WO2023044594A1

WO2023044594A1 - Copper-steel combined mold

Info

Publication number: WO2023044594A1
Application number: PCT/CN2021/000213
Authority: WO
Inventors: 吴渊; 李希博; 佘京鹏; 李立鸿; 陈子凌
Original assignee: 汕头华兴（饶平）铜业有限公司; 汕头华兴冶金设备股份有限公司; 广东华兴换热设备有限公司; 饶平粤兴铜加工有限公司
Priority date: 2021-09-24
Filing date: 2021-10-27
Publication date: 2023-03-30
Also published as: CN215697771U

Abstract

A copper-steel combined mold, comprising a mold body (1), wherein the upper surface of the mold body (1) is provided with casting molding grooves (2), the mold body (1) comprises a copper plate (11) and a steel plate (12), the steel plate (12) is combined with the lower surface of the copper plate (11), and the casting molding grooves (2) are located in the upper surface of the copper plate (11).

Description

A copper-steel composite mold

technical field

The utility model relates to the technical field of casting molding equipment, in particular to a copper-steel composite mold.

Background technique

Ferroalloys refer to alloys composed of non-metallic or metallic elements other than carbon (C) and iron. There are many types of ferroalloys, including ferro-silicon, silicon-manganese, ferro-manganese, ferro-aluminum, ferro-chromium, ferro-nickel and other series of ferro-alloys. About 90% of ferroalloys are directly used in steelmaking as deoxidizing and desulfurizing agents and alloy additives in the steelmaking process, and about 10% are used as raw materials for other ferroalloy production, non-ferrous metal smelting, chemical industry, etc.

At present, ferroalloy casting methods mainly include pit casting, cast iron ingot mold casting and casting machine casting. With the trend of large-scale ferroalloy submerged arc furnace and the integration of casting and crushing, the casting method of casting machine will become the mainstream in the future.

There are a large number of molds on the casting machine, which are used for solidification and forming of ferroalloy liquid. The temperature of various ferroalloys after melting is above 1000°C. The high temperature liquid needs to flow into the mold of the casting machine. Heat exchange occurs between hot liquids.

At present, the molds on the casting machine generally adopt cast iron molds. The cooling effect of the cast iron mold is poor, and it is an ideal choice to use a copper mold with a high thermal conductivity. However, because the storage of natural copper is very small, the cost of copper is relatively high. During the manufacturing process of the mold whose overall material is copper, a large amount of copper material needs to be consumed, which increases the production cost of the mold.

Contents of the invention

The problem to be solved by the utility model is to provide a copper-steel composite mold, which can reduce the consumption of copper material, help reduce the production cost of the mold, and increase the mechanical strength of the mold.

In order to solve the problems of the technologies described above, the technical scheme adopted by the utility model is as follows:

A copper-steel composite mold, comprising a mold body, the upper surface of the mold body is provided with a casting groove, it is characterized in that: the mold body includes a copper plate and a steel plate, the steel plate is compounded on the lower surface of the copper plate, and the casting groove on the upper surface of the copper plate.

Combining the steel plate on the lower surface of the copper plate can increase the mechanical strength of the mold body. During the processing and manufacturing process of this copper-steel composite mold, steel plates are used to replace part of the amount of copper plates, and the cost of steel is less than that of copper, which can reduce the consumption of copper and reduce the production cost of the mold.

As a preferred solution of the present invention, the composite method between the steel plate and the copper plate adopts explosive welding, brazing welding or argon arc welding.

As a preferred solution of the present invention, the upper surface of the steel plate is connected with the lower surface of the copper plate, and the steel plate covers the entire lower surface of the copper plate. With this arrangement, the lower surface of the steel plate constitutes the lower surface of the mold body.

As a preferred solution of the present utility model, a plate groove capable of accommodating the steel plate is provided on the lower surface of the copper plate, and the steel plate is fixedly arranged in the plate groove. The above-mentioned steel plate is fixed in the plate groove on the lower surface of the copper plate to form the mold body. The lower surface of the steel plate forms a part of the lower surface of the mold body, and the area on the lower surface of the copper plate without plate groove forms another part of the lower surface of the mold body.

As a preferred solution of the present invention, a cooling channel is provided in the mold body, and a water inlet and a water outlet are respectively provided at both ends of the cooling channel; at least a part of the inner wall of the cooling channel is provided on a copper plate. The cooling water flowing in the cooling channel directly contacts the copper plate, taking away the heat from the copper plate, which is beneficial to quickly cooling the copper plate and the ferroalloy liquid in the casting groove.

