CN204148427U

CN204148427U - Forging mold

Info

Publication number: CN204148427U
Application number: CN201420203782.4U
Authority: CN
Inventors: 王兴民; 谭金渝
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2015-02-11
Anticipated expiration: 2024-04-24

Abstract

The utility model relates to the technology that metal material processing is shaped, and is specifically related to a kind of forging mold.Comprise inner ring (1) and outer ring (2), described inner ring (1) center is forging chamber (3), described outer ring (2) is enclosed within inner ring (1) outward, and this outer ring (2) and inner ring (1) are interference fit.The utility model beneficial effect is: adopt inside and outside two circles to combine, use bi-material, inner ring is selected to the material of high rigidity, make it have wearability, outer ring is used to the material of high tenacity, interference fit wraps inner ring, prevent breaking of inner ring, reach the effect of existing wearability flexible again.Extend the service life of forging mold.This structure successfully solves that traditional forging mold much higher hard easily breaks, the awkward present situation of the too low easy wearing and tearing of hardness.Through checking, this new construction is than original forging mold life-span upgrading more than one times.Decrease mold use integrated cost, cost performance is higher.

Description

Forging mold

Technical field

The utility model relates to the technology that metal material processing is shaped, and is specifically related to a kind of forging mold.

Background technology

Forging is that one utilizes metal forming machinery to apply pressure to metal stock, makes it produce plastic deformation to obtain the processing method with certain mechanical performance, definite shape and size forging, one of two large parts of forging and stamping (forging and punching press).Can eliminate the defects such as cast condition that metal produces in smelting process is loose by forging, optimize heterogeneous microstructure, simultaneously owing to saving complete metal streamline, the mechanical performance of forging is generally better than the foundry goods of same material.The strength member that in associated mechanical, load is high, condition of work is severe, except the sheet material of the better simply available rolling of shape, section bar or weldment, adopts forging more.The crystallization temperature of steel is about 727 DEG C, but generally adopt 800 DEG C as dividing line, higher than 800 DEG C be forge hot; Between 300 ~ 800 DEG C, be called warm forging or half forge hot, that at room temperature carries out forging is called cold forging.

Need in forging process to apply huge pressure to forging mold, to such an extent as to the inefficacy in the existing use of generally traditional forging mold is mainly wearing and tearing and breaks two kinds.In order to reduce the wearing and tearing of forging mold, just needing to improve hardness to promote wearability, in order to reduce to break, just need to improve toughness, and hardness and toughness being originally one group of intrinsic contradictions, can not get both.So all limitedly promoting hardness to ensure that wearability also has to again control high rigidity to ensure its toughness simultaneously, can only be difficult to reach both and taking into account.

Utility model content

For solving above technical problem, the utility model object is to provide a kind of not only wear-resisting, but also break-resistance, long service life forging mold, concrete technical scheme is as follows:

A kind of forging mold, comprises inner ring and outer ring, and described inner ring center is forging chamber, and described outer ring sleeve is outside inner ring, and this outer ring and inner ring are interference fit.

Adopt said structure, forging mold is divided into inside and outside two parts, inner ring uses high hardness material, for improving the wearability of forging mold, outer ring uses the material of high tenacity, breaks for reducing, the textural association of both uses material, namely ensure that wearability in turn ensure that toughness, both take into account.Effectively extend forging mold service life

Further technical scheme is that the magnitude of interference of described inner ring and outer ring is between 10/2000 to thousand/1000ths.

Further technical scheme is that top, described outer ring has annular stop step, and described inner ring top is provided with the step support portion coordinated with described annular stop step, and upper surface, described outer ring is concordant with inner ring upper surface.

Adopt said structure, in use, the upper surface of forging mold can be subject to immense pressure, step both can make inner ring better abut with outer ring, made both contacts more firm, simultaneously, add step support portion can also to make punching press contact surface be entirely the material of inner ring on top, and forging effect is better.

Further technical scheme is the thickness of described inner ring bottom is L, and the external diameter of bottom, described outer ring is R, 3%≤L/R≤8%.

Adopt said structure, with ensure use time the life-span significantly improve while inner ring can not break again.

Further technical scheme be described inner ring material hardness between HRC55 to HRC70, outer ring material hardness is between HRC38 to HRC50.

The further high-speed steel of technical scheme to be described inner ring (1) material be W6Mo5Cr4V2 or W6Mo5Cr4V2Co2 or W6Mo5Cr4V2Co5, steel bonded carbide or tungsten carbide alloy material; Described outer ring material is mould steel, the mould steel of H13, the mould steel of HD of 5CrNiMo.

