CN105244119A - Preparation process of copper-cladding aluminum composite V-shaped wire - Google Patents

Abstract

The invention provides a preparation process of a copper-cladding aluminum composite V-shaped wire. The process comprises the following steps of (1) rolling, wherein 11 passes of groove rolling is carried, out, the rolling speed is 10-40 meters per minute, horizontal rolling and vertical rolling are sequentially circulated, the deformation quantity per pass is 10-40%, the total deformation quantity of the rolling section is 70-80%, and the size is approximate to 20 millimeters by 15 millimeters; (2) drawing, the drawing speed is controlled to be 2-35 meters per minute, four passes of drawing are achieved, the section size after the first pass is about 20 millimeters by 15 millimeters, the area reduction quantity of three subsequent passes is controlled to be 15-25%, and the total area reduction quantity of the four passes is controlled to be 40-50%; (3) horizontally rolling, one pass of horizontal rolling is carried out, the rolling speed is controlled to be 10-40 meters per minute, and the down-press quantity is 1-3 millimeters; and (4) carrying out irregular (V shape) drawing, wherein the drawing speed is controlled to be 2-35 meters per minute, and the area reduction rate of a single pass is 10-20% until the qualified size is achieved. The copper-cladding aluminum composite V-shaped wire prepared according to the method has the advantages that the thickness of a copper layer is adjustable, the bonding strength is high, the surface is clean, the size accuracy is high, the mechanical property is confirm to the requirement, and the process efficiency is high.

Description

A kind of preparation technology of copper cover aluminum compound V-type line

Technical field

The invention belongs to double metallic composite material field, relate in particular to a kind of preparation technology of copper cover aluminum compound V-type line.

Background technology

The main production process of cuprum-cladding-aluminium composite wire has rolling by crimping, tube-weld cladding technique, hydrostatic extrusion method etc. both at home and abroad at present.The Problems existing of tube-weld cladding technique and rolling by crimping is: production procedure length, complex process, cost are high, product layers of copper is thin, and bond strength is low; Particularly some are had to the conductor material of special cross-section shape, two kinds of methods are all difficult to the composite special-shaped wire rod that production section configuration is not rounded (as flat, special-shaped etc.).It is large to there is equipment investment in hydrostatic extrusion method, complex process, and production efficiency is low waits deficiency.The invention provides a kind of preparation method of copper cover aluminum compound V-type line of efficient, high finished product rate.

Summary of the invention

The object of the invention is, for the deficiency solved in above-mentioned background technology, to provide a kind of technique can preparing high-performance copper alclad compound V-type line.

Technical scheme of the present invention is achieved in that a kind of preparation technology of copper cover aluminum compound V-type line, first copper cover aluminum complex is combined into by core aluminium and coating layer copper, its blank adopts horizontal casting direct combination manufacturing process to make, coated copper layer area ratio is 15 ~ 50%, comprises the steps:

(1), rolling: the cogging method being band corner square blank for cross section is: blank length of side 43-45mm, groove rolling 11 passage, mill speed 10 ~ 40m/min, flat-rolled, rolling on edge circulates successively, every time deflection 10 ~ 40%, rolling cross section total deformation is 70 ~ 80%, and size is close to 20mm × 15mm;

(2), drawing: drawing speed controls to 2 ~ 35m/min, drawing four passages, after first passes of drawing, sectional dimension is about 20mm × 15mm, and three passage area reduction amounts control to 15 ~ 25% subsequently, and the total area reduction amount of four passages controls to 40 ~ 50%;

(3), flat-rolled: flat-rolled a time, mill speed is 10 ~ 40m/min, and drafts 1 ~ 3mm rolls rear size, slightly larger than special-shaped drawing mould size;

(4), abnormity (V-type) drawing: drawing speed controls to 2 ~ 35m/min, and single pass area reduction is 10 ~ 20%, to qualified size.

Preferably, comprise the steps:

(1), rolling: be the foursquare blank cogging method with corner for cross section: billet size is about 44mm × 44mm, with groove rolling, mill speed scope is 10 ~ 40m/min, previous three passes, flat-rolled, rolling on edge, flat-rolled successively, drafts is 20 ~ 35%; Middle three passages are respectively rolling on edge, flat-rolled, the rolling on edge that deflection is 5 ~ 20%; Carry out flat-rolled, rolling on edge successively subsequently, drafts is 25 ~ 40% to close to 20mm × 15mm size;

(2), drawing: drawing speed controls to 2 ~ 35m/min, first drawing makes width reduction amount control to 3 ~ 6mm, reduced down in thickness amount 2 ~ 4mm, and after drawing, size is about 20mm × 15mm, second drawing reduced down in thickness amount controls to 2 ~ 4mm, and width reduction amount controls to 1 ~ 3mm; Proceed two passes of drawing, width decrement is 2 ~ 4mm, and thickness decrement is 1 ~ 3mm, and after drawing, section deformation amount is 35 ~ 50%;

(3), flat-rolled: mill speed is 10 ~ 40m/min, and drafts 1 ~ 3mm rolls rear size, slightly larger than special-shaped drawing mould size;

(4), abnormity (V-type) drawing: drawing speed controls to 2 ~ 35m/min, width decrement 2 ~ 4mm, and thickness decrement 1 ~ 3mm, to qualified size.

