Martensitic stainless steel welding method and application thereof
A technology of martensitic stainless steel and welding methods, which can be applied in welding equipment, arc welding equipment, manufacturing tools, etc., and can solve the problems of reduced mechanical properties, fatigue properties, etc.
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Embodiment 1
[0055] The present embodiment provides the welding method of martensitic stainless steel, comprises the steps:
[0056] (1) Casting the martensitic stainless steel test plate by investment casting process: Specifically, the alloy ingot is obtained after vacuum induction melting according to the composition and ingredients of the martensitic stainless steel sample, and the alloy ingot is reweighted in a vacuum induction furnace Melting, controlling the pouring temperature at 1520°C to 1600°C, the mold shell temperature at 1000°C±20°C, and casting to obtain a martensitic stainless steel test plate; among them, the parameters for preparing alloy ingots by vacuum induction melting include: the melting temperature is 1540°C±20°C 20°C, the refining time is 10min-20min, the vacuum degree is 0.01Pa-0.1Pa, and the pouring temperature is 1520°C±20°C; the martensitic stainless steel includes the following components by weight percentage: C: 0.026%; Si : 0.60%; Mn: 0.18%; P: 0.023%; S: 0....
Embodiment 2
[0064] The present embodiment provides the welding method of martensitic stainless steel, comprises the steps:
[0065] (1) Prepare a martensitic stainless steel test plate according to the method of step (1) in Example 1.
[0066] (2) The martensitic stainless steel test plate obtained by casting is firstly subjected to fluorescence inspection, and no cracks, cold shuts, corresponding and penetrating defects are allowed; then X-ray inspection is performed, and no cracks, cold shuts, shrinkage cavities and High density of inclusion defects.
[0067] (3) Standard heat treatment is carried out on the martensitic stainless steel test plate that has passed the inspection in step (2), that is, firstly in an argon atmosphere, at a temperature of 1070°C ± 10°C for 1 hour, and air-cooled to room temperature; then at a temperature of 580°C ± Incubate at 10°C for 1 h, then air cool to room temperature.
[0068] (4) Under the argon protective atmosphere of the martensitic stainless ste...
Embodiment 3
[0073] The present embodiment provides the welding method of martensitic stainless steel, comprises the steps:
[0074] (1) Prepare a martensitic stainless steel test plate according to the method of step (1) in Example 1.
[0075] (2) The martensitic stainless steel test plate obtained by casting is firstly subjected to fluorescence inspection, and no cracks, cold shuts, corresponding and penetrating defects are allowed; then X-ray inspection is performed, and no cracks, cold shuts, shrinkage cavities and High density of inclusion defects.
[0076] (3) Standard heat treatment is carried out on the martensitic stainless steel test plate that has passed the inspection in step (2), that is, firstly in an argon atmosphere, at a temperature of 1070°C ± 10°C for 1 hour, and air-cooled to room temperature; then at a temperature of 580°C ± Incubate at 10°C for 1 h, then air cool to room temperature.
[0077] (4) Under the argon protective atmosphere of the martensitic stainless ste...
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