Heat treatment process of resistance strain gauge force transducer stainless steel elastomer

A force sensor and stainless steel technology is applied in the field of heat treatment process of stainless steel elastomer of strain type force sensor, which can solve the problems affecting the performance of strain type force sensor precipitation hardening martensitic stainless steel elastomer and the decrease in strength of stainless steel, and achieve the reduction of internal stress. , the effect of reducing lag

Inactive Publication Date: 2020-07-10
苏州思传电子测量技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

For example, Jiang Laijun believes that the quenching temperature is too low to make the precipitation hardened martensitic stainless steel uniform, but the quenching temperature is too high will lead to a decrease in the strength of the precipitation hardened martensitic stainless steel, which will affect the elasticity of the strain gauge force sensor

Method used

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Examples

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specific Embodiment 1

[0042] This specific embodiment provides the heat treatment process of the strain gauge force sensor 0Cr17Ni4Cu4Nb stainless steel elastomer, and the specific operation steps include:

[0043] 1) Pretreatment: The 0Cr17Ni4Cu4Nb stainless steel elastomer of the strain gauge force sensor is put into a vacuum high-pressure gas quenching furnace after strict ultrasonic cleaning and evacuated to 2×10 -3 Pa;

[0044] 2) Vacuum degassing: Slowly heat the 0Cr17Ni4Cu4Nb stainless steel elastomer of the strain gauge force sensor to 950°C in a vacuum high-pressure gas quenching furnace, with a heating rate of 3°C / min, and keep warm at 400°C and 700°C for 60 minutes, and finally in 950 ℃ for 10 hours to complete the vacuum degassing, the thermal vacuum degree of the vacuum chamber during the whole degassing process is not less than 5×10 -3 Pa;

[0045] 3) Vacuum high-pressure gas quenching: Firstly, nitrogen gas is introduced into the vacuum to maintain the pressure in the vacuum chamber ...

specific Embodiment 2

[0051] This embodiment provides the heat treatment process of the strain gauge force sensor 17-4PH stainless steel elastomer, and the specific operation steps include:

[0052] 1) Pretreatment: The 17-4PH stainless steel elastomer of the strain gauge force sensor is put into a vacuum high-pressure gas quenching furnace after strict ultrasonic cleaning and evacuated to 5×10 -4 Pa;

[0053] 2) Vacuum degassing: Slowly heat the 17-4PH stainless steel elastomer of the strain gauge force sensor to 950°C in a vacuum high-pressure gas quenching furnace at a heating rate of 2°C / min, and keep warm at 500°C and 700°C for 45 minutes respectively; Then heat it at 950°C for 5 hours to complete vacuum degassing, and the thermal vacuum degree of the vacuum chamber during the whole degassing process is not less than 5×10 -3 Pa;

[0054] 3) Vacuum high-pressure gas quenching: Firstly, nitrogen gas is introduced into the vacuum to maintain the pressure in the vacuum chamber at 0.05Pa, and the...

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Abstract

The invention discloses a heat treatment process of a resistance strain gauge force transducer stainless steel elastomer, and belongs to the technical field of a heat treatment process of a metal material. The heat treatment process mainly comprises steps of pretreatment, vacuum degassing, vacuum high-pressure gas quenching, deep cooling treatment, vacuum aging treatment and vacuum stabilizing treatment. Before vacuum high-pressure gas quenching, vacuum degassing is added for reduce gas impurities of martensitic stainless steel, under the low heating temperature, long-time vacuum degassing iscarried out, temperature and time needed by vacuum high-pressure gas quenching austenitizing can be reduced, a fine uniform austenite structure can be obtained, through procedures of slow heating before vacuum hihg-pressure gas quenching, uniform rapid cooling of a cooling stage, reducing of heating and cooling speed of deep cooling treatment and vacuum aging treatment, adding of the vacuum stabilizing treatment procedure after vacuum aging treatment and the like, the material inner stress can be greatly removed, the process can obviously reduce hysteresis of the elastomer until the it is notlarger than 70 ppm, and needs of the C6 level for the low-hysteresis resistance strain gauge force transducer stainless steel elastomer can be met.

Description

technical field [0001] The invention relates to a heat treatment process, in particular to a heat treatment process for a stainless steel elastic body of a strain gauge force sensor, and belongs to the technical field of heat treatment processes for metal materials. Background technique [0002] The elastic body is the core component of the strain type force sensor, and its hysteresis characteristics have a great influence on the measurement accuracy, stability and reliability of the strain type force sensor. Among them, the material selection and processing technology of the elastic body of the low hysteresis strain type force sensor are developed The key to high precision strain gauge force sensors. [0003] Martensitic stainless steel has high strength and corrosion resistance, and is an ideal elastic material for strain gauge force sensors. Factors affecting the hysteresis characteristics of martensitic stainless steel strain gauge force sensor elastomers mainly include ...

Claims

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Application Information

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IPC IPC(8): C21D1/773C21D1/18C21D1/76C21D6/04C21D9/00
CPCC21D1/18C21D1/76C21D1/773C21D6/04C21D9/0068C21D2211/001C21D2211/004C21D2211/008
Inventor 付志强高鹏
Owner 苏州思传电子测量技术有限公司
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