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

Manufacture method of cone annular spherical steel workpieces

A manufacturing method and spherical crown technology, applied in the field of mechanical processing, can solve the problems of high cost, low material utilization rate, long processing cycle, etc., and achieve the effects of reducing production cost, improving processing efficiency and reducing braking cost.

Active Publication Date: 2014-06-11
XIAN AEROSPACEMOTOR MACHINE FACTORY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of long processing cycle, low material utilization rate and high cost in the prior art, the present invention proposes a manufacturing method for steel conical annular spherical crown workpieces

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

[0018] This embodiment is a method for manufacturing a conical annular spherical crown workpiece.

[0019] The material of the bottomless spherical crown workpiece is 30CrMnSiA high-strength steel, and the hardness reaches HRC33-38 after quenching and tempering. The blank used is a plate that has passed the ultrasonic flaw detection inspection. The diameter of the blank is φ670mm and the wall thickness is t13mm. The φ inner diameter of the workpiece after forming = 540mm; φ outer diameter = 630mm; height H = 62mm; wall thickness t = 2.3mm; inner surface SRC356mm. The specific processing steps are:

[0020] Step 1, billet annealing treatment. The blank is annealed in a heat treatment furnace at an annealing temperature of 650° C. and held for 100 minutes. After the heat preservation is over, the billet is cooled by air cooling.

[0021] Step 2, spinning and forming the blank of the ball cap with the bottom. The annealed billet is spun by a double-wheel powerful CNC spinnin...

Embodiment 2

[0030] This embodiment is a method for manufacturing a conical annular spherical crown workpiece.

[0031] The material of the bottomless spherical crown workpiece is 30CrMnSiA high-strength steel, and the hardness reaches HRC33-38 after quenching and tempering. The blank used is a plate that has passed the ultrasonic flaw detection inspection. The diameter of the blank is φ850mm and the wall thickness is t13mm. The φ inner diameter of the workpiece after forming = 650mm; φ outer diameter = 760mm; height H = 80mm; wall thickness t = 3mm; inner surface SRC400mm. The specific processing steps are:

[0032] Step 1, billet annealing treatment. The blank is annealed in a heat treatment furnace, the annealing temperature is 680° C., and the temperature is kept for 100 minutes. After the heat preservation is over, the billet is cooled by air cooling.

[0033]Step 2, spinning and forming the blank of the ball cap with the bottom. The annealed billet is spun by a double-wheel powe...

Embodiment 3

[0042] This embodiment is a method for manufacturing a conical annular spherical crown workpiece.

[0043] The material of the bottomless spherical crown workpiece is 30Si 2 MnCrM o VE ultra-high-strength steel, the hardness reaches HRC45-50 after quenching and tempering. The blank used is a plate that has passed the ultrasonic flaw detection inspection. The diameter of the blank is φ700mm and the wall thickness is t13mm. The φ inner diameter of the workpiece after forming = 550mm; φ outer diameter = 630mm; height H = 60mm; wall thickness t = 2.5mm; inner surface SRC360mm. The specific processing steps are:

[0044] Step 1, billet annealing treatment. The blank is annealed in a heat treatment furnace at an annealing temperature of 700° C. and held for 100 minutes. After the heat preservation is over, the billet is cooled by air cooling.

[0045] Step 2, spinning and forming the blank of the ball cap with the bottom. The annealed billet is spun by a double-wheel powerful...

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

PropertyMeasurementUnit
heightaaaaaaaaaa
thicknessaaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The invention relates to a manufacture method of cone annular spherical steel workpieces. A plate is formed into a spherical blank with a bottom by a rotary pressing method. The obtained spherical blank with the bottom is subjected to heat treatment including annealing treatment and tempering treatment after quenching, then, the mechanical processing is carried out, and spherical parts without the bottom are obtained. For raw materials of the processed parts, the plates are used for replacing open die forgings or die forgings, the consumption of the raw materials is reduced by 85 percent, and the brake cost is effectively reduced. Meanwhile, compared with the open die forging forming method adopted in the prior art, the rotary pressing process adopted for preparing the spherical parts with bottoms has the advantages that a large amount of turning blank preparation time is reduced, the work efficiency is improved by more than one time, and the production cost is reduced by about 30 percent.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for manufacturing a conical annular spherical crown steel workpiece. Background technique [0002] The conical annular spherical crown steel workpiece with an accuracy of IT7 and a diameter of about 1 meter is an important component of a large solid engine. A single engine consumes more than 10 pieces. At present, the forming method of the conical annular spherical crown metal workpiece is generally free forging or die forging through repeated turning. Since this type of workpiece is thin-walled and bottomless, it is necessary to increase the process flange for clamping. The raw material size is large and the material utilization rate is low. very low. In the free forging process, the blank forming method is simple, but the material utilization rate is about 1% to 2% and the processing cycle is very long. It takes a lot of time to remove a large amount of material ...

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): B23P15/00B23P25/00B21D22/14
Inventor 吴军张立武李增辉雷霖李俊峰余大兵杨延涛温树斌陈文会高小宁王伟袁永瑞蒙淑芳邓强焦永灵姚飞李艳辉
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY