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A kind of preparation method of deep blind hole component

A deep blind hole and component technology, applied in metal processing equipment and other directions, can solve the problem of long process and high cost, and achieve the effect of reducing process, avoiding uneven performance and reducing cost

Active Publication Date: 2020-11-27
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of long and high cost of the existing manufacturing technology process, the present invention uses the cross-sectional area ratio to improve the deformation distribution of each process: a short-process and low-cost preparation method for deep blind hole components, which is characterized in that:

Method used

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  • A kind of preparation method of deep blind hole component
  • A kind of preparation method of deep blind hole component
  • A kind of preparation method of deep blind hole component

Examples

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Effect test

Embodiment example 1

[0028] Taking the inner and outer diameters of a forging of a deep blind hole component as φ184mm and φ256mm as an example, the component is made of high-strength steel 30CrMnSiNi2A, and the tensile strength is required to be 1500MPa. Complete the modified forging process within one fire time, and then process the solid forging billet to obtain the finished component, the actual material utilization rate is less than 50%; after adopting the present invention, the material diameter evolution at each stage is as follows figure 1 shown. Through this invention, the material utilization rate of the deep blind hole shell reaches 75%, the heating times of the forming process are shortened to 2 times, the processing cycle is 70% of the original preparation process, and the tensile strength of each part of the component along the length direction is 1550MPa above.

Embodiment example 2

[0030] Taking the inner and outer diameters of a forging of a deep blind hole component as φ145mm and φ160mm as an example, the material of this component is titanium alloy TC4, and the required tensile strength is 880MPa. into rods; and then prepared into forgings by extrusion, the actual material utilization rate reached 70%, which greatly affected the uniformity of mechanical properties, and the vertical and horizontal mechanical properties differ by more than 15%; after adopting the present invention, the materials at various stages The diameter evolves as figure 2 shown. Through this invention, the material utilization rate of the deep blind hole shell reaches 75%, the heating times of the forming process are shortened to 2 times, the entire processing cycle is less than 60% of the original process, and the tensile strength of each part of the component along the length direction Above 900MPa.

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Abstract

The invention discloses a preparation method of a deep blind hole component, and particularly relates to a preparation whole process from ingot casting forging to final forming. The preparation methodcomprises the steps that an ingot casting is upset and drawn out to obtain a forging blank, the forging blank is turned, pre-forming and final forming are carried out to obtain a final forging piece,and the deformation of each process is distributed from the structural characteristics of a deep blind hole. Compared with a traditional preparation process of the deep blind hole component, the preparation method has the characteristics of being short in preparation process, saving raw materials and being uniform in performance.

Description

technical field [0001] The invention belongs to the field of metal material processing and forming, and in particular relates to a short-flow and low-cost preparation method of deep blind hole components. Background technique [0002] Deep blind hole components are a key core component in the fields of aerospace, navigation and weapons. With the development of equipment, the demand for deep blind hole components is increasing. The existing preparation techniques for partial deep blind hole components mainly include the following types. One is to use free forging to prepare solid forging billets in more than three fires, and then use machining to prepare finished components. Although this process is short, it causes a lot of waste of raw materials and a sharp increase in machining costs; The second is to first use multi-directional forging to forge the ingot, then use the extrusion process to prepare the forging billet, and then prepare the deep blind hole forging by reverse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J5/10
CPCB21J5/002B21J5/10
Inventor 林军陈文康凤黄树海夏祥生吴洋胡传凯陈强
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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