WO2017035996A1

WO2017035996A1 - Composite material brake disc wherein ceramic framework having two-dimensional structure specific arrangement reinforces light metal

Info

Publication number: WO2017035996A1
Application number: PCT/CN2015/097815
Authority: WO
Inventors: 房殊; 房明
Original assignee: 房殊
Priority date: 2015-09-06
Filing date: 2015-12-18
Publication date: 2017-03-09

Abstract

A composite material brake disc wherein a ceramic framework having a two-dimensional structure specific arrangement reinforces a light metal, said brake disc comprising a metal substrate (1), the metal substrate (1) being provided with one or two friction surface layers (2), the friction surface layers (2) being composite material friction surface layers wherein a ceramic framework having a two-dimensional structure specific arrangement reinforces a light metal. The brake disc fully utilises the features that industrial ceramics have high hardness, high wear resistance and high temperature resistance, and that light metals are light, weight-reducing, strong and tough. An industrial ceramic is prepared via a suitable process into a ceramic framework having a two-dimensional structure specific arrangement, and the ceramic framework is then composited with a light metal and prepared into the brake disc which has the characteristics of both the industrial ceramic and the light metal. The brake disc may satisfy friction and braking requirements in moving mechanical devices including but not limited to airplanes, rail transit vehicles, highway transit vehicles, boats etc.

Description

Two-dimensional structure-specific ceramic skeleton reinforced light metal composite brake disc

Technical field

The invention relates to a ceramic skeleton reinforced light metal composite brake disc with two-dimensional structure and specific arrangement, in particular to a ceramic skeleton reinforced light metal composite brake disc with two-dimensional structure disordered arrangement and two-dimensional structure orderly arrangement, belonging to friction and braking field.

Background technique

With the rapid development of modern aerospace, high-speed railway, highway transportation and wind power generation, more and more attention has been paid to the problems of friction, clutch and braking system weight, safety, vibration and noise. Especially under the conditions of high speed and heavy load, under the premise of not affecting the friction clutch and braking performance, the requirements for friction clutch, braking system, weight reduction, shock absorption, noise reduction, safety, comfort and wear resistance are more and more. high. Some new materials with integrated functions and structures have attracted the attention of scholars at home and abroad due to their remarkable shock absorption, noise reduction, light weight and excellent friction and wear performance.

Traditional steel material brake disc, carbon/carbon composite brake disc, carbon ceramic composite brake disc, ceramic particle reinforced aluminum alloy composite brake disc, foam ceramic reinforced aluminum alloy composite brake disc and metal surface Brake discs coated with wear-resistant layers to improve wear resistance have their advantages and disadvantages, but the search for a brake disc with good overall performance has become a hot spot in the industry.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and to provide a ceramic frame-reinforced light metal composite brake disc with a two-dimensional structure and a specific arrangement, which can be satisfied, but not limited to aircraft, rail vehicles, road traffic vehicles, ships. The friction and braking requirements of sports equipment.

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

A ceramic frame-reinforced light metal composite brake disc with two-dimensional structure and specific arrangement, the key technical point is that it comprises a metal base body, the metal base body is provided with one or two friction surface layers, and the friction surface layer is two The ceramic skeleton of the specific arrangement of the dimensional structure enhances the friction surface layer of the light metal composite.

As a further improvement of the present invention, it is selected from any of the following structures:

A. The metal substrate is provided with a friction surface layer, the metal substrate comprises a metal disk and heat dissipation ribs of various known shapes disposed on one side of the metal disk, the friction surface layer and the heat dissipation rib respectively Provided on both sides of the metal disk;

B. The metal substrate is provided with two friction surface layers, the metal substrate comprises a metal disk, and the two friction surface layers are respectively disposed on two sides of the metal disk;

C. The metal substrate is provided with two friction surface layers, the metal substrate comprising two metal disks and connecting the two metals The connecting body of the disc, the two friction surface layers are respectively disposed outside the metal disc, and the connecting body is a heat dissipating rib of various known shapes.

The structure described in the above B is a so-called all-disc structure brake disc, and the structure described in the above C is a so-called ventilating disc structure brake disc.

As a further improvement of the present invention, the friction surface layer is provided with a ventilation groove and/or a ventilation hole, and the ventilation groove is opened in a radial direction of the friction surface layer, and the ventilation groove has a straight line or a curved shape in a radial direction. The venting holes are opened in the axial direction of the friction surface layer, and the vent holes are through holes and/or non-through holes.

As a further improvement of the present invention, the friction surface layer comprises one or more planarly arranged two-dimensional structure-specific ceramic skeleton-reinforced light metal composite materials having a thickness of 1 to 9 mm.

As a further improvement of the present invention, the two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite material comprises a ceramic skeleton specifically arranged in a two-dimensional structure and a light metal filled in a ceramic skeleton of a specific arrangement of the two-dimensional structure. The ceramic skeleton in which the two-dimensional structure is specifically arranged is one or two or more ceramics having a hollow triangle shape, a quadrangular shape, a pentagon shape, a hexagonal shape, a polygonal shape, a polygonal shape, a circular shape, a curved shape and the like having a wall thickness of 0.05 to 3 mm. The cavity unit is composed of an area of 1 to 16 mm ^{2 in the} two-dimensional xy direction of the ceramic skeleton cavity unit, and a z-direction of the ceramic skeleton cavity unit is a through hole, and the height in the z direction is 1 to 9 mm.

As a further improvement of the present invention, the ceramic skeleton in which the two-dimensional structure is specifically arranged accounts for 5 to 60% of the area of the friction surface layer of the composite material, and the light metal accounts for 95 to 40% of the area of the friction surface layer of the brake disc composite.

As a further improvement of the present invention, the two-dimensional structure-specifically arranged ceramic skeleton is composed of a multi-phase ceramic selected from a carbide ceramic, a nitride ceramic, an oxide ceramic, and a cermet, or two or more composite ceramics, Sialon (Sialon). ) Made of ceramics.

As a further improvement of the present invention, the light metal in the ceramic skeleton-reinforced light metal composite material of the two-dimensional structure-specific arrangement includes titanium, magnesium, aluminum and alloys thereof, and light metals and alloys thereof which are reinforced with other materials. The light metal and its alloy added with the addition of other materials are selected from the group consisting of graphite, carbon nanotubes or various ceramic particle reinforced light metals and alloys thereof.

As a further improvement of the present invention, the material of the metal substrate may be various ferrous metals, light metal titanium, magnesium, aluminum and alloys thereof, as well as light metals and alloys thereof which are reinforced with other materials. The light metal and its alloy added with the addition of other materials are selected from the group consisting of graphite, carbon nanotubes or various ceramic particle reinforced light metals and alloys thereof.

As a further improvement of the present invention, it is prepared by any of the following methods:

Method 1: placing a ceramic skeleton with a specific arrangement of two-dimensional structures into a mold, adding the heated light metal, and performing one or more moldings in a process such as extrusion, die forging, casting, etc.;

Method 2: placing a ceramic skeleton and a reinforcing metal grid with a specific arrangement of two-dimensional structures into a mold, adding the heated light metal, and forming one or more ones in a process such as extrusion, die forging, casting, etc.;

Method three:

a. The ceramic skeleton with a specific arrangement of the two-dimensional structure is first placed into a mold, and the heated light metal is added, and one or more of the processes of extrusion, die forging, casting, etc. are prepared into a composite friction surface layer;

b. Then, the heated metal matrix material is placed in a mold, and is prepared into a metal matrix by one or more of extrusion, die forging, casting, and the like;

c. Finally, the composite friction surface layer and the metal substrate are completed by one or more secondary molding processes such as inlaying, welding, composite casting, riveting, and the like;

Method four:

b. Put the reinforcing metal mesh into the mold, add the heated metal matrix material, and prepare the metal matrix by one or more of the processes of extrusion, die forging, casting, etc.

c. Finally, the composite friction surface layer and the metal substrate are completed by one or more secondary molding processes such as inlaying, welding, composite casting, riveting and the like.

