 μ mmax. This requires that the design of products, regardless of the risk of hydrogen embrittlement of high strength bolts as the appropriate choice of the coating and the thickness of the coated. [1]
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