Unlock instant, AI-driven research and patent intelligence for your innovation.

Forging process of a gear shaft

A gear shaft and process technology, applied in the field of forging, can solve problems such as uneven internal deformation, and achieve the effects of good internal quality, easy forming, and uniform internal deformation

Active Publication Date: 2018-10-16
JIANGSU JINYUAN FORGE
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a forging process of a gear shaft, which overcomes the defect of uneven internal deformation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] A forging process of a gear shaft, which is characterized in that it includes the following steps: 1), the first fire billet steel ingot is heated to a temperature of 1200 ° C, the jaw is pressed, chamfered, and the spout is inserted; 2), the second fire is carried out on 1) step The obtained billet is reheated to 1150°C, upsetting and elongated by using an arc-shaped toothed anvil with an upper convex and a lower recess; 3), the third fire reheats the billet obtained in step 2), and is heated to 1100°C ℃, closed rolling extrusion; 4), final forging: the final forging temperature is 800 ℃, using a flame furnace for one-stage heating, using arc-shaped tooth-shaped convex and concave anvils for upsetting, and drawing to the specified size. 5), heat treatment: heating to 800 ° C for 1 hour, air cooling to 500 ° C, heating to 590 ° C, air cooling; The anvil is two or more circular arc convex surfaces with equal radius that protrude from the conical surfaces on both sides to...

Embodiment 2

[0008] A forging process of a gear shaft, which is characterized in that it includes the following steps: 1), the first fire billet steel ingot is heated to a temperature of 1200 ° C, the jaw is pressed, chamfered, and the spout is inserted; 2), the second fire is carried out on 1) step The obtained billet is reheated to 1160°C, upsetting and elongated with an arc-shaped tooth-shaped anvil with an upper convex and a lower recess; 3), the third fire reheats the billet obtained in step 2), and is heated to 1110°C ℃, closed rolling extrusion; 4), final forging: the final forging temperature is 800 ℃, using a flame furnace for one-stage heating, using arc-shaped tooth-shaped convex and concave anvils for upsetting, and drawing to the specified size. 5), heat treatment: heating to 850° C. for 1.3 hours, air cooling to 500° C., heating to 600° C., air cooling; The anvil is two or more circular arc convex surfaces with equal radius that protrude from the conical surfaces on both side...

Embodiment 3

[0010] A forging process of a gear shaft, which is characterized in that it includes the following steps: 1), the first fire billet steel ingot is heated to a temperature of 1200 ° C, the jaw is pressed, chamfered, and the spout is inserted; 2), the second fire is carried out on 1) step The obtained billet is reheated to 1180°C, upsetting and elongated with an arc-shaped tooth-shaped anvil with an upper convex and a lower recess; 3), the third fire is to reheat the billet obtained in step 2), and heated to 1120°C ℃, closed rolling extrusion; 4), final forging: the final forging temperature is 800 ℃, using a flame furnace for one-stage heating, using arc-shaped tooth-shaped convex and concave anvils for upsetting, and drawing to the specified size. 5), heat treatment: heating to 860 ° C for 1.5 hours, air cooling to 500 ° C, heating to 610 ° C, air cooling; The anvil is two or more circular arc convex surfaces with equal radius that protrude from the conical surfaces on both si...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to forging process of a gear shaft. The forging process includes the steps of firstly, using first fire to heat a blank steel ingot to 1200 DEG C, pressing a tongs hold, chamfering, and grinding a water gap; secondly, using second fire to heat the blank material obtained in the first step to 1150-1180 DEG C, using an arc-tooth-shaped swage block with a convex upper portion and a concave lower portion to perform upsetting, and drawing out; thirdly, using third fire to heat the blank material obtained in the second step to 1100-1120 DEG C, and performing closed rolling-extruding; fourthly, performing finish forging at 800 DEG C, to be more specific, using a flame furnace to perform one-stage heating, using the arc-tooth-shaped swage block with the convex upper portion and the concave lower portion to perform upsetting, and drawing out to the regulated size; fifthly, performing heat treatment, to be more specific, heating to 850+ / -10 DEG C, keeping the temperature for 1-1.5 hours, performing air cooling to reach 500 DEG C, heating to 600+ / -10 DEG C, and performing air cooling. The forging process has the advantages that the product produced by the forging process is even in internal deformation, easy in formation, good in internal quality and high in toughness.

Description

technical field [0001] The invention belongs to the technical field of forging, in particular to a forging process of a gear shaft. Background technique [0002] Gear shafts are important mechanical transmission parts in large-scale equipment such as steam turbines and generators, and their quality directly affects the performance level of related products. At present, the domestic gear shaft forging process mainly has defects such as uneven internal deformation, resulting in poor toughness. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned technical problems, to provide a forging process of a gear shaft, which overcomes the defect of uneven internal deformation. Its technical scheme is as follows: a forging process of a gear shaft, which is characterized in that it includes the following steps: 1), heating the first fire billet steel ingot to 1200°C, pressing the jaws, chamfering, and staggering the nozzle; 2), the sec...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/12
CPCB21K1/12
Inventor 葛艳明袁志伟王远林
Owner JIANGSU JINYUAN FORGE