High-roughness surface treatment method for braking steel backing

Abstract

The present application relates to a high-roughness surface treatment method for a braking steel backing, and belongs to the technical field of surface treatment of braking steel backings. The method comprises the following operation steps: step one, placing onto a feeding table a braking steel backing to be processed, and conveying the braking steel backing by means of a conveyor belt so as to perform processing; step two, in an HRT polishing assembly, sequentially passing the steel backing through an ordinary belt sander, a forward planetary gear, a reverse planetary gear and an HRT belt sander to complete the processes of surface roughness treatment and deburring; step three, in a cleaning and rust-proofing assembly, removing processing residues and a saponification liquid from the surface of the braking steel backing by means of a rough cleaning sprayer, and then an air knife I blowing off a cleaning liquid and metal residues; step four, using a rust-proofing sprayer to spray a rust-proofing liquid, and then performing double air cutting; and step five, placing the braking steel backing which has been subjected to surface treatment into a material box for standby storage. By means of treating the surface of the braking steel backing bonded with a friction material, the effects of more stable quality and high-roughness mating surfaces are achieved.

Description

Method for processing high roughness of brake steel back surface TECHNICAL FIELD

[0001] The present application relates to the technical field of brake steel back surface processing, in particular to a method for processing high roughness of brake steel back surface. BACKGROUND

[0002] With the increasing requirement of brake safety, the shear force of brake pad has become one of the key factors for measuring the performance of brake pad. To achieve higher shear force, the adhesion between friction material and brake steel back needs to be higher, which requires higher roughness on the bonding surface of brake steel back and friction material. Through analysis of test data, the roughness requirement is Ra≥2.0 or Rz≥30.

[0003] The traditional method for improving the roughness of brake steel back mainly adopts shot blasting and sand blasting process. This process can meet the requirement of brake steel back surface roughness, but has many disadvantages:

[0004] 1. Shot blasting and sand blasting process will change the product size and flatness, and the change process is random and uncontrollable, resulting in poor quality stability of the product;

[0005] 2. The control of stamping needs to be improved to reduce the stamping tolerance to ensure the qualification of the final product, which increases the quality cost by 1.5-2 times compared with the past;

[0006] 3. The working environment of shot blasting and sand blasting process is very poor, which produces a lot of dust and noise. SUMMARY

[0007] The present application mainly solves the problems in the prior art, and provides a method for processing high roughness of brake steel back surface, which has the advantages of convenient operation, good running stability and high efficiency. The problem of high dust and noise caused by increasing the surface roughness of brake steel back is solved. By processing the bonding surface of brake steel back and friction material, a more stable quality and high roughness mating surface effect are obtained.

[0008] The above technical problems of the present application are mainly solved by the following technical scheme:

[0009] A brake steel back surface processing equipment includes a conveyor belt, the front end of the conveyor belt is provided with a feeding table, the upper part of the front part of the conveyor belt is provided with an HRT polishing assembly, the upper part of the rear part of the conveyor belt is provided with a cleaning and rust prevention assembly, and the rear end of the conveyor belt is provided with a hopper.

[0010] The HRT polishing assembly comprises a common sand belt machine, a HRT sand belt machine arranged behind the common sand belt machine, a forward planetary gear and a reverse planetary gear arranged between the common sand belt machine and the HRT sand belt machine in sequence.

[0011] The rust-proof cleaning assembly comprises a rough cleaning sprayer, a rust-proof sprayer arranged at the rear end of the rough cleaning sprayer, and a pair of air cutting machines III arranged at the rear end of the rust-proof sprayer.

[0012] A processing method for brake steel back surface high roughness, comprising the following operation steps:

[0013] First step: the brake steel back to be processed is placed on a feeding table by manual or mechanical arm, and is processed by a conveying belt.

[0014] Second step: the roughness and burr removal process of the steel back surface is completed by the common sand belt machine, the forward planetary gear, the reverse planetary gear and the HRT sand belt machine in sequence in the HRT polishing assembly.

[0015] Third step: the processing residues and saponification liquid on the brake steel back surface are removed by the rough cleaning sprayer, and then the cleaning liquid and large particle metal residues on the product surface are blown off by the air knife of the air cutting machine I.

[0016] Fourth step: the rust-proof liquid is sprayed on the brake steel back surface by the rust-proof sprayer, and then the excess rust-proof agent is removed by the double air cutting of the pair of air cutting machines III, so as to solidify the rust-proof effect and dry the brake steel back.

[0017] Fifth step: the brake steel back after surface treatment is placed in a material box for storage.