In a specific solution, the upper surface of the steel plate is provided with a water tank with an opening facing upwards. When the steel plate is combined on the lower surface of the copper plate, the cooling channel is formed between the inner wall of the water tank and the lower surface of the copper plate. The water inlet and water outlet are arranged on the steel plate. During processing, the upper surface of the steel plate is first processed (such as milling) to form an upwardly facing water tank, and then the steel plate is compounded on the lower surface of the copper plate, and the inner wall of the water tank and the lower surface of the copper plate form a cooling channel.

In a more preferred solution, a sealing ring is provided between the steel plate and the copper plate, a plurality of first through holes are provided on the copper plate, a plurality of second through holes are provided on the sealing ring, and a plurality of first through holes are provided on the steel plate. One screw hole, the number of the first through hole and the second through hole is the same as that of the first screw hole respectively and corresponds one by one. The first screw hole is installed with the first screw, and the rod of the first screw passes through the corresponding first through hole in turn. hole, the second through hole, the head of the first screw and the steel plate lock the copper plate and the sealing ring together. The shape and size of the sealing ring usually match the part of the upper surface of the steel plate that does not have a water tank. After locking the first screw, the upper surface of the steel plate and the lower surface of the copper plate clamp the sealing ring together to eliminate the gap between the upper surface of the steel plate and the lower surface of the copper plate. The gap between the lower surfaces of the copper plates.

In another specific solution, the lower surface of the copper plate is provided with a water tank with an opening facing downwards. When the steel plate is composited on the lower surface of the copper plate, the cooling channel is formed between the inner wall of the water tank and the upper surface of the steel plate. The water inlet and water outlet are arranged on the copper plate. During processing, the lower surface of the copper plate is first processed (such as milling) to form a water tank with the opening facing downward, and then the steel plate is compounded on the lower surface of the copper plate, and the inner wall of the water tank and the upper surface of the steel plate form a cooling channel.

In a more preferred solution, a sealing ring is provided between the steel plate and the copper plate, a plurality of first through holes are provided on the copper plate, a plurality of second through holes are provided on the sealing ring, and a plurality of first through holes are provided on the steel plate. One screw hole, the first through hole and the second through hole have the same number as the first screw hole and correspond to each other. The first screw hole is equipped with a first screw, and the rod of the first screw passes through the corresponding first through hole in turn. hole, the second through hole, the head of the first screw and the steel plate lock the copper plate and the sealing ring together. The shape and size of the sealing ring usually match the part of the lower surface of the copper plate that does not have a water tank. After locking the first screw, the upper surface of the steel plate and the lower surface of the copper plate clamp the sealing ring together to eliminate the gap between the upper surface of the steel plate and the lower surface of the copper plate. The gap between the lower surfaces of the copper plates.

In another specific solution, the cooling channel is arranged inside the copper plate.

Water grooves can be processed at any position of the above-mentioned mold body that requires enhanced cooling, and the route and cross-sectional shape of the water groove can be flexibly set according to needs, thereby forming a cooling channel with the required route and cross-sectional shape.

In a specific solution, the inner wall of the cooling channel is provided with spiral ridges, and the spiral ridges are integrally processed with the inner wall of the cooling channel.

In another specific solution, a helical piece is arranged inside the cooling channel, and the outer end of the helical piece is connected to the inner wall of the cooling channel.

The spiral ridges or helical fins provided in the above-mentioned cooling channel cause a sudden change in the flow section of the cooling channel, and the flow velocity of the cooling fluid (the flow rate includes the magnitude and direction of the cooling fluid moving speed) changes, which plays a role in disturbing the flow, thereby The thermal resistance is reduced, and the cooling strength of the wall surface of the cooling channel is improved.

Compared with the prior art, the utility model has the following advantages:

The copper-steel composite mold can reduce the consumption of copper material, help to reduce the production cost of the mold, and can increase the mechanical strength of the mold.

Description of drawings

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

Fig. 2 is the sectional view of A-A among Fig. 1;

Fig. 3 is the sectional view of B-B in Fig. 2;

Fig. 4 is the structural representation of the utility model embodiment 2;

Fig. 5 is the sectional view of C-C among Fig. 4;

Fig. 6 is a structural schematic diagram of an installation position of the sealing ring in Embodiment 3 of the present invention;

Fig. 7 is a structural schematic diagram of another installation position of the sealing ring in Embodiment 3 of the present utility model;

Fig. 8 is a schematic diagram of the route of a water tank in Embodiment 7 of the present utility model;

Fig. 9 is a schematic diagram of the route of another water tank in Embodiment 7 of the present utility model.

