Ball flat steel double hole die extrusion molding method

A technology of extrusion molding and flat bulb steel, which is applied in the direction of metal extrusion, metal extrusion dies, metal containers to be extruded, etc., can solve the problem of different performance, multiple deformation passes, uneven performance of bulb flat steel, etc. problem, to achieve the effect of improving the lubrication effect and reducing the bending degree

Active Publication Date: 2018-08-21
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The bulb flat steel produced by the hot rolling process has the problem of uneven performance in different regions (the perf...

Method used

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  • Ball flat steel double hole die extrusion molding method
  • Ball flat steel double hole die extrusion molding method
  • Ball flat steel double hole die extrusion molding method

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Embodiment 1

[0060] The invention provides a double-hole mold extrusion molding method for spherical flat steel, which specifically includes the following steps:

[0061] (1) Material: austenitic stainless steel

[0062] Outer diameter: Φ222 mm, outer diameter tolerance -2~0mm

[0063] Length: 450mm

[0064] Arc angle: R35mm

[0065] Surface roughness: ≤R3.2μm

[0066] (2) Blank heating

[0067] Ring furnace heating has 1 preheating section, 3 heating sections and 1 holding section, among which the preheating section is 900±20°C, and the target temperature of the three heating sections and holding section is 950±10°C.

[0068] Induction heating has 1 heating section and 2 holding sections. The heating section has a power of 480kW and is heated to a target temperature of 1180±10°C. 220kW.

[0069] (3) Lubrication

[0070] The outer surface of the billet is lubricated by domestic Tianli Chuang GW8, the glass pad is GD19, and the inner hole of the glass pad is in the shape of a special...

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Abstract

The invention discloses a ball flat steel double hole die extrusion molding method. The hot extrusion process includes the operation procedures of mold design and production, billet processing, billetheating including annular furnace preheating plus induction furnace heating, hot extrusion and straightening. The ball flat steel double hole die extrusion molding method has the advantages that withtwo ball flat steel die holes designed on an extrusion die bearing surface, distortion or bending are reduced, extruded ball flat steel is ensured not to collide with discharge equipment facilities,and a discharge guide tube is added; an finite element simulation method is used to optimize the design of the extrusion die and extrusion process, and extrusion load is predicted; ball flat steel manufactured by the above-mentioned method satisfies the surface and size requirements of 'hot-rolled ball flat steel' of GB/T 9945-2001, and a more reasonable hot extrusion method in addition to the hotrolling method is explored.

Description

technical field [0001] The invention relates to a double-hole mold extrusion molding method for flat bulb steel, in particular to a double-hole mold hot extrusion process for austenitic stainless steel flat bulb, and belongs to the technical field of stainless steel profile processing. Background technique [0002] Bulb flat steel is a profile mainly used in the field of shipbuilding. Bulb flat steel with the same thickness and material as the connected plate is usually used as a bone (also called tendon or keel). [0003] Yangzhou Chengde Steel Tube Co., Ltd. applied for a Chinese invention patent "New Process for Bulb Flat Steel Production" (application number 200810019252.3) and a Chinese invention patent "A Production Process for Bulb Flat Steel" (application number 200610134469. X) All adopt the rolling process method to manufacture bulbous flat steel. [0004] Jiangyou Great Wall Special Steel Co., Ltd., a subsidiary of Ansteel Group, mentioned the process of producin...

Claims

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Application Information

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IPC IPC(8): B21C35/02B21C35/03B21C25/02B21C23/32B21C27/00
CPCB21C23/32B21C25/02B21C27/00B21C35/02B21C35/03
Inventor 程逸明拓雷锋康喜唐侯楠李强段政均李树伟
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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