The utility model beneficial effect is: adopt inside and outside two circles to combine, use bi-material, inner ring is selected to the material of high rigidity, make it have wearability, outer ring is used to the material of high tenacity, interference fit wraps inner ring, prevent breaking of inner ring, reach the effect of existing wearability flexible again.Extend the service life of forging mold.This structure successfully solves that traditional forging mold much higher hard easily breaks, the awkward present situation of the too low easy wearing and tearing of hardness.Through checking, this new construction is than original forging mold life-span upgrading more than one times.Decrease mold use integrated cost, cost performance is higher.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model one embodiment.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in Figure 1, an embodiment of the present utility model, a kind of forging mold, comprises inner ring 1 and outer ring 2, and described inner ring 1 center is forging chamber 3, and described outer ring 2 is enclosed within outside inner ring 1, and this outer ring 2 and inner ring 1 are interference fit.Forging mold is divided into inside and outside two parts, inner ring uses high hardness material, for improving the wearability of forging mold, outer ring uses the material of high tenacity, breaks for reducing, the textural association of both uses material, namely ensure that wearability in turn ensure that toughness, both take into account.The magnitude of interference of described inner ring 1 and outer ring 2, between 10/2000 to thousand/1000ths, can be 2/1000ths, 4/1000ths, 5/1000ths, 8/1000ths, 10/1000ths etc.

Top, described outer ring 2 has annular stop step, and described inner ring 1 top is provided with the step support portion 4 coordinated with described annular stop step, and upper surface, described outer ring 2 is concordant with inner ring 1 upper surface.In use, the upper surface of forging mold can be subject to immense pressure, and step both can make inner ring 1 better abut with outer ring 2, make both contacts more firm, meanwhile, add step support portion can also to make punching press contact surface be entirely the material of inner ring on top, and forging effect is better.The thickness of described inner ring 1 bottom is L, and the external diameter of bottom, described outer ring 2 is R, 3%≤L/R≤8%.Described inner ring 1 material hardness, between HRC55 to HRC70, can be HRC55, HRC60, HRC65, HRC70 etc., and outer ring 2 material hardness, between HRC38 to HRC50, can be HRC38, HRC40, HRC45, HRC50.Described inner ring 1 material is the high-speed steel of W6Mo5Cr4V2 or W6Mo5Cr4V2Co2 or W6Mo5Cr4V2Co5, steel bonded carbide or tungsten carbide (WC) alloy material; Described outer ring 2 material is mould steel, the mould steel of H13, the mould steel of High Ductility (HD) of 5CrNiMo.Overcoat adopts the quenching of toughness good material to reach excellent toughness when the lower hardness of relative inner sleeve ensure that use, and making can not fracture failure in forging process.This forging mold is applicable to the moulds such as cold forging, warm forging and forge hot.

Claims

1. a forging mold, comprise inner ring (1) and outer ring (2), described inner ring (1) center is forging chamber (3), described outer ring (2) is enclosed within inner ring (1) outward, and this outer ring (2) and inner ring (1) are interference fit, the material of described inner ring (1) is high hardness material, and the material of described outer ring (2) is high-toughness material.

2. forging mold according to claim 1, is characterized in that: the magnitude of interference of described inner ring (1) and outer ring (2) is between 10/2000 to thousand/1000ths.

3. forging mold according to claim 1 or 2, it is characterized in that, described outer ring (2) top has annular stop step, described inner ring (1) top is provided with the step support portion (4) coordinated with described annular stop step, and described outer ring (2) upper surface is concordant with inner ring (1) upper surface.

4. forging mold according to claim 3, it is characterized in that, the thickness of described inner ring (1) bottom is L, and the external diameter of described outer ring (2) bottom is R, 3%≤L/R≤8%.

5. forging mold according to claim 3, it is characterized in that, described inner ring (1) material hardness is between HRC55 to HRC70, and outer ring (2) material hardness is between HRC38 to HRC50.

6. forging mold according to claim 3, is characterized in that, described inner ring (1) material is the high-speed steel of W6Mo5Cr4V2 or W6Mo5Cr4V2Co2 or W6Mo5Cr4V2Co5, steel bonded carbide or tungsten carbide alloy material; Described outer ring (2) material is mould steel, the mould steel of H13, the mould steel of HD of 5CrNiMo.