As a further improvement of the present invention, the two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite material is selected from a ceramic skeleton-reinforced light metal composite material having a two-dimensional structure periodically arranged or a ceramic skeleton-reinforced light metal composite material having a two-dimensional structure disorderly arranged. .

As a further improvement of the present invention, the two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite material comprises a ceramic skeleton periodically arranged in a two-dimensional structure and a light metal filled in a ceramic skeleton periodically arranged in the two-dimensional structure, the second The ceramic skeleton in which the dimensional structure is periodically arranged is periodically arranged by the ceramic skeleton cavity unit.

As a further improvement of the present invention, the ceramic skeleton-reinforced light metal composite material in which the two-dimensional structure is disorderly arranged includes a ceramic skeleton in which a two-dimensional structure is disorderly arranged, and a light metal filled in a ceramic skeleton in which the two-dimensional structure is disorderly arranged. The ceramic skeleton in which the two-dimensional structure is disorderly arranged is randomly and disorderly arranged by ceramic skeleton cavity units.

The metal mesh for reinforcement according to the present invention is selected from a grid-like metal having a frame thickness of 0.3 to 3 mm and a height of 0.5 to 30 mm and having 1 to 30 meshes per square centimeter.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

1. The invention fully utilizes the characteristics of high hardness, high wear resistance, high temperature resistance, light metal weight, weight loss, high strength and good toughness of industrial ceramics, and the industrial ceramics are prepared into a disordered arrangement of two-dimensional structure by a suitable process. And/or periodic arrangement of pottery The porcelain skeleton is then combined with light metal to prepare a new brake disc that combines the characteristics of both.

2. The friction surface layer of the brake disc of the present invention is a composite of a hollow ceramic skeleton specifically arranged in the two-dimensional structure and a light metal or an alloy filled therein. The hollow ceramic skeleton in which the two-dimensional structure is specifically arranged includes a hollow ceramic skeleton in which two-dimensional structures are periodically arranged and a hollow ceramic skeleton in which two-dimensional structures are disorderly arranged. The ceramic skeletons periodically arranged in a two-dimensional structure are arranged in a two-dimensional space period in the xy plane, and are through holes in the Z-axis direction, and columnar light metals or alloys thereof are filled therebetween. The ceramic skeleton in which the two-dimensional structure is disorderly arranged is disorderly arranged in the xy plane of the two-dimensional space, and is a through-hole in the Z-axis direction, and a columnar light metal or an alloy thereof is filled therebetween. The ceramic hollow skeleton blanks which are specifically arranged in two-dimensional structure are obtained by grouting, extrusion, dry pressing, isostatic pressing, etc., so the sintered ceramic skeleton has a smooth side wall, a neat inner passage, and is convenient for casting liquid. The advantages of metal flow, dense packing, etc. are suitable for various extrusion, die forging and casting processes, and can reduce casting defects of composite materials, improve yield and overall performance.

3. Two-dimensional structure-specific ceramic skeleton reinforced light metal composite brake disc, compared with ceramic particle reinforced aluminum alloy composite brake disc, can withstand higher friction braking temperature, and can effectively overcome particle reinforced aluminum alloy The high temperature softening of the composite brake disc during friction braking is prone to the disadvantages of furrows, bonding and even large-area tearing off; and the ceramic skeleton is more evenly distributed than the foam ceramic skeleton reinforced aluminum alloy composite brake disc. The frictional friction caused by the slight difference between the ratio of the area of the aluminum alloy and the ceramic skeleton in the foam ceramic skeleton reinforced aluminum alloy composite brake disc is avoided, the friction coefficient is more stable during friction braking, and the friction curve is smoother.

4. The composite brake disc according to the invention can combine the excellent plasticity and strength of the metal with the ability of the ceramic skeleton reinforcement of the two-dimensional structure to be subjected to load and anti-friction wear, so that it has good vibration damping and anti-vibration. Thermal decay and friction performance, can withstand large static loads and cyclic loads for a long time, and have good application prospects in friction and clutch and braking in aerospace, orbit and road transportation, machinery and other fields.

5. The brake disc provided by the invention has stable friction coefficient when it is frictionally braked with the existing composite brake pad, powder metallurgy brake pad and other such as carbon/carbon brake pad and carbon ceramic brake pad. Between 0.2 and 0.5, it can fully meet the requirements of aircraft, rail transit vehicles, road traffic vehicles, various sports machinery and so on.

DRAWINGS

1-1 is a schematic structural view of Embodiment 1 of the present invention;

Figure 1-2 is a side view of Embodiment 1 of the present invention;

2-1 is a schematic structural view of Embodiment 2 of the present invention;

Figure 2-2 is a cross-sectional view showing a second embodiment of the present invention;

3-1 is a schematic structural view of Embodiment 3 of the present invention;

Figure 3-2 is a side view of Embodiment 3 of the present invention;

4 is a schematic structural view of a friction surface layer of the present invention including a plurality of composite material slabs;

Figure 5-1 is a schematic structural view showing the provision of a linear ventilation groove in the friction surface layer of the present invention;

Figure 5-2 is a schematic structural view showing a curved ventilation groove of the friction surface layer of the present invention;

6-1 is a schematic structural view showing a non-through hole vent hole formed in a friction surface layer of the present invention;

Figure 6-2 is a cross-sectional view taken along line A-A of 6-1;

6-3 is a schematic structural view of a through hole vent hole formed in a friction surface layer of the present invention;

Figure 6-4 is a cross-sectional view taken along line A-3 of 6-3;

7 is a schematic structural view of a ceramic skeleton periodically arranged in a two-dimensional structure according to the present invention;

Figure 8 is a schematic view showing the shape of a two-dimensional structure of a ceramic skeleton periodically arranged in a two-dimensional xy direction;

9 is a schematic structural view of a ceramic skeleton in which a two-dimensional structure is disorderly arranged according to the present invention;

Figure 10 is a schematic view showing the shape of the ceramic skeleton of the two-dimensional structure disorderly arranged in a two-dimensional xy direction;

In the drawing:

1 metal base, 2 friction surface layer, 3 heat dissipation ribs, 4 ventilation slots, 5 ventilation holes.

detailed description

The invention will now be described in further detail with reference to the drawings and embodiments.

The two-dimensional structural disordered ceramic skeleton-reinforced light metal composite material used in the following embodiments includes a ceramic skeleton in which a two-dimensional structure is disorderly arranged, and a light metal filled in a ceramic skeleton in which the two-dimensional structure is disorderly arranged, the two-dimensional The ceramic skeleton whose structure is disorderly arranged is randomly and disorderly arranged by the ceramic skeleton cavity units in the xy direction. Structures As shown in FIGS. 9 and 10, the ceramic skeleton cavity unit has a shape of a hollow triangle, a quadrangle, a pentagon, a hexagon, a polygon, a polygon, a circle, a curve, and the like in a two-dimensional xy direction, and the ceramic skeleton cavity unit The area in the two-dimensional xy direction is 1 to 16 mm ² , and the z-direction of the ceramic skeleton cavity unit is a through-hole, and the height in the z-direction is 1 to 9 mm. The ceramic skeleton in which the two-dimensional structure is disorderly arranged accounts for 5 to 60% of the area of the friction surface layer of the composite material, and the light metal accounts for 95 to 40% of the area of the friction surface layer of the brake disc composite.

