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Forging forming method for plate with large width-to-thickness ratio

A technology of forging forming and width-thickness ratio, which is applied in the field of metal forging, and achieves the effect of simple implementation steps and easy operation of implementation steps.

Pending Publication Date: 2022-03-22
DAYE SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a forging forming method for a plate with a large aspect ratio, so as to solve or alleviate the problems in the above-mentioned prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present application provides an embodiment of the forging forming method of a plate with a large aspect ratio. The forging forming method of a plate with a large aspect ratio includes the following steps:

[0027] Heating process: The steel ingot is heated to 480°C in a heating furnace, and kept at a temperature of 2.5 hours, then heated to 850°C at a heating rate of 100°C / h, kept at a temperature of 2.5 hours, and then heated to 1225°C at a heating rate of 110°C / h , keep warm for 5h;

[0028] Steel ingot upsetting: control the steel ingot upsetting temperature to 850°C, and the steel ingot is upset when it comes out of the furnace, and the upsetting ratio is 2.0;

[0029] Slab forming: after upsetting, turn the steel ingot with clamps, and stretch it horizontally until the length reaches 3 / 5 of the finished product (the error is required to be less than 1 / 20 of the finished product length), then return to the furnace and reheat for 2 hours, lightly upsetting during...

Embodiment 2

[0033] The present application provides an embodiment of the forging forming method of a plate with a large aspect ratio. The forging forming method of a plate with a large aspect ratio includes the following steps:

[0034] Heating process: The steel ingot is heated to 460°C in a heating furnace, and kept at a temperature of 2.5 hours, then heated to 880°C at a heating rate of 105°C / h, kept at a temperature of 2.5 hours, and then heated to 1240°C at a heating rate of 115°C / h , keep warm for 5h;

[0035] Steel ingot upsetting: Control the steel ingot upsetting temperature to 800°C, and the steel ingot is upset when it comes out of the furnace, and the upsetting ratio is 1.9;

[0036] Slab forming: after upsetting, turn the steel ingot with clamps, and stretch it horizontally until the length reaches 3 / 5 of the finished product (the error is required to be less than 1 / 20 of the finished product length), then return to the furnace and reheat for 2 hours, lightly upsetting during...

Embodiment 3

[0040] This embodiment provides a forging forming method for a plate with a large aspect ratio. Compared with Embodiment 1, the manufacturing process is the same except for the heating process.

[0041] In the heating process of this embodiment, the steel ingot is heated to 500°C in a heating furnace and kept at a temperature of 2.5 hours, then heated to 870°C at a heating rate of 110°C / h, kept at a temperature of 2.5 hours, and then heated at a rate of 115°C / h Heat at a rate of 1240°C and keep warm for 5h.

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PUM

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Abstract

The invention provides a forging forming method for a plate with a large width-thickness ratio, and the forging forming method for the plate with the large width-thickness ratio comprises the following working procedures: heating; the upsetting and drawing temperature of the steel ingot is controlled to be larger than or equal to 800 DEG C, the steel ingot is discharged out of a furnace and upset, and the upsetting ratio is 1.8-2.2; forming a plate blank: turning the steel ingot by using a holding clamp after upsetting, transversely drawing out, turning the steel ingot to a normal direction by using the holding clamp, and forging and pressing to the size of a finished product; the furnace temperature is increased to 660-680 DEG C, heat preservation is conducted for 8 h, then the cooling rate is controlled to be smaller than or equal to 30 DEG C / h, and furnace cooling is conducted till the temperature of the plate blank is decreased to 200 DEG C; plate warehousing: plate blank surface inspection and flaw detection are carried out, part of plate blanks at the feeding end and the arcing end are cut off, and finished products are packaged and warehoused after being inspected to be qualified. According to the forging forming method for the plate with the large width-to-thickness ratio, the problem that the plate with the large width-to-thickness ratio cannot be manufactured in the prior art can be solved, the blank in the forging technology is filled, and the implementation steps are simple and easy to operate.

Description

technical field [0001] The present application relates to the technical field of metal forging, in particular to a forging forming method for plates with a large aspect ratio. Background technique [0002] At present, metal parts are pursuing higher structural strength, and the demand for forged plates with large width-to-thickness ratio is increasing. However, the existing forging production lines generally require forged flat steel to have a width-to-thickness ratio of ≤6. If the forging process is greater than 6, it is difficult to ensure the shape of the plate, especially It is based on the deformation principle of the metal, and the expansion is affected by the flow of the metal, so that the size requirement cannot be guaranteed: when a certain size is reached, the conventional forging method is used to continue to press down, and the flat steel is only elongated, and cannot continue to be widened. [0003] Therefore, it is necessary to provide an improved technical sol...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/08B21J1/06
CPCB21J5/00B21J5/008B21J5/08B21J1/06Y02P10/20
Inventor 李博贾余超程志伟苏超王云胜易凯华杨翔周立新雷应华
Owner DAYE SPECIAL STEEL CO LTD
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