CN215544916U - Cold isostatic pressing treatment tool - Google Patents

Abstract

The utility model discloses a cold isostatic pressing treatment tool, which comprises an outer layer clamping plate, an elastic rope and a soft die, wherein the outer layer clamping plate is provided with a clamping groove; the outer layer splint is fixed outside the soft mould through an elastic rope. The product processed by adopting the clamping mode and the cold isostatic pressing has small bending deformation, convenient operation, higher size and shape and position precision of the processed product and high one-time qualification rate of the cold isostatic pressing. When the same type of product is processed in cold isostatic pressing, the tool can be repeatedly used.

Description

Cold isostatic pressing treatment tool

Technical Field

The utility model belongs to the field of hard alloy powder forming, and particularly relates to a cold isostatic pressing treatment tool.

Background

The cold isostatic pressing is to utilize the static pressure of high pressure liquid to directly act on the product in the elastic mold, the hard alloy plate with steps (bar) is difficult to realize one-step compression molding, and in order to reduce the processing difficulty of the hard alloy finished product and save the processing cost, the semi-finished pressed blank is milled to meet the shape and size requirements of the final product. Such as: a plate pressed compact with steps needs to be formed in two steps, namely, a plate meeting the size requirement is pressed firstly, and then steps on two sides are machined by a milling machine. However, when the cold isostatic pressing method is used for producing a plate product with a step having a large length-width ratio, for example, a pressed blank with a plate length of more than 200mm, a width of more than 50mm and a thickness of only 12mm, the density of the pressed blank of a semi-finished product after cold isostatic pressing treatment is not uniformly distributed, so that the plane of the product is bent to 2 mm-5 mm, and when the step is milled, the symmetry of the plate is required to be less than 0.2, and the pressed blank produced by the existing cold isostatic pressing method cannot meet the processing requirements.

Disclosure of Invention

The utility model aims to provide a tool for improving cold isostatic pressing treatment of hard alloy plates and bars. The problem that the product is scrapped due to plane bending deformation after cold isostatic pressing treatment because of uneven density is solved.

In order to solve the problems, the utility model provides a combined tool for cold isostatic pressing treatment of plates, which consists of an outer layer splint, an elastic rope (rubber belt) and a soft die (plastic bag). The outer layer splint is fixed outside the soft mould through the elastic rope.

Through frock, the product has been placed to the elasticity rope with splint and soft mould in close contact with in the soft mould, and along with the shrink of product in cold isostatic pressing processing procedure, splint all the time with elasticity soft mould and the interior product in the soft membrane in close contact with, through adopting this combination formula frock clamping, solved because of density inequality, cold wait to handle the condemned difficult problem of plane bending deformation.

Above-mentioned combination frock for cold isostatic pressing handles panel, outer splint preferred is two, and outer splint are through the relative centre gripping of elastic cord with the soft mould. The sizes of the outer layer splint body and the inner layer elastic soft die are determined according to the size of the shaped plate.

The number of the elastic ropes is usually several, such as 2-3, so as to ensure that the clamping plate is tightly contacted with the elastic die and the product, and ensure firm and stable clamping.

The product processed by adopting the clamping mode and the cold isostatic pressing has small bending deformation, convenient operation, higher size and shape and position precision of the processed product and high one-time qualification rate of the cold isostatic pressing. When the same type of product is processed in cold isostatic pressing, the tool can be repeatedly used.

Drawings

Fig. 1 is a sectional view showing a state in which the present invention is used.

Fig. 2 is a top view of fig. 1.

In the figure: 1 splint, 2 elastic soft moulds, 3 products and 4 elastic ropes.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, a tooling for manufacturing a plate with steps comprises the following steps:

(1) and placing the plate product 3 in the elastic soft die 2, wherein the length of the product is 250mm, and the thickness of the product is 15 mm. Sealing the soft mold opening, clamping the elastic soft mold and the product in the middle of the clamping plate 1, and finally binding and clamping the clamping plate and the elastic soft mold by using an elastic rope to enable the elastic soft mold to be in close contact with the clamping plate.

(2) And (4) putting the clamped product into a cold isostatic pressing cylinder for cold isostatic pressing treatment.

During the above-mentioned clamping, the elasticity rope preferred is two sets of, and it is tight to bind two departments about the splint to guarantee better clamping effect. Of course, the number of the elastic ropes can be increased properly according to the length of the product, such as three groups or four groups, so as to ensure the tight contact between the clamping plate and the soft mold after clamping.

After the cold isostatic pressing treatment is carried out by adopting the clamping method, the plane symmetry degree is 0.19 mm. The tolerance requirement when the steps are milled and processed subsequently is met.

Claims (6)

1. A cold isostatic pressing processing tool is characterized by comprising an outer layer clamping plate, an elastic rope and a soft die; the outer layer splint is fixed outside the soft mould through an elastic rope.

2. The isostatic pressing tooling as claimed in claim 1, wherein there are two outer plies, and the outer plies clamp the flexible mold relative to each other by means of elastic cords.

3. The isostatic press tooling of claim 1 wherein there are at least two elastic cords.

4. A cold isostatic pressing tool, as claimed in any one of claims 1-3, wherein said soft mold has an isostatic pressed product disposed therein.

5. The isostatic press tooling as claimed in claim 4, wherein said product is a plate.

6. The isostatic press tooling of claim 4 wherein said product is a bar.

Images