[0018] Preferably, the rust-proof sprayer and the air cutting machine I are provided with a fine cleaning sprayer and an air cutting machine II arranged between the fine cleaning sprayer and the rust-proof sprayer.

[0019] Preferably, the rough cleaning sprayer, the fine cleaning sprayer and the rust-proof sprayer adopt an up-and-down spraying structure, so that the spraying area covers the whole conveying belt; the spraying liquid in the rough cleaning sprayer and the fine cleaning sprayer is composed of 3%-5% cleaning agent, so as to remove the fine metal particles and oil stains on the brake steel back surface; the spraying liquid in the rust-proof sprayer is composed of 2%-3% rust-proof agent, so as to mainly complete the rust-proof treatment of the steel back, so that the steel back achieves a water-based rust-proof effect for 1-3 months.

[0020] Preferably, the cleaning agent in the rough cleaning sprayer is composed of fatty alcohol polyoxyethylene ether and soda ash; the cleaning agent in the fine cleaning sprayer is composed of sodium carbonate, sodium metasilicate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate.

[0021] As preferred, the cleaning agent is further added with graphite oxide, titanium dioxide, styrene-based ethyl trimethoxysilane, sulfur trioxide, sodium hydroxide, sodium nitrate, sodium tripolyphosphate, nonylphenol polyoxyethylene ether or coconut oil fatty acid.

[0022] As preferred, the rust inhibitor is composed of boron trioleate amide, EDTA-4Na and glycerol.

[0023] As preferred, the rust inhibitor is further added with triethanolamine, lauric acid, adipic acid, sodium benzoate, sodium tetraborate, sodium carbonate or sodium gluconate.

[0024] As preferred, the forward planetary wheel adopts a brush disc structure processed in the clockwise direction by revolution and rotation, and is composed of 3 groups of rotating grinding discs and revolving shafts to perform the operation process of grinding the burr of the brake steel back edge; the burr grinding of the forward planetary wheel has a blind area, and the reverse planetary wheel adopts a brush disc structure processed in the counterclockwise direction by revolution and rotation, and is composed of 3 groups of rotating grinding discs and revolving shafts to compensate for the burr grinding blind area of the brake steel back of the forward planetary wheel.

[0025] As preferred, the buffer guide plate is arranged between the material box and the conveying belt to guide the brake steel back after surface treatment into the material box.

[0026] As preferred, the HRT abrasive belt used on the HRT abrasive belt machine has ceramic abrasive on the surface compared with the ordinary abrasive belt. The ceramic abrasive on the HRT abrasive belt has a fast and balanced strong material cutting rate. The grinding operation temperature is low, which avoids the phenomenon of metal discoloration, oxidation and stress cracking caused by heating. The abrasive grains in the ceramic abrasive have a self-sharpening process, which prevents the grinding from becoming dull and the load from decreasing.

[0027] The present application can achieve the following effects:

[0028] The present application provides a brake steel back surface high roughness processing method, compared with the prior art, has the advantages of convenient operation, good running stability and high efficiency. The problem of high surface roughness of brake steel back causing dust and noise is solved. By processing the bonding surface of brake steel back and friction material, the roughness process is avoided, and the effect of more stable quality and high roughness matching surface is obtained. The product stamping shape size precision, flatness precision and consistency, and the stability of the key size can reach the level of CPK1.67 or more.

[0029] The production efficiency is improved and balanced production is realized. The new process can reach 1800-2400 pieces per hour in efficiency, which is improved by 10-30% compared with the traditional process, and meets the batch production requirements of the production plant. In addition, the conveying belt is used for conveying and processing, and the intermediate storage or line-side storage is omitted to realize balanced production. Since the HRT process is integrated into the deburring process, the production process steps are reduced from the overall post-processing process steps. In addition, the conveying belt is used for conveying and processing to reduce the accumulation time between processes and the establishment of line-side storage, which can reduce the product flow and backlog time, and reduce the production personnel investment, so the production cost is greatly superior to the traditional post-processing process. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a structural schematic diagram of the present application.

[0031] Fig. 2 is a structural schematic diagram of the HRT polishing assembly of the present application.

[0032] Fig. 3 is a structural schematic diagram of the cleaning and rust-proof assembly of the present application.

[0033] In the figure: feeding table 1, HRT polishing assembly 2, conveying belt 3, cleaning and rust-proof assembly 4, buffer guide plate 5, material box 6, ordinary abrasive belt machine 7, forward planetary gear 8, reverse planetary gear 9, HRT abrasive belt machine 10, rough cleaning sprayer 11, air cutting machine I 12, fine cleaning sprayer 13, air cutting machine II 14, rust-proof sprayer 15, air cutting machine III 16. DETAILED DESCRIPTION

[0034] The technical solutions of the application will be further specifically described below by examples in combination with the drawings.

