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Large-caliber hard alloy drawing mould

A hard alloy and drawing die technology, applied in the field of alloy manufacturing, can solve the problems of fast wear and short service life of large-diameter cold draft die cores, and achieve the effects of long service life, improved service life and high hardness

Inactive Publication Date: 2016-11-09
LIUZHOU CITY TONGJIN AUTOMOBILE PARTS MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a large-caliber cemented carbide drawing die, which can solve the problems of fast core wear and short service life of the current large-diameter cold drawing die

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: as Figure 1~Figure 2 As shown, this large-diameter hard alloy drawing die includes a mold base 1 and a mold core 2 set in the mold base 1. The mold core 2 is made of hard alloy, and the mold base 1 is made of high-speed steel; The core 2 is a cylinder with a through hole in the middle, and the through hole in the middle is composed of the inlet section 3 of the truncated cone, the sizing section 4 of the cylinder and the outlet section 5 of the truncated cone. The outer diameter dimension A of the mold core 2 is 640mm, and its thickness dimension G is 110 mm; the large end dimension B of the conical inlet section 3 is 590 mm, and the height dimension G of the truncated cone is 60 mm; the outer diameter dimension C of the cylindrical sizing section 4 is 550 mm, and its height dimension F is 20 mm; The large end dimension of the outlet section 5 of the truncated cone is 560 mm.

Embodiment 2

[0014] Embodiment 2: as Figure 1~Figure 2 As shown, for this large-diameter cemented carbide drawing die, the outer diameter dimension A of the core 2 is 680 mm, and its thickness dimension G is 130 mm; the large end dimension B of the conical inlet section 3 is 610 mm, and the height of the truncated cone is The dimension G is 70 mm; the outer diameter C of the cylindrical sizing section 4 is 560 mm, and its height F is 30 mm; the large end dimension of the truncated conical outlet section 5 is 580 mm, and the rest are the same as in the first embodiment.

Embodiment 3

[0015] Embodiment 3: as Figure 1~Figure 2 As shown, for this large-diameter cemented carbide drawing die, the outer diameter dimension A of the core 2 is 660 mm, and its thickness dimension G is 120 mm; the large end dimension B of the conical inlet section 3 is 600 mm, and the height of the truncated cone is The dimension G is 65 mm; the outer diameter dimension C of the cylindrical sizing section 4 is 555 mm, and its height dimension F is 25 mm; the large end dimension of the truncated conical outlet section 5 is 570 mm, and the rest are the same as in the first embodiment.

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Abstract

The invention discloses a large-caliber hard alloy drawing mould, and relates to the technical field of alloy manufacturing. The large-caliber hard alloy drawing mould comprises a mould base and a mould core which is sleeved by the mould base, wherein the mould core is a cylinder with a through hole in middle; and the through hole in middle consists of a circular truncated cone inlet section, a cylindrical sizing section and a circular truncated cone outlet section. The large-caliber hard alloy drawing mould can solves the problems that wear of the mould core of a current large-caliber cold-drawing mould is quick, and the service life of the current large-caliber cold-drawing mould is short.

Description

technical field [0001] The invention relates to the technical field of alloy manufacturing, in particular to a mold core of a larger-sized drawing die. Background technique [0002] Large-diameter thick-walled steel pipes generally refer to steel pipes with an outer diameter greater than 325 mm and a wall thickness of more than 20 mm. Due to the large diameter of large-diameter steel pipes, most of them were made by hot-rolling, hot-rolling and single-sided welding in the past. There are one or two welds on the pipe wall of the steel pipe, which not only affects the appearance of the steel pipe, but also has a certain impact on the maximum pressure borne by the steel pipe, and the manufacturing cost is also high; in recent years, in view of the shortcomings of the hot-rolled steel pipe, More and more large-diameter steel pipes are produced by cold-drawing technology. Cold-drawn steel pipes are whole steel pipes produced by drawing, extrusion, and perforation. The round, squ...

Claims

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Application Information

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IPC IPC(8): B21C25/02
CPCB21C25/025
Inventor 马深同
Owner LIUZHOU CITY TONGJIN AUTOMOBILE PARTS MFG CO LTD
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