Detailed ways

The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1-3, the copper-steel composite mold in this embodiment includes a mold body 1, and the upper surface of the mold body 1 is provided with a casting groove 2. The mold body 1 includes a copper plate 11 and a steel plate 12, and the steel plate 12 is composited. On the lower surface of the copper plate 11 the cast groove 2 is situated on the upper surface of the copper plate 11 . The composite method between the steel plate 12 and the copper plate 11 adopts explosive welding.

The upper surface of the steel plate 12 is connected with the lower surface of the copper plate 11 , and the steel plate 12 covers the entire lower surface of the copper plate 11 . With this arrangement, the lower surface of the steel plate 12 constitutes the lower surface of the mold body 1 .

Combining the steel plate 12 on the lower surface of the copper plate 11 can increase the mechanical strength of the mold body 1 . During the manufacturing process of this copper-steel composite mold, the steel plate 12 is used to replace part of the copper plate 11, and the cost of the steel material is less than that of the copper material, which can reduce the consumption of copper material and reduce the production cost of the mold.

The mold body 1 is provided with a cooling channel 13 , and two ends of the cooling channel 13 are respectively provided with a water inlet 131 and a water outlet 132 ; at least a part of the inner wall of the cooling channel 13 is provided on the copper plate 11 . The cooling water flowing in the cooling channel 13 directly contacts the copper plate 11, and takes away the heat on the copper plate 11, which is beneficial to quickly cooling the copper plate 11 and the ferroalloy liquid in the casting groove 2.

The upper surface of the steel plate 12 is provided with a water tank 14 with an opening facing upwards. When the steel plate 12 is compounded on the lower surface of the copper plate 11, the cooling channel 13 is formed between the inner wall of the water tank 14 and the lower surface of the copper plate 11. The water inlet 131 and the water outlet 132 are disposed on the steel plate 12 . During processing, the upper surface of the steel plate 12 is first processed (such as milling) to produce a water tank 14 with the opening facing upwards, and then the steel plate 12 is composited on the lower surface of the copper plate 11, and the inner wall of the water tank 14 and the lower surface of the copper plate 11 enclose a cooling channel 13.

Example 2

As shown in Figure 4-5, the difference between the copper-steel composite mold in this embodiment and embodiment 1 is:

A plate groove 111 capable of accommodating the steel plate 12 is provided on the lower surface of the copper plate 11 , and the steel plate 12 is fixedly arranged in the plate groove 111 . The above-mentioned steel plate 12 is fixed in the plate groove 111 of the lower surface of the copper plate 11, and then forms the mold body 1. The lower surface of the steel plate 12 constitutes a part of the lower surface of the mold body 1, and the area where the plate groove 111 is not provided on the lower surface of the copper plate 11 constitutes the mold body. 1 another part of the lower surface.

The lower surface of the copper plate 11 is provided with a water tank 14 with the opening facing downward. When the steel plate 12 is composited on the lower surface of the copper plate 11, the cooling channel 13 is formed between the inner wall of the water tank 14 and the upper surface of the steel plate 12. The water inlet 131 and the water outlet 132 are disposed on the copper plate 11 . During processing, earlier on the lower surface of copper plate 11, process (as milling process) go out the water tank 14 that opens downward, then steel plate 12 is compounded on the lower surface of copper plate 11, and the upper surface of water tank 14 inwall and steel plate 12 encircles cooling Channel 13.

Example 3

As shown in Figure 6-7, the difference between the copper-steel composite mold in this embodiment and Embodiment 1 is:

A sealing ring 3 is also provided between the steel plate 12 and the copper plate 11, the steel plate 12 is provided with a plurality of first through holes 121, the sealing ring 3 is provided with a plurality of second through holes 31, and the copper plate 11 is provided with a plurality of first through holes 121. The screw holes 112, the first through hole 121, and the second through hole 31 have the same number and one-to-one correspondence with the first screw hole 112 respectively. The first screw hole 112 is equipped with a first screw 113, and the rods of the first screw 113 pass through in turn. Through the corresponding first through hole 121 and second through hole 31 , the head of the first screw 113 and the steel plate 12 lock the copper plate 11 and the sealing ring 3 together. The shape and size of the sealing ring 3 usually match the part of the upper surface of the steel plate 12 that does not have a water tank 14. After locking the first screw 113, the upper surface of the steel plate 12 and the lower surface of the copper plate 11 clamp the sealing ring 3 together. To eliminate the gap between the upper surface of the steel plate 12 and the lower surface of the copper plate 11.

