A flat bar manufacturing method based on multilayer composite pipe

A multi-layer composite and manufacturing method technology, applied in metal rolling and other directions, can solve the problems of affecting the surface quality of products, reducing the yield of flat bars, and rapidly deforming the metal at the edge, to ensure dimensional uniformity, simple structure, The effect of reducing deformation resistance

Active Publication Date: 2020-12-29
宝鸡特钢钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the ratio of the cross-sectional width to thickness of the composite flat bar is greater than or equal to 5, the material cross-section is large, the wall thickness is small, and the use rigidity is low. In order to improve the rigidity of this type of specification, carbon steel rods are generally used as the inner core material in composite materials. In the hot rolling deformation of multi-layer metals, the ratio of cross-sectional width to thickness is greater than or equal to 5, due to the edge effect and the principle of least resistance, the middle metal flows slowly and the edge metal deforms quickly, causing the upper and lower wide surfaces to form convex surfaces. Cracks on the part of the small face seriously affect the surface quality of the product, and also reduce the yield of the flat bar

Method used

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  • A flat bar manufacturing method based on multilayer composite pipe
  • A flat bar manufacturing method based on multilayer composite pipe
  • A flat bar manufacturing method based on multilayer composite pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for manufacturing a flat bar based on a multilayer composite pipe, which is specifically implemented according to the following steps:

[0039] Step 1. Select the outer pipe, middle pipe and inner pipe with different inner diameters, and clean and dry the inner and outer surfaces of the outer pipe, middle pipe and inner pipe respectively to obtain clean inner metal pipe 1, middle metal pipe 2 and The outer metal tube 3, the inner metal tube 1, the middle metal tube 2 and the outer metal tube 3 have no oil stains, oxidized color or metal particles and other non-metallic objects except the tube body, and the outer diameter of the inner metal tube 1 is relatively small. The inner diameter of the outer metal tube 3 is 0.2mm smaller, and the outer diameter of the inner metal tube 1 is 0.1mm smaller than the outer diameter of the middle metal tube 2;

[0040] Step 2: Assemble the middle metal tube 2 outside the inner metal tube 1, and then as...

Embodiment 2

[0048] This embodiment provides a method for manufacturing a flat bar based on a multilayer composite pipe, which is specifically implemented according to the following steps:

[0049] Step 1. Select the outer pipe, middle pipe and inner pipe with different inner diameters, and clean and dry the inner and outer surfaces of the outer pipe, middle pipe and inner pipe respectively to obtain clean inner metal pipe 1, middle metal pipe 2 and The outer metal tube 3, the inner metal tube 1, the middle metal tube 2 and the outer metal tube 3 have no oil stains, oxidized color or metal particles and other non-metallic objects except the tube body, and the outer diameter of the inner metal tube 1 is relatively small. The outer diameter of the outer metal tube 3 is 0.4 mm smaller than the outer diameter of the inner metal tube 1 by 0.4 mm;

[0050] Step 2: Assemble the middle metal tube 2 outside the inner metal tube 1, and then assemble the outer metal tube 3 outside the middle metal tube...

Embodiment 3

[0058] This embodiment provides a method for manufacturing a flat bar based on a multilayer composite pipe, which is specifically implemented according to the following steps:

[0059] Step 1. Select the outer pipe, middle pipe and inner pipe with different inner diameters, and clean and dry the inner and outer surfaces of the outer pipe, middle pipe and inner pipe respectively to obtain clean inner metal pipe 1, middle metal pipe 2 and The outer metal tube 3, the inner metal tube 1, the middle metal tube 2 and the outer metal tube 3 are free of oil stains, oxidized color or metal particles and other non-metallic objects except the tube body, and the outer diameter of the inner metal tube 1 The inner diameter of the outer metal tube 3 is 0.2 mm smaller than that of the outer metal tube 3, and the outer diameter of the inner metal tube 1 is 0.4 mm smaller than the outer diameter of the middle metal tube 2;

[0060] Step 2: Assemble the middle metal tube 2 outside the inner meta...

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Abstract

The invention discloses a method for manufacturing a flat bar material based on a multi-layer composite tube. The method is used for manufacturing the multi-layer composite tube, the method comprisesthe following steps of preparing a blank, composite blank, twisting head, stretching, hot rolling, straightening, cutting and sizing, polishing, checking and packaging. According to the multi-layer composite tube for manufacturing the flat bar, the rolling force is greatly reduced, and the deformation uniformity of the metal in the rolling process is improved. According to the method, the yield ofthe flat bar is greatly improved, the manufactured flat bar is accurate in size and good in quality, and the metal plasticity is fully exerted.

Description

technical field [0001] The invention belongs to the technical field of composite pipes, and relates to a method for manufacturing flat bars based on multilayer composite pipes. Background technique [0002] Multilayer composite materials are mostly used in metallurgical electrodes, electrolytic plating industry and electrochemical industry, as well as some materials that need to be conductive but also corrosion-resistant. When the ratio of the cross-sectional width to thickness of the composite flat bar is greater than or equal to 5, the material cross-section is large, the wall thickness is small, and the use rigidity is low. In order to improve the rigidity of this type of specification, carbon steel rods are generally used as the inner core material in composite materials. In the hot rolling deformation of multi-layer metals, the ratio of cross-sectional width to thickness is greater than or equal to 5, due to the edge effect and the principle of least resistance, the mid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04B21C1/22B21B1/18
CPCB21B1/18B21C1/22B21C37/045
Inventor 李新中刘钢
Owner 宝鸡特钢钛业股份有限公司
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