CN1258416C - Bimetal Die Casting Method - Google Patents

Abstract

The present invention relates to a method of bimetal pressure casting, which belongs to the technical field of metal casting. The aim of the present invention is to provide a fine new method of producing bimetal products with a pressure casting technology. The present invention has the technical scheme that in the method of bimetal pressure casting, an injection cylinder and a pressure chamber are added on the existing pressure casting equipment, and a casting gate is added on a pressure casting mould. A set of mould depth positioning device is added on a movable mould of the pressure casting mould and used for controlling product size during two-time pressure casting, and thus, an alloy product is produced by two-time pressure casting. The present invention has the advantages that two kinds of alloy with different performance are compounded together with the technology method of bimetal pressure casting of the present invention so as to obtain the alloy pressure casting product. The alloy pressure-casting product integrates the advantages of two kinds of alloy and has wide application range.

Description

Bimetal Die Casting Method

technical field

The invention belongs to the technical field of metal casting.

Background technique

The existing casting techniques for bimetallic casting mainly adopt centrifugal casting, sand casting and other casting techniques with simple equipment and easy operation. There is no pressure casting technique for bimetallic casting both at home and abroad.

Contents of the invention

The purpose of the present invention is to provide a brand-new method for producing bimetallic products using a pressure casting process.

The technical solution of the present invention is: a bimetallic die-casting method, which is characterized in that an injection cylinder and a pressure chamber are added to the existing die-casting equipment, a gate is added to the die-casting mold, and a gate is added to the movable mold of the die-casting mold. A set of mold depth positioning device is used to control the size of the product during two die-castings. Alloy products are produced through two die-castings. The specific steps are as follows:

1) Adjust the gap between the dynamic model cavity and the static model cavity to the thickness of the first metal in the alloy product, add the first metal into the first metal pressure chamber, start the first metal injection cylinder to shoot the first A metal into the mold cavity;

2) After the first metal forms a thin-walled metal layer in the mold cavity, adjust the depth of the mold cavity to the size of the final alloy product, add the second metal into the second metal pressure chamber, and start the second The first metal injection cylinder injects the second metal into the mold cavity;

3) After cooling, open the mold and take out the die-cast alloy product.

The beneficial effect of the present invention is that by using the bimetallic die-casting process described in the present invention, two alloys with completely different properties can be compounded together to obtain alloy die-casting products. The alloy die-casting product combines the advantages of the two alloys and has a wide range of applications.

Description of drawings

Fig. 1a is a state diagram of the die-casting equipment adopting the method of the present invention after the first injection.

Fig. 1b is a state diagram of the die-casting equipment adopting the method of the present invention after the second shot.

In the figure, 1. The second type of metal injection cylinder, 2. The first type of metal injection cylinder, 3. Static mold, 4. Moving mold, 5. Cavity depth positioning cylinder, 6. The second type of metal injection chamber, 7. The first metal pressure chamber, 8. The static model cavity, 9. The dynamic model cavity, H-the size of the final alloy product, h-the thickness of the first metal.

Detailed ways

The invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1a and Figure 1b, an injection cylinder and pressure chamber are added to the existing die-casting equipment, a gate is added to the static mold 3 of the die-casting mold, and a set is added to the movable mold 4 of the die-casting mold. The mold depth positioning device is used to control the size of the product during two die-castings, and the alloy products are produced through two die-castings. The specific steps are as follows:

1) Adjust the cavity depth positioning cylinder 5, adjust the gap between the dynamic model cavity 9 and the static model cavity 8 to the thickness h of the first metal in the alloy product, and add the first metal into the first metal pressure chamber 7 , start the first metal injection cylinder 2 to inject the first metal into the mold cavity;

2) After the first metal forms a thin-walled metal layer in the mold cavity, adjust the cavity depth positioning cylinder 5 so that the gap between the dynamic mold cavity 9 and the static mold cavity 8 is adjusted to the size H of the final alloy product, Add the second metal into the second metal pressure chamber 6, start the second metal injection cylinder 1 to inject the second metal into the mold cavity;

3) After cooling, open the mold and take out the die-cast alloy product.

Claims (1)

1. Bimetal Press-casting Method, it is characterized in that: on existing die casting equipment, increase a shot sleeve and press the chamber, on die casting, increase a cast gate, on the dynamic model of described die casting, increase the size of mold depth localization device product when controlling twice die casting, produce alloy product by twice die casting, concrete steps are as follows:

1) gap of dynamic model die cavity and quiet model cavity is adjusted to the thickness of first kind of metal in the alloy product, it is indoor that first kind of metal joined first kind of metal crimp, starts first kind of metal of first kind of metal shot sleeve injection and go into mold cavity;

2) when first kind of metal forms the metal level of thin-walled in mold cavity after, the mold cavity degree of depth is adjusted to the size of final alloy product, it is indoor that second kind of metal joined second kind of metal crimp, starts second kind of metal of second kind of metal shot sleeve injection and go into mold cavity;

3) after the cooling, the alloy product of die casting is taken out in die sinking.

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