CN105755263A - Dividing head main shaft heat treatment process - Google Patents

Abstract

The invention discloses a dividing head main shaft heat treatment process, which is characterized by including: 1) a technological route of: blanking, forging, normalizing, machining, quenching, tempering and machining; 2) technological requirements: (1) normalizing: conducting heat preservation in 830-850DEG C salt bath for 30-50min, performing furnace discharge air cooling directly to eliminate coarse and large grains and loosen the structure; (2) quenching: conducting heat preservation in 810-830DEG C salt bath or 7-8min, performing furnace discharge directly and adding a protective jacket, then putting the product in 5%-10% saline water to conduct cooling for 13-15s, and then immediately transferring the product into 13-15s hot oil for further cooling; and (3) tempering: carrying out heat preservation in a 340-400DEG C nitrate solution for 60min, and then performing oil cooling. The heat treatment process provided by the invention omits a lot of repetitive procedures, improves the work efficiency, can improve all performance of the dividing head main shaft, increases its service life, and enhances its market competitiveness.

Description

A kind of dividing head spindle Technology for Heating Processing

Technical field

The present invention relates to a kind of dividing head spindle Technology for Heating Processing.

Background technology

Dividing head spindle Technology for Heating Processing is complicated at present, not unified standard, and the dividing head spindle quality causing production is uneven, and a lot of operations that repeat also make under production efficiency, increases the work burden of workman, makes the competitiveness of product in market the highest simultaneously.

Summary of the invention

Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of dividing head spindle Technology for Heating Processing, this Technology for Heating Processing eliminates a lot of repeatability operation, improve work efficiency, the performance of dividing head spindle each side can be improved, increase its service life, enhance the market competitiveness.

For achieving the above object, the invention provides a kind of dividing head spindle Technology for Heating Processing, it is characterised in that comprise the steps, 1) process route is: blanking one is forged a normalizing one and is machined a quenching one and be tempered a machining；

2) technological requirement:

(1) normalizing: be incubated 30 50min in the salt bath of 830 850 DEG C, air cooling of directly coming out of the stove, for eliminating thick product grain, pinidine tissue.

(2) quenching: be incubated 7 8min in the salt bath of 810 830 DEG C, directly comes out of the stove after adding protection set, and the saline Cao putting into 5% 10% cools down 13 15s, proceeds to continue in the deep fat of 13 15s cooling immediately；

(3) tempering: being incubated 60min in the nitrate solution of 340 400 DEG C, oil is cold.

The invention has the beneficial effects as follows: the Technology for Heating Processing of the present invention eliminates a lot of repeatability operation, improves work efficiency.The performance of dividing head spindle each side can be improved, increase its service life, enhance the market competitiveness.

Detailed description of the invention

Technical scheme disclosed by the invention is a kind of dividing head spindle Technology for Heating Processing, it is characterised in that comprise the steps, 1) process route is: blanking one is forged a normalizing one and is machined a quenching one and be tempered a machining；

2) technological requirement:

(1) normalizing: be incubated 30 50min in the salt bath of 830 850 DEG C, air cooling of directly coming out of the stove, for eliminating thick product grain, pinidine tissue.

(2) quenching: be incubated 7 8min in the salt bath of 810 830 DEG C, directly comes out of the stove after adding protection set, and the saline Cao putting into 5% 10% cools down 13 15s, proceeds to continue in the deep fat of 13 15s cooling immediately；

(3) tempering: being incubated 60min in the nitrate solution of 340 400 DEG C, oil is cold.The Technology for Heating Processing of the present invention eliminates a lot of repeatability operation, improves work efficiency.The performance of dividing head spindle each side can be improved, increase its service life, enhance the market competitiveness.

The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all technical staff in the art, all should be in the protection domain being defined in the patent claims the most on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. a dividing head spindle Technology for Heating Processing, it is characterised in that comprise the steps, 1) process route is: blanking one is forged a normalizing one and is machined a quenching one and be tempered a machining；

2) technological requirement:

(1) normalizing: be incubated 30 50min in the salt bath of 830 850 DEG C, air cooling of directly coming out of the stove, for eliminating thick product grain, pinidine tissue.

(2) quenching: be incubated 7 8min in the salt bath of 810 830 DEG C, directly comes out of the stove after adding protection set, and the saline Cao putting into 5% 10% cools down 13 15s, proceeds to continue in the deep fat of 13 15s cooling immediately；

(3) tempering: being incubated 60min in the nitrate solution of 340 400 DEG C, oil is cold.