The two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite material used in the following embodiments comprises a ceramic skeleton periodically arranged in a two-dimensional structure and a light metal filled in a ceramic skeleton periodically arranged in the two-dimensional structure, as shown in FIGS. 7 and 8. It is to be noted that the two-dimensional xy direction of the ceramic skeleton periodically arranged in the two-dimensional structure is any one or more of arbitrary shapes such as a hollow triangle, a quadrangle, a pentagon, a hexagon, a polygon, a polygon, a circle, and a curve. The periodicity of the arrangement of the arrays is arranged in an orderly manner. The area of the cavity unit of any shape such as a hollow triangle, a quadrangle, a pentagon, a hexagon, a polygon, a polygon, a circle, a curve, or the like in a two-dimensional xy direction is 1 to 16 mm ² , and the z direction of the ceramic skeleton is a through hole, z The height of the direction is 1 to 9 mm. The ceramic skeleton periodically arranged in the two-dimensional structure accounts for 5 to 60% of the area of the friction surface layer of the composite material, and the light metal accounts for 95 to 40% of the area of the friction surface layer of the brake disc composite.

In the following embodiments, the ventilation groove 4 may be opened on the friction surface layer as needed. As shown in FIG. 5-1, the ventilation groove 4 has a linear shape in the radial direction, as shown in FIG. 5-2, the ventilation groove 4 It has a curved shape in the radial direction.

In the following embodiments, the venting holes 5 may be formed on the friction surface layer 2 as needed. As shown in FIGS. 6-1 and 6-2, the venting holes 5 are in the form of non-through holes, as shown in FIGS. 6-3 and 6- As shown in Fig. 4, the vent hole 5 is in the form of a through hole.

Embodiment 1 Single friction surface structure brake disc overmolded by different light metals

Referring to Figures 1-1 and 1-2, the present embodiment provides a ceramic frame-reinforced light metal composite brake disk having a two-dimensional structure disorderly arranged, comprising a metal substrate 1 having a metal substrate 1 a friction surface layer 2, the metal substrate 1 includes a metal disk and a heat dissipation rib 3 disposed on one side of the metal disk, and the friction surface layer 2 and the heat dissipation rib 3 are respectively disposed on two sides of the metal disk, that is, A friction surface layer 2 is provided on one side of the metal disk, and the metal disk has a heat dissipation rib 3 on the back side opposite to the friction surface layer 2. The friction surface layer 2 is a ceramic skeleton reinforced light metal composite friction surface layer which is disorderly arranged in a two-dimensional structure, and the friction surface layer 2 is composed of two two-dimensional structurally arranged ceramic skeleton reinforced light metal composite materials arranged in a plane. The two composite friction facing layers 2 are separated by two venting slots 4 which are linear in shape and have a straight line shape.

In this embodiment, the ceramic skeleton in which the two-dimensional structure is disorderly arranged is a 95 alumina ceramic skeleton which is randomly arranged in a two-dimensional direction. In this embodiment, the light metal filled in the ceramic skeleton of the two-dimensional structure disorderly arranged is 2024 aluminum. Alloy, the metal substrate 1 in this embodiment is a metal matrix of A350 magnesium alloy brake disc with a built-in black metal mesh, which is specifically manufactured by the following method:

The first step: According to the design requirements, the 95-alumina ceramic skeleton which is purchased in the two-dimensional structure of Yixing Yizhong Ceramics Technology Co., Ltd. is randomly arranged according to the brake disc drawing, and the ceramic can be cut according to the needs. The surface is subjected to a corresponding surface treatment;

The second step: inserting the cut 95-alumina ceramic skeleton of the corresponding shape of the two-dimensional structure into a forging mold preheated to 450±10 ° C;

The third step: 2024 aluminum alloy heated to 465 ± 10 ° C, by applying a pressure of 40 ~ 70MPa, combined with a two-dimensional structure of 95 alumina ceramic skeleton placed in a forging die to form a two-dimensional The 95-aluminum ceramic skeleton of the disordered arrangement of the structure reinforces the 2024 aluminum alloy friction surface layer. The friction facing block may be rounded or may be of various other shapes as desired by the design. According to the need, the ventilation holes and riveting holes of various shapes can be integrally forged on the friction surface layer, and heat-treated and machined for use;

Step 4: Put the black metal mesh used to enhance the strength of the light metal into the forging die, and combine the preheated A350 magnesium alloy with the black metal mesh by the die forging method. Brake disc metal base with shape cooling ribs. Brake disc metal base can also be forged into various shapes of ventilation holes, riveting holes, heat treatment according to design requirements. Spare after machining;

Step 5: Combine the prepared friction surface layer with the brake disc metal substrate by one or more processes of inlaying, friction welding or riveting, and finely process the finished product.

The single friction surface layer brake disc prepared in this embodiment has a weight reduction of about 60% compared with the conventional steel material brake disc, and the manufacturing process is simpler, the machining allowance is less, and the cost is more than that of other material brake discs. Low, industrialized production is easier, and can meet the corresponding requirements of friction and braking conditions. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 2 Single friction surface structure brake disc overmolded by different light metals

Referring to Figures 1-1 and 1-2, the present embodiment provides a two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite brake disc, which comprises a metal substrate 1, and the metal substrate 1 is provided with a a friction surface layer 2, the metal substrate 1 includes a metal disk and a heat dissipation rib 3 disposed on one side of the metal disk, and the friction surface layer 2 and the heat dissipation rib 3 are respectively disposed on two sides of the metal disk, that is, A friction surface layer 2 is provided on one side of the metal disk, and the metal disk has a heat dissipation rib 3 on the back side opposite to the friction surface layer 2. The friction surface layer 2 is a ceramic skeleton reinforced light metal composite friction surface layer which is periodically arranged in a two-dimensional structure, and the friction surface layer 2 is composed of two two-dimensional structurally arranged ceramic skeleton reinforced light metal composite materials arranged in a plane, two pieces. The composite friction surface layer 2 is separated by two ventilation slots 4 whose radial direction is a straight line.

In this embodiment, the ceramic skeleton periodically arranged in a two-dimensional structure is a 95-aluminum ceramic skeleton periodically arranged in a two-dimensional direction. In this embodiment, the light metal filled in the ceramic skeleton periodically arranged in the two-dimensional structure is 2024 aluminum alloy. The metal substrate 1 in this embodiment is a metal matrix of an A350 magnesium alloy brake disc with a built-in black metal mesh, which is specifically manufactured by the following method:

The first step: According to the design requirements, the honeycomb 95 alumina ceramic skeleton, which is arranged in the two-dimensional structure of Yixing City Yizhong Ceramics Technology Co., Ltd., is prepared according to the brake disc drawings, and can also be used according to the needs. The surface of the ceramic is subjected to a corresponding surface treatment;

The second step: placing the cut 95-alumina ceramic skeleton of the corresponding shape of the two-dimensional structure periodically into a forging die preheated to 450±10 ° C;

The third step: 2024 aluminum alloy heated to 465 ± 10 ° C, by applying a pressure of 40 ~ 70MPa, combined with a two-dimensional structure of 95 alumina ceramic skeleton arranged in a forging die to form a two-dimensional structure The periodically arranged 95 alumina ceramic skeleton reinforces the 2024 aluminum alloy friction surface layer. The friction facing block may be rounded or may be of various other shapes as desired by the design. According to the need, the ventilation holes and riveting holes of various shapes can be integrally forged on the friction surface layer block, and heat-treated and machined for use;

