A manufacturing process of gh3625 alloy cold drawn material
A manufacturing process and cold-drawn material technology, which is applied in the field of manufacturing process of GH3625 alloy cold-drawn material, can solve the problems of high yield ratio and affect the safety of alloy, so as to reduce the yield ratio, improve the safety of use, and improve the resistance of the alloy. Effect of Tensile Strength and Yield Strength
Active Publication Date: 2020-12-04
FUSHUN SPECIAL STEEL SHARES
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Problems solved by technology
The mechanical properties of GH3625 alloy cold-drawn material are very high, the tensile strength is greater than 1275MPa, the yield strength is greater than 1137MPa, and the elongation after fracture is greater than 14%. However, there are very few studies on the production process of GH3625 alloy cold-drawn material.
Since the GH3625 alloy is a solid solution alloy, the existing GH3625 alloy cold-drawn materials are strengthened by simple cold deformation to increase the strength, which requires very high equipment performance and mold quality, especially the tensile strength and yield strength of the alloy produced according to this process improved, but the yield-to-strength ratio is too high, such as figure 1 As shown, when the deformation amount is 24.7%, although the performance meets the requirements, the yield ratio reaches 98.6%, which seriously affects the safety of the alloy.
Method used
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Experimental program
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Effect test
Embodiment 2
[0033] The size of the bar is Φ33mm. After the bar is solution treated at 980°C for 1 hour, it is drawn into a Φ27.6mm cold-drawn material, and the cold-drawn deformation is 30%. , and then check the performance. The performance test results are shown in Table 2, and the performance curve is as follows image 3 shown.
[0034] Table 2 performance test results
[0035] Tensile strength (MPa) Yield strength (MPa) Elongation(%) 1474 1365 19
Embodiment 3
[0037] The size of the bar is Φ33mm. After the bar is solution treated at 1020°C for 1 hour, it is drawn into a Φ31.3mm cold-drawn material, and the cold-drawn deformation is 17%. 96h, check the performance later. The performance test results are shown in Table 3, and the performance curve is as follows Figure 4 shown.
[0038] Table 3 performance test results
[0039] Tensile strength (MPa) Yield strength (MPa) Elongation(%) 1356 1176 25
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Abstract
The invention discloses a manufacturing process of a GH3625 alloy cold-drawn material for achieving the purposes of improving the tensile strength and the yield strength of the GH3625 alloy and reasonably reducing the yield ratio of the alloy. The process comprises the flow of: rod solid solution-rod straightening-rod polishing-rod sharpening-rod saponification-rod cold drawing-cold-drawn material barreling and straightening-cold-drawn material aging treatment-cold-drawn material finish polishing-cold-drawn material performance inspection-cold-drawn material finishing and packing; through 17-30% of cold drawing deformation of the rod, the tensile strength and the yield strength are greatly improved, and the plasticity is largely reduced; through the aging treatment, on the one hand, grains are partially returned, the residual hardening strength is reduced, and the plasticity is improved; and on the other hand, a body-centered cubic gamma phase is separated, the precipitated phase is reinforced, the strength is improved, and meanwhile, the yield ratio is reduced. The manufacturing process has the following advantages: when the tensile strength and the yield strength are improved, the yield ratio is largely reduced, and the material use safety is improved; and the process actuation difficulty and the equipment requirements are reduced.
Description
technical field [0001] The invention belongs to the field of metal processing and heat treatment, and in particular relates to a manufacturing process suitable for GH3625 alloy cold drawn material. Background technique [0002] GH3625 alloy is a nickel-based solid solution alloy with molybdenum and niobium as the main strengthening elements. It has excellent comprehensive properties and is widely used in aviation, aerospace, petrochemical and other fields. In recent years, with the development of the petroleum industry, the depth of oil and gas wells has increased, and oil collection equipment has been exposed to harsher environments of high temperature, high pressure and acid gas. GH3625 alloy cold-drawn rods are used to make piston rods for oil drilling pumps Just as it should be. The mechanical properties of GH3625 alloy cold-drawn material are very high, the tensile strength is greater than 1275MPa, the yield strength is greater than 1137MPa, and the elongation after fr...
Claims
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IPC IPC(8): B23P15/00
CPCB23P15/00F16S3/00
Inventor 王志刚李爱民张玉春田水仙张鹏李宁王明闫森曹政李如
Owner FUSHUN SPECIAL STEEL SHARES