CN104805453A - Variable-speed gear carburizing and quenching hot working method - Google Patents

Abstract

The invention relates to the technical field of metal heat treatment, in particular to a variable-speed gear carburizing and quenching hot working method. The variable-speed gear carburizing and quenching hot working method comprises the following steps: step 1, carburizing by adopting a well type gas carburizing furnace at the temperature of 900-950 DEG C for 4-6 hours, wherein the depth of a carburizing layer is 2 mm; step 2, quenching at the temperature of 860 DEG C for 3 hours, wherein a quenching medium is 10# machine oil; step 3, tempering at the temperature of 150 DEG C for 2 hours; step 4, cleaning a gear; step 5, inspecting the gear. According to the variable-speed gear carburizing and quenching hot working method disclosed by the invention, the process route design is reasonable, that the processed gear has a good mechanical property, and a gear surface has high contact fatigue strength is ensured.

Description

A kind of variable gear carburizing and quenching thermal processing method

Technical field

The present invention relates to technical field of metal heat treatment, be specifically related to a kind of variable gear carburizing and quenching thermal processing method.

Background technology

Along with science and technology and industrial develop rapidly, each department of economy in the urgent need to various Functionality, quality and appealing design, performance is good, efficiency is high, energy consumption is low, price is honest and clean engineering goods.Variable gear, as the effective transmission components of one, is widely used aborning.Gear surface bears larger contact stress, and bearing strong frictional force at high speeds, the gear teeth, under the effect of repeated stress, work long hours and repeated stress failure may occur, may be there is wearing and tearing and point corrosion in the flank of tooth, therefore require that the flank of tooth has high contact fatigue strength under strong rubbing effect.Therefore, how by improving heat processing technique, improving gear performance and becoming problem demanding prompt solution.

Summary of the invention

For solving the above-mentioned problems in the prior art, the invention provides a kind of variable gear carburizing and quenching thermal processing method.

Technique effect of the present invention is achieved through the following technical solutions:

A kind of variable gear carburizing and quenching thermal processing method, comprises the following steps:

Step one: adopt pit gas carburizing furnace carburizing, temperature 900-950 DEG C, time 4-6 hour, case depth 2mm;

Step 2: quenching, temperature 860 degrees Celsius, 3 hours time, quenchant is 10# machine oil;

Step 3: tempering, temperature 150 DEG C DEG C, time 2 h;

Step 4: gear is cleaned;

Step 5: gear is tested.

The invention has the beneficial effects as follows:

A kind of variable gear carburizing and quenching thermal processing method disclosed in this invention, Process Route is reasonable, and what can ensure machining gears has good mechanical property, and the flank of tooth has high contact fatigue strength.

Embodiment

The present invention is realized by following embodiment:

A kind of variable gear carburizing and quenching thermal processing method, comprises the following steps:

Step one: adopt pit gas carburizing furnace carburizing, temperature 900-950 DEG C, time 4-6 hour, case depth 2mm;

Step 2: quenching, temperature 860 degrees Celsius, 3 hours time, quenchant is 10# machine oil;

Step 3: tempering, temperature 150 DEG C DEG C, time 2 h;

Step 4: gear is cleaned;

Step 5: gear is tested.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (1)

1. a variable gear carburizing and quenching thermal processing method, is characterized in that: comprise the following steps:

Step one: adopt pit gas carburizing furnace carburizing, temperature 900-950 DEG C, time 4-6 hour, case depth 2mm;

Step 2: quenching, temperature 860 degrees Celsius, 3 hours time, quenchant is 10# machine oil;

Step 3: tempering, temperature 150 DEG C DEG C, time 2 h;

Step 4: gear is cleaned;

Step 5: gear is tested.