Step 4: Put the ferrous metal mesh used to enhance the strength of the light metal into a forging die and heat the preheated A350 Gold, by means of die forging, is integrated with a black metal mesh to form a brake disc metal substrate having various heat dissipating ribs on the back surface. The metal base of the brake disc can also be forged into various shapes of vent holes and riveting holes according to the design requirements, and heat-treated and machined for use;

Embodiment 3 Double friction surface layer body disc brake disc formed by the same metal at one time

As shown in FIGS. 2-1 and 2-2, the present invention provides a ceramic frame-reinforced light metal composite brake disc with a two-dimensional structure disorderly arranged, which comprises a metal substrate 1 provided with a metal substrate 1 Two friction surface layers 2, the metal substrate 1 comprises a metal disk, the two friction surface layers 2 are respectively arranged on both sides of the metal disk, that is, the two friction surface layers are connected by a metal disk between them . The friction surface layer 2 is composed of a ceramic two-dimensionally structured ceramic skeleton-reinforced light metal composite material.

The ceramic skeleton in which the two-dimensional structure is disorderly arranged in this embodiment is a silicon nitride ceramic skeleton in which the two-dimensional structure is disorderly arranged, and the light metal and the metal matrix filled in the ceramic skeleton of the two-dimensional structure disorderly arranged are 7075 aluminum alloy. The specific preparation method is as follows:

The first step: according to the design requirements, the silicon nitride ceramic skeleton which is randomly arranged in the two-dimensional structure of Shijiazhuang Huihe Sealing Material Factory is prepared into the required shape of the corresponding brake disc according to requirements, and ceramics can be made according to requirements. The surface is subjected to a corresponding surface treatment;

The second step: according to the shape of the brake disc, the die of the pressure casting double-friction surface layer body disc brake disc is designed. The mold comprises a cavity of a silicon nitride ceramic skeleton in which two-dimensional structures are randomly arranged, and a silicon nitride ceramic skeleton in which a correspondingly shaped two-dimensional structure is disorderly arranged is placed in a cavity of a die casting machine mold;

The third step: setting the process, the molten 7075 aluminum alloy is extruded at a pressure of 5 to 100 MPa into a silicon nitride ceramic skeleton in which the two-dimensional structure is disorderly arranged, which has been evacuated and preheated to 150~. A 300 ° C pressure casting mold in the cavity. After cooling, it is obtained that the two friction surface layers are double friction surface layer body plate structure brake disks which are connected by metal between them;

The fourth part: the silicon nitride ceramic reinforced 7075 aluminum alloy double-friction surface layer body disc brake disc of the two-dimensional structure obtained by the pressure casting process is heat-treated according to the corresponding heat treatment process of the 7075 aluminum alloy;

The fifth step: the silicon nitride ceramics of the non-sequential arrangement of the two-dimensional structure after heat treatment according to the corresponding process is strengthened, and the brake disc of the double-friction surface layer body plate structure of the 7075 aluminum alloy is obtained, and the finished product is obtained after fine processing;

The double friction surface layer body disc brake disc prepared by the method has a weight loss of about 60% compared with the traditional steel material brake disc, and the manufacturing process is simpler and the machining allowance is less than other material brake discs. The cost is lower, the industrial production is easier, and the corresponding friction and braking conditions are well met. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 4 Double friction surface layer body disc brake disc formed by the same metal at one time

Referring to Figures 2-1 and 2-2, a two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite brake disc includes a metal base 1 having two metal bases 1 A friction surface layer 2, the metal substrate 1 comprises a metal disk, and the two friction surface layers 2 are respectively disposed on both sides of the metal disk, that is, the two friction surface layers are connected together by a metal between them. The friction surface layer 2 is composed of a ceramic skeleton-reinforced light metal composite material which is periodically arranged in a two-dimensional structure.

In this embodiment, the ceramic skeleton periodically arranged in a two-dimensional structure is a silicon nitride ceramic skeleton periodically arranged in a two-dimensional structure, and the light metal and the metal matrix filled in the ceramic skeleton periodically arranged in the two-dimensional structure are 7075 aluminum alloy, and the specific preparation method thereof as follows:

The first step: according to the design requirements, the silicon nitride ceramic skeleton arranged in the two-dimensional structure period of Shijiazhuang Huihe Sealing Material Factory is prepared into the corresponding shape of the corresponding brake disc according to requirements, and the ceramic surface can also be used according to requirements. Perform the corresponding surface treatment;

The second step: according to the shape of the brake disc, the die of the pressure casting double-friction surface layer body disc brake disc is designed. The mold comprises a cavity in which a silicon nitride ceramic skeleton arranged periodically in a two-dimensional structure is arranged, and a silicon nitride ceramic skeleton in which a corresponding shape of a two-dimensional structure is periodically arranged is placed in a cavity of a die of a pressure casting machine;

The third step: setting the process, the molten 7075 aluminum alloy is extruded at a pressure of 5 to 100 MPa into a silicon nitride ceramic skeleton arranged in a two-dimensional structure, which has been evacuated and preheated to 150-300. °C pressure casting in the cavity of the mold. After cooling, it is obtained that the two friction surface layers are double friction surface layer body plate structure brake disks which are connected by metal between them;

The fourth part: the two-dimensional structure of the silicon nitride ceramics obtained by the pressure casting process, the 7075 aluminum alloy double-friction surface layer body plate structure brake disc is heat-treated according to the corresponding heat treatment process of the 7075 aluminum alloy;

The fifth step: the silicon nitride ceramic reinforced with the two-dimensional structure periodically arranged according to the corresponding process, the 7075 aluminum alloy double-friction surface layer body plate structure brake disc, and the finished product is obtained after fine processing;

Embodiment 5 Double friction surface ventilating disc structure brake disc formed by the same metal at one time

Referring to FIGS. 3-1 and 3-2, the present invention provides a ceramic frame-reinforced light metal composite brake disc with a two-dimensional structure disorderly arranged, which comprises a metal base 1 provided with a metal base 1 Two friction surface layers 2, the metal substrate 1 comprising two metal disks and heat dissipation ribs connecting the two metal disks, the two friction surface layers 2 being respectively disposed outside the metal disk. The friction surface layer 2 is composed of a ceramic two-dimensionally structured ceramic skeleton-reinforced light metal composite material.

