Heat treated carbon steel gate valve sealing surface
Classification:
Release Time：2017-07-28
The so-called heat treatment of carbon steel gate valve sealing surface refers to the heat treatment process of carbon steel valve body and gate surfacing cobalt chromium tungsten carbide sealing surface. Carbon steel valve surfacing cobalt chromium tungsten carbide sealing surface, to stress annealing, the main purpose is to remove the residual stress generated by the welding, improve the mechanical processing performance. For the gate valve with carbon steel matrix, CoCrW hard alloy, SF-4(137) alloy and WF330 or Fe30 parts are welded by spray welding, the heating temperature of stress relief annealing is selected according to the carbon steel matrix material, generally 600~650 ℃. The holding time depends on the effective thickness of the part, generally
The so-called heat treatment of carbon steel gate valve sealing surface refers to the heat treatment process of carbon steel valve body and gate surfacing cobalt chromium tungsten carbide sealing surface. Carbon steel valve surfacing cobalt chromium tungsten carbide sealing surface, to stress annealing, the main purpose is to remove the residual stress generated by the welding, improve the mechanical processing performance.
For the gate valve with carbon steel matrix, CoCrW hard alloy, SF-4(137) alloy and WF330 or Fe30 parts are welded by spray welding, the heating temperature of stress relief annealing is selected according to the carbon steel matrix material, generally 600~650 ℃. The insulation time depends on the effective thickness of the part, generally 1h/25mm, at least 2h. After heat preservation, it is cooled to 300 ℃ with the furnace and then discharged into the furnace for air cooling.
Because the carbon steel gate valve is suitable for different media, different surfacing sealing surface materials can be selected. Suitable for water, steam, petroleum and its products gate valve, general surfacing Cr13 stainless steel, but also some manufacturers surfacing chromium manganese alloy (85 alloy or 137 alloy), copper alloy and iron-based alloy. Wuhan Xiete Valve Technology Co., Ltd. is manufactured according to customer requirements.
Surfacing materials can be divided into two categories according to the effect of heat treatment. A class of cobalt chromium tungsten carbide as the representative, its hardness generally can not be changed by heat treatment, the hardness of the sealing surface by the welding material to ensure. The other is represented by Cr13 stainless steel, whose hardness can be changed by heat treatment, and the hardness of the sealing surface (generally required 38 ~ 44HRC) can be achieved by heat treatment.
Wuhan Xiete Valve Technology Co., Ltd.Committed to the construction of high pressure valves. The main application areas of the valves produced are: electric power, metallurgy, steel and other linesIndustry.
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Wuhan Xiete Valve Technology Co., Ltd.Focus on all kinds of valves,Filter,Gas drainer,Throttle orifice plateIt is a professional manufacturing enterprise integrating R & D, production, sales and after-sales, with 20 years of rich experience in the industry. It owns the Xiete valve brand, builds the best R & D professional team in the industry, and has a number of independently designed and developed patented products. Provide customers with the bestValve function customization solution, and has successfully provided professional design customization services for many enterprises and institutions. At the same time, Wuhan Xiete Valve Technology Co., Ltd. has obtained ISO9001 quality system certification and TS special equipment license. Our product types, complete styles, quality assurance, factory direct sales, economical, convenient and fast to provide customers with one-stop service!
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