CN116372099A

CN116372099A - Bimetal composite brake disc casting mould

Info

Publication number: CN116372099A
Application number: CN202211598851.1A
Authority: CN
Inventors: 李静敏; 范江波; 张朝学; 郭培君
Original assignee: Linzhou Fengbao Pipe Co Ltd
Current assignee: Linzhou Fengbao Pipe Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-07-04

Abstract

The utility model provides a bimetal composite brake disc casting mold, includes box and lower box on the sword, and the annular pit that sets up on the lower box is the pouring space, and the outside part in pouring space is fixed 2# psammitolite, and 2# psammitolite is fixed on the lower box, and the top of 2# psammitolite is equipped with 1# psammitolite, and 1# psammitolite is pressed on 2# psammitolite, and 1# psammitolite, the space that 2# psammitolite and lower box enclose is the brake disc pouring chamber. Compared with the prior art, the invention has the technical effects that the reinforcing plate is arranged in the working plate of the brake disc, the working plate is wrapped in the working plate, the physical properties of the working plate are reinforced, and the brake disc can be prevented from cracking.

Description

Bimetal composite brake disc casting mould

Technical Field

The invention relates to a bimetal composite brake disc casting mold.

Background

The brake disc is a part of an automobile, and the processing mode comprises a casting mode, for example, a processing mould of a high-carbon steel brake disc, a patent publication number CN112846078A and a patent document with a publication date of 2021.05.28 disclose the method.

Brake discs processed in this way sometimes crack.

Disclosure of Invention

The invention aims to solve the technical problems: how to design a bimetal composite brake disc casting mould to improve the performance of the brake disc.

The technical scheme of the invention is as follows:

the bimetal composite brake disc casting mold comprises an upper cutter box body and a lower cutter box body, wherein an annular pit arranged on the lower cutter box body is used as a casting space, a 2# sand core is fixed on the outer side part of the casting space, the 2# sand core is fixed on the lower cutter box body, a 1# sand core is arranged above the 2# sand core, the 1# sand core is pressed on the 2# sand core, and a space surrounded by the 1# sand core, the 2# sand core and the lower cutter box body is a brake disc casting cavity; the No. 1 sand core comprises a reinforcing plate, wherein the reinforcing plate is a double-layer plate made of steel and comprises an upper layer plate and a lower layer plate, the upper layer plate can be wrapped by an upper disc of a working disc of a brake disc, the lower layer plate can be wrapped by a lower disc of the working disc of the brake disc, and the upper layer plate is connected with the lower layer plate through a plurality of connecting columns; and a sand body is filled between the upper layer plate and the lower layer plate, the sand body extends outwards to form an outer edge part, the outer edge part is pressed on the No. 2 sand core, the sand body extends inwards to form an inner edge part, and the inner edge part is used for restraining the shape of a brake disc pouring cavity.

The upper layer plate and the lower layer plate are respectively provided with a plurality of circles of through holes, for example, the upper layer plate is provided with two circles of through holes, the lower layer plate is provided with three circles of through holes, each circle of through holes comprises a plurality of through holes, and the hole wall of each through hole extends away from the connecting column to form a boss.

The outer edge part is outwards extended with a round positioning bulge and a square positioning bulge which are oppositely arranged.

Compared with the prior art, the invention has the technical effects that the reinforcing plate is arranged in the working plate of the brake disc, the working plate is wrapped in the working plate, the physical properties of the working plate are reinforced, and the brake disc can be prevented from cracking.

Drawings

Fig. 1 is a schematic view of a reinforcing plate.

Fig. 2 is a schematic view of a # 1 sand core.

FIG. 3 is a schematic diagram of the present invention.

Fig. 4 is an enlarged schematic view of the flanging hole in fig. 3.

Detailed Description

The invention will be described in detail below with reference to the drawings and detailed description thereof.

Referring to fig. 3, a bimetal composite brake disc casting mold comprises an upper cutter box 11 and a lower cutter box 12, wherein an annular pit arranged on the lower cutter box 12 is a casting space, a 2# sand core 20 is fixed on the outer side part of the casting space, a 2# sand core 20 is fixed on the lower cutter box 12, a 1# sand core 30 is arranged above the 2# sand core 20, the 1# sand core 30 is pressed on the 2# sand core 20, and a space surrounded by the 1# sand core 30, the 2# sand core 20 and the lower cutter box 12 is a brake disc casting cavity 10.

Referring to fig. 1-2, the # 1 sand core 30 includes a reinforcing plate 40, the reinforcing plate 40 being a double-layered plate made of steel, including an upper plate 41 and a lower plate 42, the upper plate 41 being capable of being wrapped by an upper plate (see reference numeral 91 in fig. 3) of a working plate of a brake disc, the lower plate 42 being capable of being wrapped by a lower plate (see reference numeral 92 in fig. 3) of a working plate of a brake disc, the upper plate 41 and the lower plate 42 being connected by a plurality of connecting posts 45.