The ceramic skeleton in which the two-dimensional structure of the present embodiment is disorderly arranged is a silicon carbide ceramic skeleton in which the two-dimensional structure is disorderly arranged, and the light metal and metal matrix filled in the ceramic skeleton of the two-dimensional structure disorderly arranged are ZL111 aluminum alloy. This embodiment is cast as a whole low pressure, as follows:

The first step: according to the design requirements, the silicon carbide ceramic skeleton which is purchased from the two-dimensional structure of Shijiazhuang Dongda Huitong New Material Co., Ltd. is prepared according to the requirements, and the shape of the corresponding brake disc is prepared according to requirements. The surface of the ceramic is subjected to a corresponding surface treatment;

The second step: according to the shape of the brake disc, a mold for designing a brake disc of a low friction casting double friction surface ventilating disc structure is designed. The mold comprises a silicon carbide ceramic skeleton in which a two-dimensional structure is randomly arranged, and a cavity for preparing a sand core for a double friction surface ventilating disk structure brake disk;

The third step: sequentially disposing the silicon carbide ceramic skeleton and the sand core of the correspondingly shaped two-dimensional structure into the cavity of the low pressure casting machine mold in sequence and requirements;

Part 4: According to the set process, the molten ZL111 aluminum alloy is low-pressure cast into a cavity of a silicon carbide ceramic skeleton and a sand core which are arranged in a disorderly arrangement of two-dimensional structures. The specific process is as follows: when the temperature of the brake disc mold is 200-500 ° C, and the temperature of the aluminum alloy melt is 650-750 ° C, the silicon carbide ceramic skeleton and the sand core whose two-dimensional structure is disorderly arranged are sequentially placed into the low pressure according to the order and requirements. Low pressure casting begins in the cavity of the casting machine mold. In the liquid lifting stage, the pressurizing time is 1 to 12 seconds, the filling stage, the metal liquid surface rising speed is 1 to 10 mm/s, the filled aluminum alloy melt weight is 1 to 10 kg/s, and the filling time is 2 to 20 seconds. The filling supercharging speed is 0.004~0.030MPa/s; in the supercharging stage, the supercharging pressure is further increased by 0.010~0.035MPa, the dwell time is 5~60 seconds, and the pressure holding solidification stage is 20~. 500 seconds. After cooling, it is obtained that the two friction surface layers are double friction surface layer ventilating disc structure brake discs which are connected by metal and heat dissipation ribs therebetween;

The fifth step: the silicon carbide ceramic skeleton of the two-dimensional structure obtained by the low-pressure casting process is reinforced, and the ZL111 aluminum alloy double-friction surface ventilating disc structure brake disc is heat-treated according to the corresponding process of ZL111 aluminum alloy;

The sixth step: the silicon carbide ceramic skeleton of the two-dimensional structure which is heat-treated according to the corresponding process is reinforced, and the brake disc of the ZL111 aluminum alloy double-friction surface ventilating disc structure is obtained, and the finished product is obtained after fine processing.

The double friction surface ventilating disc structure brake disc prepared by the method has a weight loss of about 60% compared with the traditional steel material brake disc, and the manufacturing process is simpler and the machining allowance is less than other material brake discs. The cost is lower, the industrial production is easier, and the corresponding friction and braking conditions are well met. In today's energy-saving emission reduction, lightweight background Next, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 6 Double friction surface ventilating disc structure brake disc formed by the same metal at one time

Referring to Figures 3-1 and 3-2, a two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite brake disc includes a metal base 1 having two metal bases 1 The friction surface layer 2 comprises two metal disks and heat dissipation ribs connecting the two metal disks, and the two friction surface layers 2 are respectively disposed outside the metal disks. The friction surface layer 2 is composed of a ceramic skeleton-reinforced light metal composite material which is periodically arranged in a two-dimensional structure.

The ceramic skeleton periodically arranged in the two-dimensional structure of the present embodiment is a silicon carbide ceramic skeleton periodically arranged in a two-dimensional structure, and the light metal and the metal matrix filled in the ceramic skeleton periodically arranged in the two-dimensional structure are ZL111 aluminum alloy. This embodiment is cast as a whole low pressure, as follows:

The first step: According to the design requirements, the silicon carbide ceramic skeletons arranged in the two-dimensional structure of Shijiazhuang Dongda Huitong New Material Co., Ltd. are prepared according to the requirements to form the corresponding shape of the brake disc, and ceramics can be made according to requirements. The surface is subjected to a corresponding surface treatment;

The second step: according to the shape of the brake disc, a mold for designing a brake disc of a low friction casting double friction surface ventilating disc structure is designed. The mold comprises a silicon carbide ceramic skeleton in which a two-dimensional structure is arranged periodically, and a cavity for preparing a sand core for a double friction surface ventilating disk structure brake disk;

The third step: sequentially arranging the silicon carbide ceramic skeleton and the sand core of the corresponding shape of the two-dimensional structure into the cavity of the low-pressure casting machine mold in sequence and requirements;

Part 4: According to the set process, the molten ZL111 aluminum alloy is low-pressure cast into a cavity of a silicon carbide ceramic skeleton and a sand core arranged in a two-dimensional structure. The specific process is as follows: when the temperature of the brake disc mold is 200-500 ° C, and the temperature of the aluminum alloy melt is 650-750 ° C, the silicon carbide ceramic skeleton and the sand core arranged in a two-dimensional structure are sequentially placed into the low-pressure casting in sequence and as required. Low pressure casting begins in the cavity of the machine mold. In the liquid lifting stage, the pressurizing time is 1 to 12 seconds, the filling stage, the metal liquid surface rising speed is 1 to 10 mm/s, the filled aluminum alloy melt weight is 1 to 10 kg/s, and the filling time is 2 to 20 seconds. The filling supercharging speed is 0.004~0.030MPa/s; in the supercharging stage, the supercharging pressure is further increased by 0.010~0.035MPa, the dwell time is 5~60 seconds, and the pressure holding solidification stage is 20~. 500 seconds. After cooling, the two friction surface layers are obtained by the metal and the heat dissipation ribs and the columns are connected together by the double friction surface layer ventilating disc structure brake disc;

The fifth step: the silicon carbide ceramic skeleton arranged in the two-dimensional structure cycle obtained by the low-pressure casting process is reinforced with the ZL111 aluminum alloy double-friction surface layer ventilating disc structure brake disc, and heat-treated according to the corresponding process of ZL111 aluminum alloy;

Step 6: The silicon carbide ceramic skeleton arranged in a two-dimensional structure cycle after heat treatment according to the corresponding process is reinforced with a ZL111 aluminum alloy double-friction surface ventilating disk structure brake disc, and the finished product is obtained after fine processing.

Double friction surface ventilated disc structure brake disc prepared by the method, compared with the traditional steel material brake disc weight reduction About 60%, compared with other material brake discs, the production process is simpler, the machining allowance is less, the cost is lower, the industrial production is easier, and the corresponding friction and braking conditions can be well met. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 7 Double friction surface ventilating disc structure brake disc overmolded by the same metal

The embodiment provides a ceramic frame reinforced light metal composite brake disc with a two-dimensional structure disorderly arranged, comprising a metal base 1 provided with two friction surface layers 2, the metal base 1 comprising two A metal disk and a heat dissipation rib 3 connecting the two metal disks, the two friction surface layers 2 are respectively disposed outside the metal disk. As shown in FIG. 4, the friction surface layer 2 is composed of nine ceramic skeleton-reinforced light metal composite friction layer blocks which are randomly arranged in two dimensions.