The invention has the beneficial effects as follows: based on horizontal casting direct combination forming technology, designed, designed drawing die pass and join mould, technological parameter, use special-shaped drawing mould, solve other copper-coated aluminium composite material technologies of preparing and be difficult to processing V-shaped wire rod and a size-constrained difficult problem, the copper layer thickness of copper cover aluminum compound V-type wire rod prepared by the present invention is adjustable, bond strength is high, any surface finish, dimensional accuracy is high, mechanical property meets the requirements, and process efficiency is high, generalization is strong, by appropriate design technological process, drawing mould, rolling groove, the special-shaped copper alclad compound section of other cross sectional shapes can be prepared.

Accompanying drawing explanation

Fig. 1 is the present invention's special-shaped drawing mould schematic diagram used;

Fig. 2 is that the A-A of Fig. 1 of the present invention is to generalized section.

Embodiment

In order to Comprehension and Implementation better, below in conjunction with accompanying drawing, the invention will be further described:

A preparation technology for copper cover aluminum compound V-type line, is first combined into copper cover aluminum complex by core aluminium and coating layer copper, and its blank adopts horizontal casting direct combination manufacturing process to make, and coated copper layer area ratio is about 30%, comprises the steps:

(1), rolling: be the foursquare blank cogging method with corner for cross section: billet size is about 44mm × 44mm, and with groove rolling, mill speed is about 40m/min, previous three passes, successively flat-rolled, rolling on edge, flat-rolled, and drafts is about 30%; Middle three passages are rolling on edge, flat-rolled, the rolling on edge of deflection equal about 15%; Carry out flat-rolled, rolling on edge successively subsequently, drafts is about 40% to close to 20mm × 15mm size;

(2), drawing: drawing speed is about 35m/min, and first drawing makes width reduction amount be about 3mm, and reduced down in thickness amount is about 2mm, and after drawing, size is about 20mm × 15mm, and second drawing reduced down in thickness amount controls to about 2mm, and width reduction amount controls to about 2mm; Proceed two passes of drawing, width decrement is about 4mm, and thickness decrement is about 3mm, and after drawing, section deformation amount is about 40%;

(3), flat-rolled: mill speed is about 40m/min, and drafts is about 1mm, and adjustment copper layer thickness, rolls rear size and be about 16mm × 10mm;

(4), abnormity (V-type) drawing: drawing speed is about 35m/min, and width decrement is about 2mm, and thickness decrement is about 2mm, to qualified size.

Claims (2)

1. the preparation technology of a copper cover aluminum compound V-type line, first copper cover aluminum complex is combined into by core aluminium and coating layer copper, its blank adopts horizontal casting direct combination manufacturing process to make, and coated copper layer area ratio is 15 ~ 50%, it is characterized in that comprising the steps:

(1), rolling: the cogging method being band corner square blank for cross section is: blank length of side 43-45mm, groove rolling 11 passage, mill speed 10 ~ 40m/min, flat-rolled, rolling on edge circulates successively, every time deflection 10 ~ 40%, rolling cross section total deformation is 70 ~ 80%, and size is close to 20mm × 15mm;

(2), drawing: drawing speed controls to 2 ~ 35m/min, drawing four passages, after first passes of drawing, sectional dimension is about 20mm × 15mm, and three passage area reduction amounts control to 15 ~ 25% subsequently, and the total area reduction amount of four passages controls to 40 ~ 50%;

(3), flat-rolled: flat-rolled a time, mill speed is 10 ~ 40m/min, drafts 1 ~ 3mm, rolls rear size and is about 23mm × 16mm;

(4), abnormity (V-type) drawing: drawing speed controls to 2 ~ 35m/min, and single pass area reduction is 10 ~ 20%, to qualified size.

2. the preparation technology of a kind of copper cover aluminum compound V-type line as claimed in claim 1, is characterized in that comprising the steps:

(1), rolling: be the foursquare blank cogging method with corner for cross section: billet size is about 44mm × 44mm, with groove rolling, mill speed scope is 10 ~ 40m/min, previous three passes, flat-rolled, rolling on edge, flat-rolled successively, drafts is 20 ~ 35%; Middle three passages are respectively rolling on edge, flat-rolled, rolling on edge, and every time deflection is 5 ~ 20%; Carry out flat-rolled, rolling on edge successively subsequently, drafts is 25 ~ 40% to close to 20mm × 15mm size;

(2), drawing: drawing speed controls to 2 ~ 35m/min, first drawing makes width reduction amount control to 3 ~ 6mm, reduced down in thickness amount 2 ~ 4mm, and after drawing, size is about 20mm × 15mm, second drawing reduced down in thickness amount controls to 2 ~ 4mm, and width reduction amount controls to 1 ~ 3mm; Proceed two passes of drawing, width decrement is 2 ~ 4mm, and thickness decrement is 1 ~ 3mm, and after drawing, section deformation amount is 35 ~ 50%;

(3), flat-rolled: mill speed is 10 ~ 40m/min, drafts 1 ~ 3mm, rolls rear size and is about 23mm × 16mm;

(4), abnormity (V-type) drawing: drawing speed controls to 2 ~ 35m/min, width decrement 2 ~ 4mm, and thickness decrement 1 ~ 3mm, to qualified size.