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New steel rolling wheel heat treatment technology

A steel roller and wire wheel technology, which is applied in the field of heat treatment of new steel wire rollers, can solve problems such as chipping and unsatisfactory use effects

Inactive Publication Date: 2016-06-29
CHONGQING YEGAO FURNITURE CO LTD
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Problems solved by technology

The existing technology generally adopts Cr12MoV steel thread rolling wheel, the effect of use is not satisfactory, and its failure mode is often chipping

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with embodiment:

[0012] A heat treatment process for a new type of steel thread rolling wheel, using 9SiCr material, comprising the following process steps:

[0013] (1) Preheating: heat in salt bath furnace to 590°C, heating rate 35°C / h, keep warm for 50-80min;

[0014] (2) Quenching treatment: heating temperature 850°C, heating rate 25°C / h; heat preservation 50min, quenching temperature 210°C, time 2h, cooling with nitrate;

[0015] (3) First tempering: tempering temperature 250°C, heat preservation 2h;

[0016] (4) Second tempering: Tempering temperature is 250°C, heat preservation for 2.5h.

[0017] The heat treatment process of a novel steel thread rolling wheel of the invention can improve the surface hardness and cutting toughness of the Cr12MoV steel thread rolling wheel, and improve the service life.

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Abstract

The present invention discloses a new steel rolling wheel heat treatment technology characterized by using 9SiCr as a material, the technology comprises the following steps: (1) preheating, to be more specific, heating in a salt bath furnace to 580-600 DEG C in a heating rate of 30-50 DEG C / h, and thermally insulating for 50-80min; (2) quenching, to be more specific, heating to temperature of 850-860 DEG C in a heating rate of 20-30 DEG C / h; thermally insulating for 30-60min, quenching at quenching temperature of 200-220 DEG C for 2-2.5h, using a nitrate for cooling; (3) first tempering, to be more specific, tempering at tempering temperature of 240-280 DEG C, and thermally insulating for 2-2.5h; and (4) second tempering, to be more specific, tempering at tempering temperature of 240-280 DEG C, and thermally insulating for 2-3h. The new steel rolling wheel heat treatment technology can improve surface hardness, cutting toughness and service life of a Cr12MoV steel rolling wire wheel.

Description

technical field [0001] The invention belongs to the field of heat treatment technology, in particular to a heat treatment technology of a novel steel thread rolling wheel. Background technique [0002] The thread rolling wheel is an external thread rolling tool. In the thread tool and standard parts manufacturing plant, the thread rolling wheel is the key tooling and important tool in the production process. Its life and quality directly affect the accuracy of the processed taps, standard parts and other workpieces. significant impact on production progress. Therefore, the processing quality of the thread rolling wheel is particularly critical. Statistical analysis of the failure of thread rolling wheel shows that heat treatment is undoubtedly the most important influencing factor. Cr12MoV steel thread rolling wheels are generally used in the prior art, and the use effect is not satisfactory, and the failure mode is often chipping. Contents of the invention [0003] Th...

Claims

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Application Information

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IPC IPC(8): C21D9/34C21D1/28
Inventor 车海波
Owner CHONGQING YEGAO FURNITURE CO LTD
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