The ceramic skeleton in which the two-dimensional structure of the present embodiment is disorderly arranged is a silicon carbide ceramic skeleton in which the two-dimensional structure is disorderly arranged, and the light metal and metal matrix filled in the ceramic skeleton of the two-dimensional structure disorderly arranged are ZL111 aluminum alloy. This embodiment is made by composite casting, as follows:

The first step: according to the design requirements, the brake disc friction surface layer is divided into 9 equal parts, and the corresponding shape of the two-dimensional structure disorderly arranged silicon carbide ceramic skeleton can be prepared, and the ceramic surface can be correspondingly treated as needed. ;

Step 2: design a pressure casting mold according to the size of the brake disc friction surface layer after 9 equal parts;

The third step: placing the prepared silicon carbide ceramic skeleton of the corresponding size and shape of the two-dimensional structure disorderly into a pressure casting mold. Then, according to the set process, the molten ZL111 aluminum alloy is pressed into a cavity of a silicon carbide ceramic skeleton in which the two-dimensional structure is disorderly arranged. After cooling, the corresponding size of the friction surface layer is obtained and taken out for use;

The fourth step: According to the size and shape of the brake disc, a sand mold capable of gravity casting a brake disc of a double friction surface ventilating disc structure is designed. The sand mold comprises a silicon carbide ceramic skeleton reinforced ZL111 aluminum alloy friction surface layer for placing a two-dimensional structure disorderly arrangement and a cavity for preparing a sand core for a double friction surface layer ventilating disk structure brake disk;

The fifth step: the ZC111 aluminum alloy friction surface layer of the silicon carbide ceramic skeleton reinforced by the two-dimensional structure disorderly arrangement and the sand core of the brake disc of the double friction surface layer ventilating disc structure are put into the gravity casting brake disc sand mold. In the cavity, the molten ZL111 aluminum alloy is poured, and after cooling, a two-dimensional structure disorderly arranged silicon carbide ceramic skeleton reinforced ZL111 aluminum alloy double friction surface layer ventilating disc structure brake disc obtained by the composite casting process is obtained;

The sixth step: the ZC111 aluminum alloy double-friction surface ventilating disc structure brake disc of the ZC111 aluminum alloy double-friction surface layer ventilating disc structure is arranged in a disorderly arrangement of the two-dimensional structure obtained by the composite casting process, and is heat-treated according to the corresponding process;

The seventh step: the silicon carbide ceramic skeleton of the two-dimensional structure which is heat-treated according to the corresponding process is reinforced, and the ZL111 aluminum alloy double-friction surface ventilating disc structure brake disc is obtained, and the finished product is obtained after fine processing.

The double friction surface ventilating disc structure brake disc prepared by the method has a weight loss of about 60% compared with the traditional steel material brake disc, and the manufacturing process is simpler and the machining allowance is less than other material brake discs. Lower cost, industrialized students The production is easier and can meet the requirements of the corresponding friction and braking conditions. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 8 Double friction surface ventilating disc structure brake disc overmolded by the same metal

The present invention provides a two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite brake disc, which comprises a metal base 1 provided with two friction surface layers 2, and the metal base 1 includes two A metal disk and a heat dissipation rib 3 connecting the two metal disks, the two friction surface layers 2 are respectively disposed outside the metal disk. As shown in FIG. 4, the friction surface layer 2 is composed of nine ceramic skeleton-reinforced light metal composite friction layer blocks which are periodically arranged in two dimensions.

The ceramic skeleton periodically arranged in the two-dimensional structure of the present embodiment is a silicon carbide ceramic skeleton periodically arranged in a two-dimensional structure, and the light metal and the metal matrix filled in the ceramic skeleton periodically arranged in the two-dimensional structure are ZL111 aluminum alloy. This embodiment is made by composite casting, as follows:

The first step: according to the design requirements, the brake disc friction surface layer is divided into 9 equal parts, and the corresponding shape of the two-dimensional structure of the periodic arrangement of the silicon carbide ceramic skeleton, the ceramic surface can be correspondingly surface treated as needed;

The third step: placing the prepared silicon carbide ceramic skeleton of the corresponding size and shape of the two-dimensional structure periodically into a pressure casting mold. Then, according to the set process, the molten ZL111 aluminum alloy is pressed into a cavity in which a silicon carbide ceramic skeleton of a two-dimensional structure is periodically arranged. After cooling, the corresponding size of the friction surface layer is obtained and taken out for use;

The fourth step: According to the size and shape of the brake disc, a sand mold capable of gravity casting a brake disc of a double friction surface ventilating disc structure is designed. The sand mold comprises a silicon carbide ceramic skeleton reinforced by a two-dimensional structure, a ZL111 aluminum alloy friction surface layer, and a cavity for preparing a sand core for the double friction surface ventilating disk structure brake disk;

Step 5: Adding the silicon carbide ceramic skeleton of the two-dimensional structure to the ZL111 aluminum alloy friction surface layer and preparing the sand core of the double friction surface ventilation disk structure brake disc into the cavity of the gravity casting brake disc sand mold In the middle, the molten ZL111 aluminum alloy is poured, and after cooling, a two-dimensional structure of the silicon carbide ceramic skeleton reinforced ZL111 aluminum alloy double friction surface layer ventilating disc structure brake disc obtained by the composite casting process is obtained;

The sixth step: the silicon carbide ceramic skeleton arranged in a two-dimensional structure cycle obtained by the composite casting process is reinforced with a ZL111 aluminum alloy double-friction surface ventilating disk structure brake disc, and heat-treated according to the corresponding process;

Step 7: The silicon carbide ceramic skeleton arranged in a two-dimensional structure periodically heat-treated according to the corresponding process is reinforced with a ZL111 aluminum alloy double-friction surface ventilating disk structure brake disc, and the finished product is obtained after fine processing.

Example 9 Single-molded single friction surface structure brake disc

The present embodiment provides a ceramic frame-reinforced light metal composite brake disk with a two-dimensional structure disorderly arranged, comprising a metal substrate 1 provided with a friction surface layer 2, the metal substrate 1 comprising a metal disk And a heat dissipation rib 3 disposed on one side of the metal disk, the friction surface layer 2 and the heat dissipation rib 3 are respectively disposed on two sides of the metal disk, that is, a friction surface layer 2 is disposed on one side of the metal disk, The metal disk has a heat dissipation rib 3 on the back side opposite to the friction surface layer 2. The friction surface layer is composed of six two-dimensional structurally disordered ceramic skeleton-reinforced light metal composite friction surface layer blocks separated by curved ventilation grooves.

The ceramic skeleton of the two-dimensional structure disordered in this embodiment is a silicon carbide ceramic skeleton in which the two-dimensional structure is disorderly arranged, and the light metal and metal matrix filled in the ceramic skeleton of the two-dimensional structure disorderly arranged are Ti-6Al- 4V titanium alloy. The specific method is as follows:

The first step: according to the design requirements, the corresponding shape of the two-dimensional structure of the disordered arrangement of silicon carbide ceramic skeleton, according to the need for the corresponding surface treatment of the ceramic surface

The second step: according to the casting characteristics and method of titanium alloy, design and prepare vent holes and riveting holes which can integrally cast various shapes, and various casting molds with set shape heat dissipation ribs on the back surface

The third step: placing the silicon carbide ceramic skeleton of the two-dimensional structure disorderly into the casting mold

The fourth step: using a conventional gravity casting process, the molten Ti-6Al-4V titanium alloy is cast into a casting mold of a silicon carbide ceramic skeleton with a two-dimensional structure disorderly arranged, and the two-dimensional structure is disorderly arranged. The silicon carbide ceramic skeleton is combined with Ti-6Al-4V titanium alloy to form a two-dimensional structural disordered silicon carbide ceramic skeleton reinforced Ti-6Al-4V titanium alloy single friction surface layer brake disc. The friction surface layer of the single friction surface structure brake disc may be a full circle or various other shapes according to design requirements.

