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Bainite Quenching Process of Steel Tape

A bainite and process technology, applied in the field of bainite quenching process, can solve the problems of low power utilization efficiency, serious heat loss, low fatigue strength, etc. The effect of production efficiency

Inactive Publication Date: 2020-08-11
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The final result of this process is martensite structure, which has high hardness, high brittleness, and low fatigue strength. In addition, the resistance furnace heats the muffle tank first, and then heats the tape, so the heat loss is serious and the utilization efficiency of electric energy is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The thickness of the experimental tape in this embodiment is 0.11mm, and the width is 13mm. According to the requirements, the steel tape with the corresponding thickness and material is selected for blanking. After blanking, the tape that meets the thickness and material requirements is obtained, and the tape is placed in the cleaning agent. Clean to remove the anti-rust oil on the tape surface.

[0039] This quenching process comprises the steps:

[0040] (1) Heating: The tape travels at a constant speed of 42mm / s through a quenching inductor with a length of 400mm and is heated to 886°C in the quenching inductor. Fill the protective device arranged on the outer periphery of the quenching sensor with argon at an intake rate of 8.6L / min; the side length of the cross-sectional inner wall of the quenching sensor is 8.1mm, and the wall thickness is 1.0mm; the induction coil of the quenching sensor The number of turns is 32 turns; the power of the induction hardening mach...

Embodiment 2

[0045] The thickness of the experimental tape in this embodiment is 0.12mm, and the width is 8mm. According to the requirements, the steel tape with the corresponding thickness and material is selected for blanking. After blanking, the tape that meets the thickness and material requirements is obtained, and the tape is placed in the cleaning agent. Clean to remove the anti-rust oil on the tape surface.

[0046] This quenching process comprises the steps:

[0047] (1) Heating: The tape passes through the quenching inductor with a length of 440mm at a constant speed of 45mm / s and is heated to 882°C in the quenching inductor. Fill the protective device arranged on the outer periphery of the quenching sensor with argon at an intake rate of 9.3L / min; the side length of the cross-sectional inner wall of the quenching sensor is 8.4mm, and the wall thickness is 1.3mm; the induction coil of the quenching sensor The number of turns is 35 turns; the power of the induction hardening mach...

Embodiment 3

[0052] The thickness of the test tape in this embodiment is 0.13mm, and the width is 12mm. According to the requirements, the steel strip with the corresponding thickness and material is selected for blanking. After blanking, the tape that meets the thickness and material requirements is obtained, and the tape is placed in the cleaning agent Clean to remove the anti-rust oil on the tape surface.

[0053] This quenching process comprises the steps:

[0054] (1) Heating: The tape passes through the quenching inductor with a length of 490mm at a constant speed of 50mm / s and is heated to 887°C in the quenching inductor. Fill the protective device arranged on the outer periphery of the quenching sensor with argon at an intake rate of 10L / min; the side length of the inner wall of the section of the quenching sensor is 8.7mm and the wall thickness is 1.6mm; The number of turns is 38 turns; the power of the induction hardening machine tool is 220KW, the frequency is 5800Hz, and the D...

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Abstract

The invention provides a bainite quenching process of a steel tape. The process comprises the following steps of (1) heating: making the tape pass through a heating device at the constant speed to beheated in the heating device to 880-900 DEG C; (2) cooling: making the tape pass through a cooling device at the temperature of 310-330 DEG C at the constant speed to be cooled in the cooling device after heating in the step (1), and then blowing the tape with inert gas to the room temperature to obtain the tape with a bainite structure; (3) cleaning: making the tape pass through a cleaning deviceat the constant speed, and then blowing off a cleaning medium on the surface of the tape with the inert gas. The quenching process has excellent wear resistance, maintains high hardness while maintaining good toughness, does not require a tempering process, simplifies the process, reduces costs, and improves production efficiency.

Description

technical field [0001] The invention relates to the field of heat treatment process quenching, in particular to a bainite quenching process for a steel tape. Background technique [0002] A steel tape measure is a relatively common measuring tool in life, and it is one of the commonly used tools in the family. Because it is easy to use, easy to carry, and can meet the measurement accuracy of various objects, it is widely used in many industries, especially the construction industry and decoration industry. When measuring the length of an object, one end of the steel tape is often fixed and then tightened. Steel tape, the tape protrudes from the scale shell, and the length value of the object can be read by using the corresponding number marked on the steel tape tape. When the measurement is finished, the tape is pulled by the spiral spring in the scale The inner coil of the ruler housing is rolled up and sticks out of the ruler housing again the next time you use it. The p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/20C21D1/42C21D9/52
CPCC21D1/42C21D1/60C21D9/52C21D2211/002Y02P10/25
Inventor 刘泽军李艳许胜军刘志强李壮文陈真李军霞
Owner HENAN POLYTECHNIC UNIV
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