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A thermal simulation method for deformation heat treatment of high-strength automotive steel impact specimens
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A technology for deformation heat treatment and impact specimens, applied in the field of thermal simulation
Active Publication Date: 2019-01-08
NORTHEASTERN UNIV LIAONING
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[0007] Aiming at the problem that it is difficult for existing thermal simulation testing machines to perform high-temperature deformation heat treatment on large-sized samples shaped like impact samples, the present invention provides a thermal simulation method for deformation heat treatment of high-strength automobile steel impact samples; There is a thermal simulation testingmachine, which performs high-temperature compression deformation and subsequent heat treatment on the narrow area of the simulated sample to realize the thermal simulation of the impact blank sample. It is a kind of high-strength automobile steel impact sample on the existing thermal simulation testingmachineThermal simulation method for thermomechanical treatment
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Embodiment 1
[0106] A kind of material is the thermal simulation method of the deformation heat treatment of the impact sample of 22MnB5 hot-formed steel, specifically comprises the following steps:
[0107] Step 1, perform (A) and (B), (A) and (B) in no order:
[0108] (A) Determine the size of the simulated sample:
[0109] Based on the size of the standard impact sample, determine the size of the simulated sample:
[0110] The standard impact sample is a cuboid, and the specific dimensions are as follows: figure 1 As shown, suppose: the length of the bottom of the cuboid is H 长 = The width of the base of the cuboid is H 宽 =10mm, the height of the cuboid is H 高 = 55mm.
[0111] The structure of the simulated sample is an integrated structure. The simulated sample is composed of a simulated cuboid, 2 stepped platforms and 2 clamping ends. The same stepped platforms are respectively arranged on both sides of the two bottom surfaces of the simulated cuboid. The two sides are respectiv...
Embodiment 2
[0146] A thermal simulation method for deformation heat treatment of impact specimens of high-strength plastic heat-forming experimental steel, the composition and mass percentage of the high-strength plastic heat-forming experimental steel are: C: 0.19, Si: 1.55, Mn: 1.53 , Ni: 0.95, Cr: 1.01, Cu: 1.01, B: 0.0027, Al: 0.025, Ti: 0.033, Mo: 0.45, S: 0.004, P: 0.008, and the balance is Fe, specifically including the following steps:
[0147] Step 1, perform (A) and (B), (A) and (B) in no order:
[0148] (A) Determine the size of the simulated sample:
[0149] Based on the size of the standard impact sample, determine the size of the simulated sample:
[0150] The standard impact sample is a cuboid, and the specific dimensions are as follows: figure 1 As shown, suppose: the length of the bottom of the cuboid is H 长 = The width of the base of the cuboid is H 宽 =10mm, the height of the cuboid is H 高 = 55mm.
[0151] The structure of the simulated sample is an integrated stru...
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Abstract
A thermal simulation method for deformation heat treatment of high-strength automotive steel impact specimens, belonging to the field of thermal simulation technology. Method: 1) Based on the size of the standard impact sample, determine the size of the simulated sample. The simulated sample consists of a simulated cuboid, 2 stepped platforms and 2 clamping ends; determine the high-temperature deformation heat treatment process parameters during the thermal simulation process. ; 2) Weld the thermocouple on the surface of the simulated cuboid of the simulated sample; 3) Install the simulated sample on the thermal simulator; 4) Heat the simulated sample to determine the uniform temperature area of the simulated sample after heating; 5) Conduct a compression test on the simulated sample to determine the uniform temperature zone after compression of the simulated sample; 6) Cool the simulated sample; 7) Observe the surface of the simulated sample; 8) Process the simulated sample into a standard impact sample and Verify whether the impact process is effective; the thermal simulation method of the present invention can improve the repeatability of the tissue preparation of high-strength automotive steel impact samples and the control accuracy of process parameters.
Description
technical field [0001] The invention belongs to the technical field of thermal simulation, in particular to a thermal simulation method for deformation heat treatment of high-strength automobile steel impact specimens. Background technique [0002] As the three major themes in the automotive field, energy saving, environmental protection and safety have always been valued. In recent years, with the stricter car collision safety level and exhaust emission standards, on the premise of ensuring the safety performance of the car, it is necessary to reduce the curb quality of the car as much as possible, improve the power of the car, reduce fuel consumption, and reduce the risk of exhaust pollution. Automobile lightweight technology has achieved rapid development. Therefore, the scope and proportion of advanced high-strength steel and ultra-high-strength steel in the manufacture of automobile body-in-white are rapidly increasing. It is worth noting that the ultra-high strength ...
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