Forming technology for nose body of rifle

Abstract

The invention discloses a forming technology for a nose body of a rifle. The technology comprises the following processing steps: (a) blanking, wherein round bar materials are selected; (b) heating, wherein the round bar materials are heated to 1150-1250 DEG C; (c) heading, wherein head gathering material heading of the heated round bar materials is performed on an electrothermal upsetting machine to form blanks; (d) extrusion forming, wherein the blanks are put into a forming mold for extrusion forming so as to form forgings; (e) edge cutting, wherein the forgings are put into an edge cutting mold to perform the edge cutting so as to obtain the forgings of the nose body. Through the adoption of the forming technology for the nose body of the rifle, disclosed by the invention, the surface quality and the size consistency of the forgings are improved, the surplus quantity of the forgings is small, the unilateral surplus quantity is decreased within 1mm from 2mm, the utilization rate of materials is increased to 96% from 82% and is substantially increased, and the processing noise of the nose body is effectively reduced.

Description

technical field [0001] The invention relates to a firearm, in particular to a forming process for a machine head body of a rifle. Background technique [0002] As an important part of special products such as rifles, the machine head is responsible for the firing and ejection of bullets during shooting under the action of heat energy. When working, it is in a state of variable speed movement (8m / s~2.5m / s). To withstand complex alternating loads, the strength and rigidity of the material are required to be high. [0003] The nose body is usually made of 25Cr2Ni4WA alloy steel material, which is mainly used in domestic ordnance industry products. Brittle transition temperature and notch sensitivity, high high temperature transient tensile and creep strength. [0004] The existing rifle nose body forming process mainly adopts the open die forging process, and its process flow is: blanking→heating→pre-forging→final forging→edge trimming→correction, the process has a large meta...

AI Technical Summary

Problems solved by technology

[0004] The existing rifle nose body forming process mainly adopts the open die forging process, and its process flow is: blanking→heating→pre-forging→final forging→edge trimming→correction, the process has a large metal consumption due to flashing, and the forging allowance Large, unilateral margin is 2mm, low material utilization rate, due to high-speed hammer forging, high working noise and high labor intensity

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