Between the upper plate 41 and the lower plate 42 is filled a sand body (which is to avoid the brake disc casting cavity 10) extending outwardly to form an outer edge portion 31, the outer edge portion 31 being pressed against the # 2 sand core 20, the sand body extending inwardly to form an inner edge portion 33, the inner edge portion 33 being adapted to constrain the shape of the brake disc casting cavity 10.

Referring to fig. 1, in order to make the physical properties of the brake disc better, the upper plate 41 and the lower plate 42 are each provided with several circles of through holes 43, for example, the upper plate 41 is provided with two circles of through holes 43, and the lower plate 42 is provided with three circles of through holes 43. Each circle of through holes 43 comprises a plurality of through holes, the hole walls of the through holes 43 extend away from the connecting columns 45 to form bosses 44, thus the through holes 43 form flanging holes, and the bosses 44 are similar to reinforcing ribs, so that the physical properties of the working disc can be enhanced.

In practice, the thickness of the upper plate 41 and the lower plate 42, the number of turns of the through holes 43, and the number of through holes 43 per turn are determined according to the workpiece performance.

Referring to fig. 2, in order to prevent the posture error of the # 1 sand core 30 when the # 1 sand core 30 is placed, the outer edge portion 31 extends out of the circular positioning protrusion 32 and the square positioning protrusion 321, and the circular positioning protrusion 32 is disposed opposite to the square positioning protrusion 321. The two positioning projections not only determine the circumferential position of the # 1 sand core 30, but also place the upper plate 41 and the lower plate 42 in error.

The working principle is as follows:

first, a reinforcing plate is manufactured: the reinforcing plate with the flanging hole is punched by steel materials, the flanging hole structure can be better fused with molten metal, and the locating plate is placed in the wall thickness of the casting sand mould cavity of the product (the processing is not affected).

Secondly, manufacturing a sand core: when the sand core is manufactured, the reinforcing plate manufactured in advance is placed in the core box, and the manufactured sand core and the reinforcing plate are integrally formed (the 1# sand core 30).

When in pouring, before the upper box and the lower box are combined, a reinforcing plate integrated with the No. 1 sand core is placed on the No. 2 sand core, after the reinforcing plate is placed, floating sand is blown off, and the combined box is prepared for pouring molten iron.

The characteristics of this patent:

1. after the reinforcing plate is used, the addition amount of other alloys in molten iron can be reduced, the casting cost is reduced, the cost is lowered, the efficiency is improved, and the market competitiveness is improved.

2. The reinforcing plate can play a role of a chiller, can reduce or eliminate shrinkage porosity and shrinkage cavity defects, and improves the yield.

3. The reinforcing plate has good heat dissipation, improves the strength, toughness and rigidity of the product, prevents cracking and improves the use safety.

See the prior art for further content.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the invention.

Claims

1. The utility model provides a bimetal composite brake disc casting mold, includes box (11) and lower box (12) on the sword, and the annular pit that sets up on lower box (12) is pouring space, its characterized in that: a 2# sand core (20) is fixed at the outer side part of the casting space, the 2# sand core (20) is fixed on the lower box body (12), a 1# sand core (30) is arranged above the 2# sand core (20), the 1# sand core (30) is pressed on the 2# sand core (20), and a space surrounded by the 1# sand core (30), the 2# sand core (20) and the lower box body (12) is a brake disc casting cavity (10);

the No. 1 sand core (30) comprises a reinforcing plate (40), wherein the reinforcing plate (40) is a double-layer plate made of steel, the double-layer plate comprises an upper layer plate (41) and a lower layer plate (42), the upper layer plate (41) can be wrapped by an upper plate of a working plate of a brake disc, the lower layer plate (42) can be wrapped by a lower plate of the working plate of the brake disc, and the upper layer plate (41) and the lower layer plate (42) are connected through a plurality of connecting columns (45);

and a sand body is filled between the upper layer plate (41) and the lower layer plate (42), the sand body extends outwards to form an outer edge part (31), the outer edge part (31) is pressed on the No. 2 sand core (20), the sand body extends inwards to form an inner edge part (33), and the inner edge part (33) is used for restraining the shape of the brake disc pouring cavity (10).

2. The bimetal composite brake disk casting mold of claim 1 wherein: the upper layer plate (41) and the lower layer plate (42) are provided with a plurality of circles of through holes (43), for example, the upper layer plate (41) is provided with two circles of through holes (43), the lower layer plate (42) is provided with three circles of through holes (43), each circle of through holes (43) comprises a plurality of through holes, and the hole wall of each through hole (43) extends away from the connecting column (45) to form a boss (44).

3. The bimetal composite brake disk casting mold of claim 2 wherein: the outer edge part (31) is outwards extended with a circular positioning protrusion (32) and a square positioning protrusion (321), and the circular positioning protrusion (32) and the square positioning protrusion (321) are oppositely arranged.