Example 4

The difference between the copper-steel composite mold in the present embodiment and embodiment 1 is:

The cooling channel 13 is disposed inside the copper plate 11 .

Example 5

The inner wall of the cooling channel 13 is provided with spiral ridges, and the spiral ridges are integrally processed with the inner wall of the cooling channel 13 . The spiral ribs provided in the above-mentioned cooling channel 13 make the flow cross section of the cooling channel 13 suddenly change, and the flow velocity of the cooling fluid (the flow velocity includes the magnitude and direction of the cooling fluid moving speed) changes, which plays the role of turbulence, thereby reducing the flow rate of the cooling fluid. The small thermal resistance improves the cooling strength of the wall surface of the cooling channel 13 .

Example 6

The cooling passage 13 is provided with a spiral piece, and the outer end of the spiral piece is connected with the inner wall of the cooling passage 13 . The spiral fins arranged in the above-mentioned cooling channel 13 make the flow section of the cooling channel 13 suddenly change, and the flow velocity of the cooling fluid (the flow velocity includes the size and direction of the cooling fluid moving speed) changes, which plays the role of turbulence, thereby reducing The thermal resistance improves the cooling strength of the wall surface of the cooling channel 13 .

Example 7

As shown in Figures 8-9, the difference between the copper-steel composite mold in this embodiment and Embodiment 1 is that:

Water grooves 14 can be processed at any position of the above-mentioned mold body 1 that requires enhanced cooling, and the route and cross-sectional shape of the water groove 14 can be flexibly set according to needs, thereby forming cooling channels 13 with required routes and cross-sectional shapes.

In addition, it should be noted that, in the specific embodiments described in this specification, the names of the various parts may be different, and all equivalent or simple changes made according to the structure, features and principles described in the patent concept of the utility model are the same. Included in the scope of protection of the utility model patent. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the definition defined in the claims scope, all should belong to the protection scope of the present utility model.

Claims

A copper-steel composite mold, comprising a mold body, the upper surface of the mold body is provided with a casting groove, it is characterized in that: the mold body includes a copper plate and a steel plate, the steel plate is compounded on the lower surface of the copper plate, and the casting groove on the upper surface of the copper plate.
The copper-steel composite mold according to claim 1, characterized in that: the composite method between the steel plate and the copper plate is explosive welding, brazing or argon arc welding.
The copper-steel composite mold according to claim 1, characterized in that: the upper surface of the steel plate is connected with the lower surface of the copper plate, and the steel plate covers the entire lower surface of the copper plate.
The copper-steel composite mold according to claim 1, characterized in that: a plate groove capable of accommodating the steel plate is provided on the lower surface of the copper plate, and the steel plate is fixedly arranged in the plate groove.
The copper-steel composite mold according to claim 1, characterized in that: the mold body is provided with a cooling channel, and the two ends of the cooling channel are respectively provided with a water inlet and a water outlet; at least a part of the inner wall of the cooling channel is set on the copper plate .
The copper-steel composite mold according to claim 5, wherein: the upper surface of the steel plate is provided with a water tank with an opening upward, and when the steel plate is compounded on the lower surface of the copper plate, the inner wall of the water tank and the lower surface of the copper plate The cooling channel is formed between the surfaces, and the water inlet and water outlet are arranged on the steel plate.
The copper-steel composite mold according to claim 5, wherein the lower surface of the copper plate is provided with a water tank with an opening facing downward, and when the steel plate is compounded on the lower surface of the copper plate, the inner wall of the water tank and the upper surface of the steel plate The cooling channel is formed between the surfaces, and the water inlet and water outlet are arranged on the copper plate.
The copper-steel composite mold according to claim 6 or 7, wherein a sealing ring is provided between the steel plate and the copper plate, a plurality of first through holes are provided on the copper plate, and a plurality of first through holes are provided on the sealing ring. Two through holes, the steel plate is provided with a plurality of first screw holes, the number of the first through holes and the second through holes are the same as that of the first screw holes and correspond to each other, the first screw holes are equipped with the first screw, the first screw The rod portion of the screw passes through the corresponding first through hole and the second through hole in turn, and the head of the first screw and the steel plate jointly lock the copper plate and the sealing ring.
The copper-steel composite mold according to claim 5, wherein the cooling channel is arranged inside the copper plate.
The copper-steel composite mold as claimed in claim 5, characterized in that:

The inner wall of the cooling channel is provided with spiral ridges, and the spiral ridges are integrally processed with the inner wall of the cooling channel;

The cooling passage is provided with a spiral piece, and the outer end of the spiral piece is connected with the inner wall of the cooling passage.