Machining method for effectively improving quality of large forging

A processing method and technology for large forgings, applied in the field of smelting and forging, can solve the problems of waste of ingot materials, inclusion defects of large ingot nozzles, etc., and achieve the effect of reducing forging procedures, reducing processing costs and improving quality

Active Publication Date: 2014-04-02
TIANJIN HEAVY EQUIP ENG RES +1
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  • Claims
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Problems solved by technology

The manufacturing process of large-scale forgings has not undergone major changes for decades. Due to the existence of various ingot defects in different degrees that cannot be eliminated, especially the inclusion defe

Method used

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  • Machining method for effectively improving quality of large forging
  • Machining method for effectively improving quality of large forging

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The purpose of the present invention is to provide a practical and efficient forging processing method, which can effectively improve the processing quality of large forgings. The steps are as follows:

[0026] 1) First press figure 1 Ingot shown. According to the characteristics of the casting, after the casting is completed, a riser 2 will be left on the top of the ingot body 1, and a nozzle 3 will be left at the bottom. Note that the average diameter of the ingot body is D, and the average diameter of the riser is D 冒 , the average nozzle diameter is D 水 , generally speaking, D 冒 ≥D≥D 水 .

[0027] In the method of the present invention, in order to reduce material waste as much as possible and achieve better forging effect, a nozzle manipulator or a nozzle jaw 4 that can be clamped by a forging sleeve is designed at the beginning of ca...

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Abstract

The invention discloses a machining method for effectively improving quality of a large forging, belongs to the technical field of smelting and forging, and belongs to an improvement on the smelting and forging of the large forging. The method comprises the steps of firstly, in the smelting process, prefabricating a water gap jaw in the water gap end of an ingot, so the distribution state of water gap deposition cones is changed and the metallurgical quality of the ingot is improved; secondly, adopting riser-free forging in the forging loop and changing the fiber direction of the forging, so the forging quality of the ingot water gap is effectively improved. Through the improvement on the smelting and forging, the hot-working quality of the large forging is effectively improved.

Description

technical field [0001] The invention relates to the technical field of smelting and forging, in particular to a processing and manufacturing method for effectively improving the quality of large forgings. Background technique [0002] Large forgings occupy an important position in the national economy and are indispensable and important components in various fields such as electric power, metallurgy, petrochemical, aviation, aerospace, marine, mining, machinery, etc. The manufacturing process of large-scale forgings has not undergone major changes for decades. Due to the existence of various ingot defects in different degrees that cannot be eliminated, especially the inclusion defects of large-scale ingot nozzles, the forging process has always relied on the traditional press Ingot percentage cutting method, so as not to enter the forging body, which will inevitably cause waste of ingot material. Improving the utilization rate of ingots and reducing capital loss has been th...

Claims

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Application Information

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IPC IPC(8): B21J5/06B21J1/00B22D7/06
Inventor 曹志远高建军季雪张建国牛广彬
Owner TIANJIN HEAVY EQUIP ENG RES
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