CN202180169U

CN202180169U - Forging device with upper wide anvil and lower narrow anvil

Info

Publication number: CN202180169U
Application number: CN2011203066360U
Authority: CN
Inventors: 刘秀珍; 王兴旺; 高全德
Original assignee: Zhongyuan Special Steel Co Ltd
Current assignee: Zhongyuan Special Steel Co Ltd
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-04-04
Anticipated expiration: 2021-08-22

Abstract

The utility model relates to a forging device with an upper wide anvil and a lower narrow anvil, which is capable of improving forging die quality and efficiency in forging of die flat steel. A fixture with an upper wide anvil and a lower narrow anvil are mounted on an oil press, the upper anvil is wider than the lower anvil, transitional round angles are arranged at edges of the upper anvil and the lower anvil, the anvil width ratio is controlled within 0.42-0.48 before each pressing, and material width ratio is controlled within 0.83-1.20. Interior quality of forged parts can be guaranteed by means of asymmetric deformation of the upper wide anvil and the lower narrow anvil, quality of surfaces of the forged parts can be guaranteed by means of the wide contact face and the transitional round angles of the upper wide anvil, and hammer marks and angular cranking are avoided.

Description

Go up narrow anvil forging apparatus under the wide anvil

Technical field

The utility model relate to a kind of when the forging mold band steel, can improve forge module quality and efficient on narrow anvil forging apparatus under the wide anvil.

Background technology

For big specification mould band steel, realize casting skin delivery, its flaw detection and surface quality there are certain requirement.General forging with frock and forging method difficulty meet the demands, be prone to produce flaw detection and do not conform to the surface and be prone to hammering and folding.Simultaneously, adopt the light reduction forging to reduce operating efficiency with folding, increase the frequency of returning the stove heating, improved cost for avoiding hammering.

Summary of the invention

The purpose of the utility model is to overcome the deficiency that exists in the prior art and a kind of high-quality is provided, goes up narrow anvil forging apparatus under the wide anvil fast and efficiently.

For realizing above-mentioned purpose, the purpose of the utility model is achieved in that

Narrow anvil forging apparatus under a kind of wide anvil comprises that the last anvil that is installed on the hydraulic press is installed in the following anvil on the hydraulic press with the corresponding anvil of going up, and is characterized in that: go up the anvil width greater than following anvil, and excessive fillet is all fallen in the anvil edges and corners up and down.

Every time is depressed the preceding anvil width ratio W/H that goes up the height formation of anvil width and forging be controlled between 0.42 ~ 0.48, the material that the height of the width of forging and forging constituted before every time was depressed is wide to be controlled between 0.83 ~ 1.20 than B/H.

The utlity model has following good effect: the assymmetrical deformation that produces through narrow anvil under the last wide anvil makes the forging internal soundness be able to guarantee; Simultaneously; The contact-making surface roomy through last wide anvil ensured the surperficial quality of forging with excessive fillet, avoided the generation of hammering and chink to a certain extent.When moulding, can use bigger drafts, accelerate forging rhythm.Through using the utility model that mould band steel flaw detection qualification rate is reached more than 97%, the up-to-standard rate of black-skin surface has reached more than 93%.

Description of drawings

Fig. 1 is the hydraulic press of the utility model, last anvil, following anvil scheme of installation.

Fig. 2 is the forging simplified schematic diagram of narrow anvil under the last wide anvil of the utility model.

Fig. 3 is the wide ratio of the material of the utility model, anvil width ratio simplified schematic diagram.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment thereof to the further explain of the utility model patent.

Like Fig. 1,2, shown in 3, narrow anvil forging apparatus under a kind of wide anvil comprises that the last anvil that is installed on the hydraulic press is installed in the following anvil on the hydraulic press with the corresponding anvil of going up, and is characterized in that: go up the anvil width greater than following anvil, and excessive fillet is all fallen in the anvil edges and corners up and down.

Narrow anvil forging method under a kind of wide anvil is characterized in that:

At first, installing narrow anvil frock under the wide anvil on the hydraulic press, the anvil width is greater than following anvil in the assurance, and excessive fillet is all fallen in the anvil edges and corners up and down, arrives forging temperature at forging and is placed between this frock,

Secondly; Every time is depressed the preceding anvil width ratio W/H that goes up the height formation of anvil width and forging is controlled between 0.42 ~ 0.48; The material that the height of the width of forging and forging constituted before every time was depressed is wide to be controlled between 0.83 ~ 1.20 than B/H; The single face drafts is controlled in 10% ~ 13% scope, what is the single face drafts?

The 3rd, in forging process, forging is divided into four faces, first face after forging one time turns over forging

Change 180 °,, forge again one time the opposite of first face; After finishing twice, this, the adjacent surface continuation of first face is forged, after this time finishes 90 ° of forging upsets; With 180 ° of forging upsets; Forge one time on opposite to this adjacent surface, forges by that analogy, in forging process, the anvil flower is staggered simultaneously.

The forging method of narrow anvil under the wide anvil in the employing, its structure diagram are like Fig. 1, shown in 2, and last anvil width is greater than following anvil, and excessive fillet is all fallen in the anvil edges and corners up and down.Hydraulic press is loaded onto narrow anvil frock under the wide anvil, and steel ingot is placed between this frock to temperature, and anvil width ratio is controlled between 0.42 ~ 0.48; Expect that wide ratio is controlled between 0.83 ~ 1.20; The single face drafts is controlled in 10% ~ 13% scope, simultaneously, adopts 180 °; The 90 ° of upsets in back are noted the anvil flower is staggered.

1 is to go up wide anvil among Fig. 1,2, and 2 are narrow anvil down, LI＞L2,3 be forging, 4 be about anvil edges and corners rounding off.3 are placed between 1 and 2, and press passes to anvil with power, with 3 forging moldings.Will satisfy anvil width ratio in the forging process between 0.42 ~ 0.48, expect wide ratio between 0.83 ~ 1.20, the single face drafts adopts 180 ° of-90 ° of upsets, wrong anvil simultaneously in 10% ~ 13% scope.On in the pulling process, utilizing under the wide anvil assymmetrical deformation of narrow anvil the blank middle part is in the state that utilizes of pressing, by rational anvil width ratio and the wide ratio of material, can realize that the blank center do not have laterally and axial tension stress, therefore reached forging effect preferably.In forming process by the excessive fillet of hammering block, with the hammering of die surface with folding be reduced to minimum.

Claims

1. go up narrow anvil forging apparatus under the wide anvil for one kind, comprise that the last anvil that is installed on the hydraulic press is installed in the following anvil on the hydraulic press with the corresponding anvil of going up, and is characterized in that: go up the anvil width greater than following anvil, and excessive fillet is all fallen in the anvil edges and corners up and down.

2. narrow anvil forging apparatus under the wide anvil according to claim 1; It is characterized in that: the anvil width ratio W/H that goes up the height formation of anvil width and forging before every time is depressed is controlled between 0.42 ~ 0.48, and the material that the height of the width of forging and forging constituted before every time was depressed is wide to be controlled between 0.83 ~ 1.20 than B/H.