Forming method for pultrusion machining of hemispherical parts
A forming method and part technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of low forming efficiency, achieve the effects of improving material utilization, reducing the risk of stretch cracking, and improving processing and forming efficiency
Pending Publication Date: 2022-07-05
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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Problems solved by technology
[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a molding method for pultrusion processing of hemispherical parts, which solves the problem of low molding efficiency in the processing method of hemispherical parts in the prior art
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Embodiment 2
[0051]Embodiment 2 is different from Embodiment 1 in that the lower die base 1 includes a detachable base 11 and a lower die cylinder 12 arranged on the base 11 , the base 11 is provided with a cylinder, and the lower die cylinder 12 fixed in the cylinder. The pressing space is set in the lower die cylinder 12 , and the limiting groove is set on the upper end of the lower die cylinder 12 and is concentric with the lower die cylinder 12 .
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Abstract
The invention discloses a forming method for pultrusion machining of hemispherical parts. The forming method comprises the steps that a mold is assembled; pre-coating a high-temperature lubricant on the surface of the blank; performing heat treatment on the blank; the surface of the stress contact part of the mold is coated with a lubricant and a thermal insulation coating; and carrying out pultrusion on the blank. A stretching and extruding mixed forming mode is adopted, and in the pultrusion process, plate materials are not limited by edge pressing; the pultrusion process is carried out in a hot state, so that the deformation resistance is reduced, and the processing and forming efficiency is improved; after stretching and forming, the machining allowance is less, so that the consumption of raw materials is greatly reduced; the die and the workpiece are coated with a high-temperature lubricant and a heat preservation coating respectively so as to protect part forming, prolong the service life of the die and facilitate semi-spherical blank material returning; the deformation resistance generated during hemisphere forming can be effectively reduced, and the risk of forming cracking of the precipitation hardening stainless steel sheet is reduced.
Description
technical field [0001] The invention relates to the technical field of hemispherical parts processing, in particular to a forming method for pultrusion processing of hemispherical parts. Background technique [0002] Commonly used hemispherical parts processing methods include machining, casting, die forging and drawing. The machining process is simple, but the material utilization rate is low, the processing efficiency is low, and the cost consumption is high. Casting is prone to defects such as blisters and pores, and it is prone to component segregation in the metallurgical process, which is not suitable for high-pressure gas cylinders. Die forging has a complex process, many parameters affecting the processing and forming, and the processing energy consumption is large. Stretch forming has the advantage of low material consumption, but the processing technology is difficult, and the precision of the drawing die is high. In addition, there is a problem that there is a ...
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IPC IPC(8): B21D22/20B21D37/16B21D37/18B23P15/00
CPCB21D22/201B21D37/16B21D37/18B23P15/00Y02P70/10
Inventor 靳少龙刘伟鲁国超姜银松邵真贵国宁韩洪喜刘全顺叶卫林高蒙
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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