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Composite forming method for thin-wall special-shaped part

A technology for composite forming and special-shaped parts, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve problems such as difficult realization and complicated rolling forming process, reduce pressure, solve scratches or tears, improve The effect of product quality

Active Publication Date: 2021-06-01
西安西材三川智能制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, roll forming technology has certain limitations. It is easy to realize for general thick metal plate parts, but for thin-walled special-shaped parts, the roll forming process is more complicated and difficult to realize.

Method used

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  • Composite forming method for thin-wall special-shaped part
  • Composite forming method for thin-wall special-shaped part
  • Composite forming method for thin-wall special-shaped part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment includes the following steps:

[0051] Step 1. According to the target product, that is, a titanium thin-walled special-shaped part with a nominal diameter DN of 200mm and a wall thickness of 0.5mm, select the TA2 whole plate and perform water cutting to obtain a circular slab;

[0052] Step 2. Clean the oil stains and sundries on the surface of the circular slab obtained in Step 1, and coat it with a high-temperature-resistant and anti-oxidation coating with a thickness of 0.2 mm to 1.0 mm, and heat it in a heating furnace at a temperature of 200 ° C. 0.5h, then quickly lift and align, place on the first lower die 5 of the stamping die and assemble the first pressing plate 3, use the first locking member 2 to connect the first pressing plate 3, the circular slab and the first lower die The mold 5 is locked, and then the first upper mold 1 is put into the circular slab in the first press plate 3, and the punching machine is opened to drive the first uppe...

Embodiment 2

[0063] This embodiment includes the following steps:

[0064] Step 1. According to the target product, that is, a titanium thin-walled special-shaped part with a nominal diameter DN of 300mm and a wall thickness of 3mm, select a titanium whole plate and perform water cutting to obtain a circular slab;

[0065] Step 2. Clean the oil stains and sundries on the surface of the round slab obtained in Step 1, and coat it with a high-temperature resistant and anti-oxidation coating with a thickness of 0.2 mm to 1.0 mm, and heat it in a heating furnace at a temperature of 600 ° C. 1h, then quickly lift and align, place on the first lower die 5 of the stamping die and assemble the first pressing plate 3, use the first locking member 2 to connect the first pressing plate 3, the circular slab and the first lower die 5 lock, then put the first upper die 1 into the circular slab in the first press plate 3, start the punching machine to drive the first upper die 1 to perform the first hot s...

Embodiment 3

[0076] This embodiment includes the following steps:

[0077] Step 1. According to the target product, that is, a stainless steel thin-walled special-shaped part with a nominal diameter DN of 100mm and a wall thickness of 0.5mm, select the whole stainless steel plate and cut it to obtain a circular slab;

[0078] Step 2. Clean the oil stains and sundries on the surface of the round slab obtained in Step 1, place it in a heating furnace and heat it for 1 hour at a temperature of 200°C, then quickly lift and align it, and place it in the stamping die. On the first lower mold 5 and assemble the first pressure plate 3, use the first locking member 2 to lock the first pressure plate 3, the circular slab and the first lower mold 5, and then put the first upper mold 1 into the first At the circular slab in the pressing plate 3, start the stamping machine to drive the first upper die 1 to perform the first hot stamping on the circular slab, and form the first concave platform on the c...

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Abstract

The invention discloses a composite forming method for a thin-wall special-shaped part. The method comprises the following steps that firstly, a plate is selected according to a target thin-wall special-shaped part and is cut to obtain a round plate blank; secondly, the round plate blank is subjected to first-time hot stamping to obtain a first stamping part; thirdly, the first stamping part is subjected to second-time hot stamping to obtain a second stamping part; fourthly, the second stamping part is trimmed through numerical control machining to obtain a semi-finished product; fifthly, the semi-finished product is subjected to first-time rolling flanging to obtain a first rolling part; sixthly, the first rolling part is subjected to second-time rolling flanging to obtain a second rolling part; and seventhly, the second rolling part is subjected to third-time rolling flanging to obtain the thin-wall special-shaped part. According to the method, stamping and rolling are combined, work hardening and stress concentration are reduced or eliminated through multi-die multi-time hot stamping and multi-die multi-time rolling flanging, it is guaranteed that the hot stamping and rolling forming process is completed, meanwhile, the defects such as bumps, wrinkles or snap are reduced or eliminated, the forming precision is improved, the product quality of the thin-wall special-shaped part is improved, and the forming period is shortened.

Description

technical field [0001] The invention belongs to the technical field of molding, and in particular relates to a composite molding method for thin-walled special-shaped parts. Background technique [0002] It is not only difficult to guarantee the quality of the product by using the traditional molding method to prepare thin-walled special-shaped parts, but also the cost is high, which is not conducive to mass production. Using the stamping process can produce thin-walled special-shaped parts with high quality, which saves time and effort compared with sintering and machining processes. [0003] The object of the stamping process is metal. The process essentially uses the plastic deformation of the metal, and also uses the mold and stamping equipment to exert pressure on the sheet, so that the sheet is separated into a specified shape or plastically deformed to obtain a conforming shape or The parts prepared by this process are called stamping parts. The surface quality of t...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/16B21D35/00B23P15/00
CPCB21D37/10B21D37/16B21D35/002B23P15/00
Inventor 王丽朱亮杨华李格妮王鹏飞黄张洪李军刘利
Owner 西安西材三川智能制造有限公司
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