Heat treatment technology of automobile outer joint bell-shaped shell

A bell-shaped shell and outer ball cage technology, applied in the field of mechanical processing, can solve the bell-shaped shell spline shank strength, impact resistance toughness and fatigue resistance, inner cavity surface hardness, wear resistance and contact fatigue limit, etc. problems, to achieve the effect of high contact fatigue limit, good wear resistance and convenient operation

Inactive Publication Date: 2015-10-14
安徽索特汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spline shank strength, impact toughness and fatigue resistance of the bell-shaped shell produced by this process, as well as the hardness, wear resistance and contact fatigue limit of the inner cavity surface are still insufficient, and need to be improved

Method used

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  • Heat treatment technology of automobile outer joint bell-shaped shell
  • Heat treatment technology of automobile outer joint bell-shaped shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Normalizing: send the forged bell-shaped shell into a heating furnace with a temperature of 845° C. for heating for 62 minutes, and oil cool to 25° C. after the heat preservation is completed;

[0022] (2) Quenching: the cooled bell shell is installed in the GCK1030-10150 fully enclosed quenching machining center for intermediate frequency induction heating. The gap between the inductor of the quenching machine tool and the bell shell is 2mm, and the bell shell on the The quenching processes of the spline shank and the inner cavity are as follows: a. Spline shank: quenching power 110kW, induction frequency 9kHz, heating time 7s, cooling time 6s, quenching liquid temperature 22°C, quenching liquid injection pressure 0.27MPa; b , Inner cavity: quenching power 198kW, induction frequency 9kHz, heating time 6s, cooling time 6s, quenching liquid temperature 20°C, quenching liquid injection pressure 0.27MPa;

[0023] (3) Tempering: After quenching, put the bell-shaped shel...

Embodiment 2

[0025] (1) Normalizing: send the forged bell-shaped shell into a heating furnace with a temperature of 850° C. for heating for 65 minutes, and oil cool to 30° C. after the heat preservation is completed;

[0026] (2) Quenching: the cooled bell shell is installed in the GCK1030-10150 fully enclosed quenching machining center for intermediate frequency induction heating. The gap between the inductor of the quenching machine tool and the bell shell is 2mm, and the bell shell on the The quenching processes of the spline shank and the inner cavity are as follows: a. Spline shank: quenching power 112kW, induction frequency 9kHz, heating time 7s, cooling time 7s, quenching liquid temperature 25°C, quenching liquid injection pressure 0.28MPa; b , Inner cavity: quenching power 200kW, induction frequency 9kHz, heating time 7s, cooling time 6s, quenching liquid temperature 25°C, quenching liquid injection pressure 0.29MPa;

[0027] (3) Tempering: After quenching, put the bell-shaped shel...

Embodiment 3

[0029] (1) Normalizing: the forged bell-shaped shell is sent into a heating furnace with a temperature of 860°C for heating for 68 minutes, and the oil is cooled to 35°C after the heat preservation is completed;

[0030] (2) Quenching: the cooled bell shell is installed in the GCK1030-10150 fully enclosed quenching machining center for intermediate frequency induction heating. The gap between the inductor of the quenching machine tool and the bell shell is 3mm. The quenching processes of the spline shank and the inner cavity are as follows: a. Spline shank: quenching power 120kW, induction frequency 10kHz, heating time 6s, cooling time 7s, quenching liquid temperature 35°C, quenching liquid injection pressure 0.35MPa; b , Inner cavity: quenching power 205kW, induction frequency 10kHz, heating time 7s, cooling time 7s, quenching liquid temperature 35°C, quenching liquid injection pressure 0.35MPa;

[0031] (3) Tempering: After quenching, put the bell-shaped shell into a heat tr...

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Abstract

The invention discloses a heat treatment technology of an automobile outer joint bell-shaped shell, and relates to the mechanical processing technical method; the heat treatment technology includes three technological processes: normalizing, quenching and tempering; by optimizing the normalizing technology, the bell-shaped shell with a metallographic structure of pearlite and ferrite is obtained after cooling, and the structure is good; in the quenching process, different quenching technologies are adopted on a spline handle part and an inner cavity of the bell-shaped shell; the strength of the obtained bell-shaped shell spline handle part after tempering is high, the resistance to impact toughness is good, the fatigue resistance is excellent, the hardness of the surface of the inner cavity is high, the abrasion resistance is good, the contact fatigue limit is high, the depth of a quench-hardened layer is reasonable, digitization control is adopted in the quenching process, the operation is convenient and fast, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a heat treatment process for an automobile outer spherical cage bell-shaped shell. Background technique [0002] The ball cage (cage), also called "constant velocity universal joint", is an important part of the transmission system of a car. Its function is to transmit the power of the engine from the transmission to the two front wheels to drive the car to run at high speed. There are many types of constant velocity universal joints used in cars, among which the most widely used are ball cage type constant velocity universal joints and tripod type constant velocity universal joints, which mainly include sliding sleeves, three-way shafts, transmission shafts, star It is composed of the main parts of sleeve, cage and bell shell. Because the constant velocity universal joint transmits heavy driving torque, the load is heavy, the transmission precision is high, the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D9/00
Inventor 王斌勇
Owner 安徽索特汽车零部件有限公司
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