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Forging method for Y-shaped block forging

A block and forging technology, applied in the field of forging, can solve the problems of long processing cycle, increased production cost, waste of raw materials, etc., and achieve the effects of stable product quality, reduced production cost, and reduced forging cycle

Active Publication Date: 2019-07-19
苏州市东吴锻焊厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional manufacturing method of Y-shaped block forgings is generally formed by forging solid forgings, and then produced by drilling and turning the excess internal allowance. The products produced in this way are cut off due to the internal fiber direction of the forging, which reduces its comprehensive mechanics. performance and service life; or direct molding by casting, but the internal structure and mechanical properties are not easy to control, and there is a problem of uneven distribution of material structure, which makes the comprehensive mechanical properties difficult to meet the use requirements of pressure vessels
The disadvantage is that the traditional forging technology slope of Y-shaped block forgings is not forged, and needs to be processed by subsequent machining.
In this way, the weight of the Y-shaped block forging blank will be very heavy, resulting in waste of raw materials, increased production costs, and long machining cycles

Method used

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  • Forging method for Y-shaped block forging
  • Forging method for Y-shaped block forging
  • Forging method for Y-shaped block forging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-2 Shown, a kind of forging method of Y type block forging, comprises the following steps:

[0024] Step 1: Manufacture the same Y-shaped block template 100 as the Y-shaped block forging. The Y-shaped block template 100 includes a small head 2 and a big-headed square body 1. The big-headed square body 1 includes seven faces, respectively 11, 12, 13, 14, 15, 16, 17, two of the seven faces 16, 17 are symmetrical and parallel sides, the other five faces and the intersecting face 18 of the small head 2 and the big head square body 1 are surrounded The composite section is hexagonal and closed by two sides, and the bottom surface of the small head 2 has a block 21;

[0025] Step 2: Saw the billet into the riser and nozzle; then heat the billet in the furnace, heat it to the initial forging temperature of 1250°C, and heat it for 7 hours before forging; Meter. Saw the riser and nozzle from the billet is to saw the riser and nozzle from the steel ingot.

[...

Embodiment 2

[0029] A method for forging a Y-shaped block forging, comprising the following steps:

[0030] Step 1: Manufacture the same Y-shaped block template 100 as the Y-shaped block forging. The Y-shaped block template 100 includes a small head 2 and a big-headed square body 1. The big-headed square body 1 includes seven faces, respectively 11, 12, 13, 14, 15, 16, 17, two of the seven faces 16, 17 are symmetrical and parallel sides, the other five faces and the intersecting face 18 of the small head 2 and the big head square body 1 are surrounded The composite section is hexagonal and closed by two sides, and the bottom surface of the small head 2 has a block 21;

[0031] Step 2: Saw the billet into the riser and nozzle; then heat the billet in a furnace to the initial forging temperature of 1270°C, and keep it warm for 3.5 hours before forging;

[0032] Step 3: When forging, set a certain preset forging ratio, the preset forging is set to 3.5, pull out the flat square with high pres...

Embodiment 3

[0035] A method for forging a Y-shaped block forging, comprising the following steps:

[0036] Step 1: Manufacture the same Y-shaped block template 100 as the Y-shaped block forging. The Y-shaped block template 100 includes a small head 2 and a big-headed square body 1. The big-headed square body 1 includes seven faces, respectively 11, 12, 13, 14, 15, 16, 17, two of the seven faces 16, 17 are symmetrical and parallel sides, the other five faces and the intersecting face 18 of the small head 2 and the big head square body 1 are surrounded The composite section is hexagonal and closed by two sides, and the bottom surface of the small head 2 has a block 21;

[0037] Step 2: Saw the billet into the riser and nozzle; then heat the billet in a furnace to the initial forging temperature of 1250°C, and then forge after 10 hours of heat preservation;

[0038] Step 3: When forging, set a certain preset forging ratio, the preset forging ratio is set to 4, flatten the square with high p...

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Abstract

The invention discloses a forging method for a Y-shaped block forging. The forging method comprises the following steps of manufacturing a Y-shaped block template, specifically, the Y-shaped block template is the same as the Y-shaped block forging and comprises a small head and a big head square body, the big head square body includes seven faces, two faces of the seven faces are symmetrical and parallel side faces, the other five faces and an intersection face of the small head and the big head square body define a hexagon section enclosed by the two side faces, and the bottom face of the small head is provided with a square block; forming a riser and a nozzle in a blank by sawing; heating the blank in a furnace to the initial forging temperature of 1250-1270 DEG C, holding for 3-10 hours, and then forging the blank; setting a certain preset forging ratio, drawing the blank to be flat square under high pressure, carrying out marking, drawing the small head and the big head square body, then carrying out chamfering and forging, and comparing and repairing the size of the Y-shaped block forging according to the Y-shaped block template in step 1 to obtain a prefabricated forging at the final forging temperature not less than 800 DEG C; and air-cooling or stack-cooling the prefabricated forging to room temperature to obtain the finished Y-shaped block forging.

Description

technical field [0001] The invention relates to a forging method, in particular to a forging method of a Y-shaped block forging. Background technique [0002] The traditional manufacturing method of Y-shaped block forgings is generally formed by forging solid forgings, and then produced by drilling and turning the excess internal allowance. The products produced in this way are cut off due to the internal fiber direction of the forging, which reduces its comprehensive mechanics. performance and service life; or direct molding by casting, but the internal structure and mechanical properties are not easy to control, and there is a problem of uneven distribution of material structure, which makes it difficult for the comprehensive mechanical properties to meet the use requirements of pressure vessels. The disadvantage is that the traditional forging technology slope of Y-shaped block forgings is not forged, and needs to be processed by subsequent machining. In this way, the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/06B21J1/06
CPCB21J1/06B21J5/06
Inventor 徐静皋要翀刘军吴霖
Owner 苏州市东吴锻焊厂有限公司
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