Step 5: Reinforce the Ti-6Al-4V titanium alloy single friction surface layer brake disc with a two-dimensional structure disordered silicon carbide ceramic skeleton, which is finished by casting, according to the heat treatment process of Ti-6Al-4V titanium alloy. Heat treatment

The sixth step: the silicon carbide ceramic skeleton of the two-dimensional structure disordered by the heat treatment process of the Ti-6Al-4V titanium alloy is reinforced, and the Ti-6Al-4V titanium alloy single friction surface layer brake disc is finely processed. Finished product

The single friction surface layer brake disc prepared by the method not only loses about 60% weight compared with the traditional steel material brake disc, but also has higher strength and higher durability temperature. Compared with other materials, such as carbon-carbon and carbon-ceramic brake discs, the manufacturing process is simpler, the machining allowance is less, the cost is lower, and industrial production is easier. Compared with other light metal composite brake discs, such as aluminum alloy and magnesium alloy composite brake discs, it can withstand the friction and braking requirements under more complicated working conditions and higher temperature conditions. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

Embodiment 10 Single-friction surface structure brake disc formed at one time

The present invention provides a two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite brake disc, which comprises a metal base 1 provided with a friction surface layer 2, the metal base 1 comprising a metal disc And a heat dissipation rib 3 disposed on one side of the metal disk, the friction surface layer 2 and the heat dissipation rib 3 are respectively disposed on two sides of the metal disk, that is, a friction surface layer 2 is disposed on one side of the metal disk, The metal disk has a heat dissipation rib 3 on the back side opposite to the friction surface layer 2. The friction surface layer 2 is a ceramic skeleton reinforced light metal composite friction surface layer which is periodically arranged in a two-dimensional structure.

The ceramic skeleton periodically arranged in the two-dimensional structure of the present embodiment is a silicon carbide ceramic skeleton periodically arranged in a two-dimensional structure, and the light metal and the metal matrix filled in the ceramic skeleton periodically arranged in the two-dimensional structure are Ti-6Al-4V titanium alloy. . The specific method is as follows:

The first step: according to the design requirements, the corresponding shape of the two-dimensional structure of the periodic arrangement of the silicon carbide ceramic skeleton, according to the need for the corresponding surface treatment of the ceramic surface

The fourth step: using a conventional gravity casting process, the molten Ti-6Al-4V titanium alloy is cast into a casting mold placed in a two-dimensional structure periodically arranged silicon carbide ceramic skeleton, and the two-dimensional structure is periodically arranged in silicon carbide. The ceramic skeleton is combined with Ti-6Al-4V titanium alloy to form a SiC ceramic skeleton with a two-dimensional structure periodically arranged to strengthen the Ti-6Al-4V titanium alloy friction surface layer. The friction facing block may be a full circle or various other shapes depending on design requirements.

Step 5: Reinforce the Ti-6Al-4V titanium alloy single-friction surface layer brake disc with a two-dimensional structure periodically arranged in a single casting, and heat-treat according to the heat treatment process of Ti-6Al-4V titanium alloy.

Step 6: The silicon carbide ceramic skeleton of the Ti-6Al-4V titanium alloy single-friction surface layer is reinforced by the heat treatment process of the Ti-6Al-4V titanium alloy. Finished product

Embodiment 11 Single-friction surface layer structure brake disc of one-time forming metal mesh reinforced light metal substrate

The ceramic frame-reinforced light metal composite brake disk of the two-dimensional structure disorderly arranged includes a metal substrate 1 , and the metal substrate 1 is provided with a friction surface layer 2 , and the metal substrate 1 includes a metal Disk and set in said a heat dissipation rib 3 on one side of the metal disk, the metal substrate 1 and the heat dissipation rib 3 are respectively disposed on two sides of the metal disk, that is, a friction surface layer 2 is disposed on one side of the metal disk, and the metal disk and the friction On the opposite side of the facing layer 2, there is a heat dissipating rib 3. The friction surface layer 2 is a ceramic skeleton reinforced light metal composite friction surface layer which is disorderly arranged in a two-dimensional structure.

The ceramic skeleton of the two-dimensional structure disordered in this embodiment is a 95-alumina ceramic skeleton in which the two-dimensional structure is disorderly arranged, and the light metal and metal matrix filled in the ceramic skeleton of the two-dimensional structure disorderly arranged are A350 magnesium alloy. . The specific method is as follows:

The first step: according to the design requirements, the corresponding shape of the two-dimensional structure of the disorderly arranged 95 alumina ceramic skeleton, according to the need for the corresponding surface treatment of the ceramic surface

Step 2: According to the shape of the brake disc, a die forging die that can be integrally swaged is designed. The die forging die comprises a cavity of a 95-aluminum ceramic skeleton and a black metal mesh in which the two-dimensional structure is disorderly arranged, and a module for prefabricating the ventilation holes and the ventilation slots, and the upper mold of the mold is prepared to be integrally die-forged. Shape the shape of the heat dissipation ribs and vents

The third step: the 95-alumina ceramic skeleton in which the two-dimensional structure is disorderly arranged and the ferrous metal grid for reinforcing the A350 magnesium alloy are sequentially placed in a forging die, and the A350 magnesium alloy heated to a certain temperature is subjected to a die forging process. , forging into a 95-aluminum ceramic skeleton with a two-dimensional structure disorderly and a mold cavity of a black metal mesh, the A350 magnesium alloy and the two-dimensional structure disorderly arranged 95 alumina ceramic skeleton and ferrous metal grid Combined, a 95 Alumina ceramic skeleton reinforced A350 magnesium alloy friction surface layer with two-dimensional structure disordered arrangement is formed, and a black metal mesh reinforced A350 magnesium alloy substrate and various shapes of heat dissipation ribs and ventilation are formed in the metal matrix. Monolithic single friction surface structure brake disc

The fourth step: the A350 magnesium alloy monolithic single friction surface layer brake disc obtained by the die forging process is heat treated according to the relevant process.

Step 5: A350 magnesium alloy monolithic single friction surface layer brake disc after heat treatment according to the relevant process, finely processed to make finished product

The single friction surface layer brake disc prepared by the method has a weight loss of about 65% compared with the conventional steel material brake disc, and the manufacturing process is simpler, the machining allowance is less, and the cost is more than that of other material brake discs. Low, industrialized production is easier, and can meet the corresponding requirements of friction and braking conditions. Under the background of energy saving, emission reduction and light weight, it is undoubtedly a good substitute for traditional steel material brake discs.

It should be understood by those skilled in the art that the drawings 7-10 are only schematic and cannot be used to define the scope of the present application. The two-dimensional xy direction of the ceramic skeleton cavity unit may be any hollow shape, which can be applied to the technical solution of the present invention. And achieve the object of the present invention.

Embodiment 12 Single-friction surface layer structure brake disc of one-time forming metal mesh reinforced light metal substrate

The present invention provides a two-dimensional structure periodically arranged ceramic skeleton reinforced light metal composite brake disc, which comprises metal a base body 1, the metal base body 1 is provided with a friction surface layer 2, the metal base body 1 comprises a metal disk and a heat dissipation rib 3 disposed on one side of the metal disk, the friction surface layer 2 and the heat dissipation rib 3 They are respectively disposed on both sides of the metal disk, that is, a friction surface layer 2 is disposed on one side of the metal disk, and the metal disk has a heat dissipation rib 3 on the back side opposite to the friction surface layer 2. The friction surface layer 2 is a ceramic skeleton reinforced light metal composite friction surface layer which is periodically arranged in a two-dimensional structure.

