CN2134898Y

CN2134898Y - Bull block

Info

Publication number: CN2134898Y
Application number: CN 92234179
Authority: CN
Inventors: 张晨光
Original assignee: METAL PRODUCTS RESEARCH INST UNDER MINISTRY OF METALLURGICAL INDUSTRY
Current assignee: METAL PRODUCTS RESEARCH INST UNDER MINISTRY OF METALLURGICAL INDUSTRY
Priority date: 1992-09-25
Filing date: 1992-09-25
Publication date: 1993-06-02
Anticipated expiration: 2002-09-25

Abstract

The utility model provides a wire-drawing die, composed of a metal die sleeve 1, a die core 2 and a die core bore 3. The utility model is mainly characterized in that a plurality of rectangular closing grooves 4 is arranged on the outer surface of the metal die sleeve 1. Under the condition of no reducing the cooling effect, the tightening hoop function of the metal die sleeve for the die core is improved. The breaking rate of the die core is reduced. The utility model has the advantages of long service life and simple fabrication. The utility model can also rapidly transfer the heat quantity which is generated by the deformation of the metal in the process of drawing along the groove.

Description

Bull block

The utility model belongs to the drawing mould in the Steel Wire Products Industry, is applicable to that mould needs cooling in drawing process, particularly uses water-cooled metal wire rod production of articles.

Before the utility model; domestic in the metal wire rod production of articles; the water cooling of wire drawing die generally all is to put at metal pattern that to dig three sizes identical; equally distributed trapezoidal hole; make the part of core rod directly contact cooling with cooling water; weak point be core rod some directly be exposed to outside the metal die sleeve; so just greatly reduce of the lock ring protective effect of metal die sleeve to core rod; thereby the radial pressure that produces when making core rod in drawing production, bear incessantly flow of metal and breakage; the metal die sleeve also is difficult for processing, therefore is necessary to occur a kind of wire drawing die that can overcome above-mentioned deficiency.

The purpose of this utility model provides a kind of wire drawing die, and it improves the metal pattern cover of existing wire drawing die, makes under the situation that does not reduce cooling effect, improves the lock ring effect of metal die sleeve to core rod.

The purpose of this utility model can reach by following measure: it is shaped as Cylinder described wire drawing die, and the metal die sleeve is by 45 ^#Steel processes, wherein stud with the core rod in band core rod hole, the outer surface car that it is characterized in that the metal die sleeve goes out several rectangular closed grooves, spread out of by water fast along groove and take away to reach heat that flow of metal in the drawing process produces, and improved of the lock ring effect of metal die sleeve to core rod, reduced the fragmentation of core rod.

The quantity of the rectangular closed groove of the metal die sleeve in the utility model is that 1～10, its width are that 1～10mm, the degree of depth are 1/2～4/5 of metal pattern sleeve wall thickness.

The drawing of accompanying drawing is described as follows:

Fig. 1: wire drawing die front elevation.

Fig. 2: wire drawing die side cut away view.

The utility model is described in further detail below in conjunction with accompanying drawing: according to the described wire drawing die of Fig. 1, its profile is the garden column, and its metal die sleeve (1) is by 45 ^#Steel processes, the centre studs with core rod (2), core rod has nib (3), according to Fig. 2, the outer surface car of metal die sleeve (1) has several rectangular closed grooves (4), the quantity of its rectangular closed groove (4) is 1～10, and its width is 1～10mm, and the degree of depth is 1/2～4/5 of metal die sleeve (a 1) wall thickness.

The utility model compared with prior art has following advantage: because the utility model is at metal pattern cover several rectangular closed grooves of having got on the bus, in the situation that does not reduce cooling effect, improved the lock ring effect of metal die sleeve to core rod, reduced the percentage of damage of core rod, the heat that flow of metal in the drawing process produces can be spread out of fast along groove again, and the processing of metal die sleeve is simple, is convenient to promote.

Claims

1, a kind of wire drawing die mainly contains metal die sleeve (1), core rod (2), core rod hole (3) composition, it is characterized in that the outer surface car of metal die sleeve (1) goes out several rectangular closed grooves (4).

2,, it is characterized in that the quantity of the rectangular closed groove (4) on the metal die sleeve (1) is 1～10 according to the described wire drawing die of claim 1.

3, according to claim 1 or 2 described wire drawing dies, the width that it is characterized in that rectangular closed groove (4) is 1～10mm.

4, according to claim 1 or 2 described wire drawing dies, the degree of depth that it is characterized in that rectangular closed groove (4) is 1/2～4/5 of metal die sleeve (a 1) wall thickness.