CN104907471A

CN104907471A - Supporting wheel closed forging process and forging die

Info

Publication number: CN104907471A
Application number: CN201510244241.5A
Authority: CN
Inventors: 陈元锋; 沈渭淇; 徐轲; 梁常风; 吕阳
Original assignee: 徐州徐工履带底盘有限公司
Priority date: 2015-05-13
Filing date: 2015-05-13
Publication date: 2015-09-16

Abstract

The invention discloses a supporting wheel closed forging process and a forging die, and belongs to the technical field of forging. Blanking is conducted on round steel through a band sawing machine; heating is conducted on a bar material through a medium frequency induction heating furnace; jumping-up and preforging are conducted on the hot bar material on a l600T electric screw press, then the hot bar material is transferred to a 2500T electric screw press to be subjected to finish forging and forming through the closed forging die, and finally punching is finished on a 400T mechanical press; normalizing treatment is conducted on a forge piece generated after punching is conducted; the closed forging die adopted for the process comprises a lower cushion block (2), a lower male die (11), a lower base plate (3), a lower female die insert (5), a lower female die (4), an upper male die (6), an upper female die (7) and an upper cushion block (8). By means of the supporting wheel closed forging process and the forging die, burrs do not exist in the forged forge piece, and the total forge piece deformation area is reduced, so that the forging deformation force is lowered, the raw material utilization rate is increased, the subsequent trimming process is omitted, the product cost is lowered greatly, and product efficiency is improved remarkably.

Description

A kind of thrust wheel closed-die forging technique and forging mold

Technical field

The present invention relates to a kind of Forging Technology and forging mold, specifically a kind of thrust wheel closed-die forging technique and forging mold, belong to technical field of forging.

Background technology

Forging is the plasticity utilizing material, makes material deformation by External Force Acting, thus obtains the forging of required form, size and certain structure property.

In the prior art, what traditional thrust wheel Forging Technology adopted is open type forging, easily overlap is produced around the forging forged, add the forging force needed for raw-material loss and equipment, follow-up also needs increases trimming operation, thus increase production cost, make production efficiency lower simultaneously.

Summary of the invention

For above-mentioned prior art Problems existing, the invention provides a kind of thrust wheel closed-die forging technique, the forging forged can be made to there is not finning, reduce forging deformation power, significantly improve utilization rate of raw materials, remove follow-up trimming operation from, significantly reduce production cost, significantly improve production efficiency.

To achieve these goals, the idiographic flow of this thrust wheel closed-die forging technique is as follows:

(1), blanking, round steel adopts band sawing machine blanking, length variation requirement≤1mm, end face squareness requirement≤0.5mm;

(2), heat, adopt 2000KW Medium Frequency Induction Heating Furnace to heat bar, heating-up temperature is 1200 ± 30 DEG C;

(3), forging, 1600T electric screw press carries out jumping-up, blocking to hot pin material, then transfers on 2500T electric screw press and utilize closed-die forging mould to carry out finish forging, finally on 400T punching machine, complete punching;

(4), afterheat normalizing, the complete forging of punching enters afterheat normalizing stove with roller line and carries out normalized treatment, and the forging temperature after normalizing is down to less than 500 DEG C.

Invention also provides a kind of thrust wheel closed-die forging mould, comprise push rod, lower cushion block, lower punch, lower bolster, lower cavity die insert and the lower cavity die installed successively;

Described lower punch is nested with the outside of lower cavity die is provided with the lower die-sleeve be fixed on by trim ring on die holder;

Also comprise upper male mould, upper cavity die and the upper cushion block installed successively;

Described upper male mould is nested with the outside of upper cavity die is provided with the Upper Die-sleeve be fixed on by trim ring on die holder.

Compared with prior art, adopt this thrust wheel closed-die forging technique and forging mold, the forging forged can be made to there is not finning, forging total deformation area is made to reduce 20%-30%, thus reducing forging deformation power, raw-material utilization rate improves 8%-12% simultaneously, eliminates the manufacturing procedure of follow-up trimming, significantly reduce production cost, significantly improve production efficiency.

Accompanying drawing explanation

Fig. 1 is the thrust wheel forging structural representation in the present invention;

Fig. 2 is the thrust wheel forging mold schematic diagram in the present invention;

In figure: 1, push rod, 2, lower cushion block, 3, lower bolster, 4, lower cavity die, 5, lower cavity die insert, 6, upper male mould, 7, upper cavity die, 8, upper cushion block, 9, Upper Die-sleeve, 10, lower die-sleeve, 11, lower punch, 12, trim ring.

Detailed description of the invention

Below in conjunction with specific embodiment and accompanying drawing, the present invention will be further described.

Specific embodiment technological process:

(1), blanking, adopt Purchasing specification be Φ 100 round steel, band sawing machine blanking Φ 100 × 209 ± 1mm;

(2), heat, (1) Raw is sent into 2000KW Medium Frequency Induction Heating Furnace and heats bar, heating-up temperature is 1200 ± 30 DEG C;

(3), forge, on 1600T electric screw press, first jumping-up is carried out to hot pin material after discharging, blow energy 12%, afterwards blocking is carried out to it, blow energy is 28%, being put into by part after blocking on 2500T electric screw press utilizes closed-die forging mould to carry out finish forging, and blow energy is 18%, finally on 400T punching machine, completes punching to forging;

As shown in Figure 2, the mould that the technological process described in the present embodiment adopts is a kind of thrust wheel closed-die forging mould, comprises push rod 1, lower cushion block 2, lower punch 11, lower bolster 3, lower cavity die insert 5 and the lower cavity die 4 installed successively;

Described lower punch 11 is nested with the outside of lower cavity die 4 is provided with the lower die-sleeve 10 be fixed on by trim ring 12 on die holder, forms counterdie;

Also comprise upper male mould 6, upper cavity die 7 and the upper cushion block 8 installed successively;

Described upper male mould 6 is nested with the outside of upper cavity die 7 is provided with the Upper Die-sleeve 9 be fixed on by trim ring 12 on die holder, forms patrix.

When forging, upper die and lower die are beaten to be close together and are formed non-trimming forging, after forging, are taken out after forging jack-up by push rod 1.

Adopt the present embodiment, the forging forged can be made to there is not finning, forging total deformation area is made to reduce 20%-30%, thus reduce forging deformation power, raw-material utilization rate improves 8%-12% simultaneously, eliminate the manufacturing procedure of follow-up trimming, significantly reduce production cost, significantly improve production efficiency.

Claims

1. a thrust wheel closed-die forging technique, is characterized in that, concrete technology flow process is as follows:

2. realize a forging mold for thrust wheel closed-die forging technique described in claim 1, it is characterized in that,

Comprise push rod (1), lower cushion block (2), lower punch (11), lower bolster (3), lower cavity die insert (5) and the lower cavity die (4) installed successively;

Described lower punch (11) is nested with the outside of lower cavity die (4) is provided with the lower die-sleeve (10) be fixed on by trim ring (12) on die holder;

Also comprise upper male mould (6), upper cavity die (7) and the upper cushion block (8) installed successively;

Described upper male mould (6) is nested with the outside of upper cavity die (7) is provided with the Upper Die-sleeve (9) be fixed on by trim ring (12) on die holder.