The ceramic skeleton periodically arranged in the two-dimensional structure of the present embodiment is a 95-alumina ceramic skeleton periodically arranged in a two-dimensional structure, and the light metal and metal matrix filled in the ceramic skeleton periodically arranged in the two-dimensional structure are A350 magnesium alloy. The specific method is as follows:

The first step: according to the design requirements, prepare a corresponding shape of the two-dimensional structure of the periodic arrangement of 95 alumina ceramic skeleton, according to the need for the corresponding surface treatment of the ceramic surface

Step 2: According to the shape of the brake disc, a forging die that can be integrally swaged is designed. The forging die comprises a cavity for placing a 95-aluminum ceramic skeleton and a black metal mesh periodically arranged in a two-dimensional structure, and a prefabricated vent hole and a ventilation slot module, and the upper mold of the mold is prepared to be integrally swaged and variously designed. Shaped heat sink, heat sink and vent shape

The third step: the 95-alumina ceramic skeleton periodically arranged in a two-dimensional structure and the ferrous metal grid for reinforcing the A350 magnesium alloy are sequentially placed in a forging die, and the A350 magnesium alloy heated to a certain temperature is subjected to a die forging process. Forging into a mold cavity with a 95-aluminum ceramic skeleton and a black metal mesh arranged in a two-dimensional structure, the A350 magnesium alloy is combined with a 95-aluminum ceramic skeleton and a black metal grid periodically arranged in a two-dimensional structure. Forming a 95 Alumina ceramic skeleton reinforced A350 magnesium alloy friction surface layer with two-dimensional structure periodic arrangement, and a black metal mesh reinforced A350 magnesium alloy in the metal matrix and various shapes of heat dissipation ribs and ventilating holes Friction surface structure brake disc

In the invention, the friction surface layer comprises a plurality of composite material slabs, and the composite material slabs on the same friction surface layer may be ceramic skeleton reinforced light metal composite materials arranged in a two-dimensional structure period, or may be two-dimensional structural disorder. The arranged ceramic skeleton reinforced light metal composite material can also be a ceramic skeleton reinforced light metal composite material in which a part of the two-dimensional structure is periodically arranged, and the remaining part is a ceramic skeleton reinforced light metal composite material in which the two-dimensional structure is disorderly arranged.

The embodiments described above are only preferred embodiments of the invention, and are not exhaustive of the practice of the invention. It is to be understood by those skilled in the art that the present invention is intended to be included within the scope of the appended claims.

Claims

A two-dimensional structure-specific arrangement of ceramic skeleton-reinforced light metal composite brake discs, characterized in that it comprises a metal substrate (1) provided with one or two friction surface layers (2), The friction surface layer (2) is a ceramic skeleton-reinforced light metal composite friction surface layer which is specifically arranged in a two-dimensional structure.
The two-dimensional structure-specific arrangement of the ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the brake disc is selected from any one of the following structures:

A. The metal substrate (1) is provided with a friction surface layer (2), the metal substrate (1) comprising a metal disk and a heat dissipation rib (3) disposed on one side of the metal disk, the friction surface layer (2) and the heat dissipation ribs (3) are respectively disposed on both sides of the metal disk;

B. The metal substrate (1) is provided with two friction surface layers (2), the metal substrate (1) comprises a metal disk, and the two friction surface layers (2) are respectively disposed on both sides of the metal disk ;

C. The metal substrate (1) is provided with two friction surface layers (2), the metal substrate (1) comprising two metal disks and a connecting body connecting the two metal disks, the two friction surfaces The layers are respectively disposed on the outer side of the metal disk, and the connecting body is a heat radiating rib of various known shapes.
A two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the friction surface layer (2) is provided with a ventilation groove (4) and/or a ventilation hole (5) The ventilation groove (4) is opened in a radial direction of the friction surface layer (2), the ventilation groove (4) is linear or curved in a radial direction, and the ventilation hole (5) is along the friction surface layer The axial direction of (2) is opened, and the vent hole (5) is a through hole and/or a non-through hole.
The two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the friction surface layer (2) comprises one or more pieces of a thickness of 1 to 9 mm. The two-dimensional structure specifically aligns the ceramic skeleton to enhance the light metal composite.
The two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite material comprises a two-dimensional structure-specific arrangement A ceramic skeleton and a light metal filled in a ceramic skeleton of a particular arrangement of the two-dimensional structure.
The two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 5, wherein the two-dimensional structure-specific ceramic skeleton occupies 5~ of the area of the friction surface layer (2) 60%, the light metal accounts for 95 to 40% of the area of the friction surface layer (2).
A two-dimensional structure-specific arrangement of ceramic skeleton-reinforced light metal composite brake disc according to claim 5, wherein the two-dimensional structure-specifically arranged ceramic skeleton is selected from the group consisting of carbide ceramics, nitride ceramics, and oxides. Any one or two or more kinds of ceramics and cermets made of multiphase ceramics and sialon ceramics.
The two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 5, wherein the two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal in the light metal composite material comprises titanium, Magnesium, aluminum, and alloys thereof, and any one or a combination of two or more of light metals and alloys reinforced with other materials.
The two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the metal substrate (1) is made of a material selected from the group consisting of various ferrous metals, light metal titanium, magnesium, Aluminum or an alloy thereof, and any one or a combination of two or more of light metals and alloys reinforced with other materials.
The two-dimensional structure-specific arrangement of the ceramic skeleton-reinforced light metal composite brake disc according to claim 1, wherein the brake disc is prepared by any one of the following methods:

Method 1: placing a ceramic skeleton with a specific arrangement of two-dimensional structures into a mold, adding the heated light metal, and performing one or more moldings in a process such as extrusion, die forging, casting, etc.;

Method 2: placing a ceramic skeleton and a reinforcing metal grid with a specific arrangement of two-dimensional structures into a mold, adding the heated light metal, and forming one or more ones in a process such as extrusion, die forging, casting, etc.;

Method three:

a. The ceramic skeleton with a specific arrangement of the two-dimensional structure is first placed into a mold, and the heated light metal is added, and one or more of the processes of extrusion, die forging, casting, etc. are prepared into a composite friction surface layer;

b. Then, the heated metal matrix material is placed in a mold, and is prepared into a metal matrix by one or more of extrusion, die forging, casting, and the like;

c. Finally, the composite friction surface layer and the metal substrate are completed by one or more secondary molding processes such as inlaying, welding, composite casting, riveting, and the like;

Method four:

a. The ceramic skeleton with a specific arrangement of the two-dimensional structure is first placed into a mold, and the heated light metal is added, and one or more of the processes of extrusion, die forging, casting, etc. are prepared into a composite friction surface layer;

b. Put the reinforcing metal mesh into the mold, add the heated metal matrix material, and prepare the metal matrix by one or more of the processes of extrusion, die forging, casting, etc.

c. Finally, the composite friction surface layer and the metal substrate are completed by one or more secondary molding processes such as inlaying, welding, composite casting, riveting and the like.
A two-dimensional structure-specifically arranged ceramic skeleton-reinforced light metal composite brake disc according to any one of claims 1 to 10, wherein the two-dimensional structure-specific ceramic skeleton-reinforced light metal composite material is selected A ceramic skeleton-reinforced light metal composite material having a ceramic skeleton reinforced light metal composite material or a two-dimensional structure disorderly arranged in a two-dimensional structure;

A. Two-dimensional structure periodically arranged ceramic skeleton-reinforced light metal composite material comprises a ceramic skeleton periodically arranged in a two-dimensional structure and a light metal filled in a ceramic skeleton periodically arranged in a two-dimensional structure, and the ceramic skeleton periodically arranged in a two-dimensional structure is made of ceramic bone The cavity unit is periodically arranged;

B. Ceramic skeleton-reinforced light metal composite material with disordered arrangement of two-dimensional structure, including ceramic skeleton with two-dimensional structure disordered arrangement and light metal filled in ceramic skeleton with disordered arrangement of two-dimensional structure, ceramic skeleton with two-dimensional structure disorderly arranged It is made up of random and disorderly arrangement of ceramic skeleton cavity units.