[0035] Example: as shown in Fig. 1, Fig. 2 and Fig. 3, a brake steel back surface treatment device includes a conveying belt 3, the front end of the conveying belt 3 is provided with a feeding table 1, the front part of the conveying belt 3 is provided with an HRT polishing assembly 2 above, the rear part of the conveying belt 3 is provided with a cleaning and rust-proof assembly 4 above, and the rear end of the conveying belt 3 is provided with a material box 6. The buffer guide plate 5 is arranged between the material box 6 and the conveying belt 3, and the brake steel back after surface treatment is guided into the material box 6 through the buffer guide plate 5.

[0036] The HRT polishing assembly 2 includes an ordinary abrasive belt machine 7, the rear of the ordinary abrasive belt machine 7 is provided with an HRT abrasive belt machine 10, and the ordinary abrasive belt machine 7 and the HRT abrasive belt machine 10 are sequentially provided with a forward planetary gear 8 and a reverse planetary gear 9. The HRT abrasive belt used on the HRT abrasive belt machine 10 increases ceramic abrasive on the surface compared with the ordinary abrasive belt.

[0037] The cleaning and rust-proof assembly 4 comprises a rough cleaning sprayer 11, a rust-proof sprayer 15 arranged at the rear end of the rough cleaning sprayer 11, a pair of air cutting machines III 16 arranged at the rear end of the rust-proof sprayer 15, an air cutting machine I 12 arranged between the rust-proof sprayer 15 and the rough cleaning sprayer 11, an air cutting machine II 14 arranged between the rust-proof sprayer 15 and the air cutting machine I 12, and a fine cleaning sprayer 13 arranged between the rust-proof sprayer 15 and the air cutting machine II 14.

[0038] The rough cleaning sprayer 11, the fine cleaning sprayer 13 and the rust-proof sprayer 15 all adopt the upper and lower spraying structure, so that the spraying area covers the whole conveying belt; the spraying liquid in the rough cleaning sprayer 11 and the fine cleaning sprayer 13 is composed of 3%-5% concentration cleaning agent, and the removal of fine metal particles and oil stains on the surface of the brake steel back is completed.

[0039] The cleaning agent in the rough cleaning sprayer 11 is composed of fatty alcohol polyoxyethylene ether and soda ash; the cleaning agent in the fine cleaning sprayer 13 is composed of sodium carbonate, sodium metasilicate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate. The cleaning agent further contains graphite oxide, titanium dioxide, styrene-based ethyl trimethoxysilane, sulfur trioxide, sodium hydroxide, sodium nitrate, sodium tripolyphosphate, nonylphenol polyoxyethylene ether or coconut oil fatty acid.

[0040] The spraying liquid in the rust-proof sprayer 15 is composed of 2%-3% concentration rust-proof agent, and mainly completes the rust-proof treatment of the steel back, so that the steel back achieves the water-based rust-proof effect for 1-3 months. The rust-proof agent is composed of boronamide trioleate, EDTA-4Na and glycerol. The rust-proof agent further contains triethanolamine, lauric acid, adipic acid, sodium benzoate, sodium tetraborate, sodium carbonate or sodium gluconate.

[0041] A treatment method for the high roughness of the surface of a brake steel back, comprising the following operation steps:

[0042] First step: the brake steel back to be processed is placed on the feeding table 1 by artificial or mechanical arm mechanical form, and the brake steel back is processed and run by the conveying belt 3.

[0043] Second step: the surface roughness and deburring process of the steel back are completed in the HRT polishing assembly 2 in sequence through the ordinary sand belt machine 7, the forward planetary gear 8, the reverse planetary gear 9 and the HRT sand belt machine 10. The ordinary sand belt machine 7 removes the stamping burrs of the product by using 20-80 mesh conventional sand belt. The HRT sand belt machine 10 grinds the roughness of the end face of the brake steel back by using HRT sand belt.

[0044] The forward planetary wheel 8 adopts a brush disc structure processed in the clockwise direction by revolution and rotation, has three groups of rotating grinding discs and revolution shafts, and performs the operation process of grinding the burrs on the edge of the brake steel back; the burr grinding of the forward planetary wheel 8 has a blind area, and the reverse planetary wheel 9 adopts a brush disc structure processed in the counterclockwise direction by revolution and rotation, has three groups of rotating grinding discs and revolution shafts, and performs the operation process of grinding the burrs on the edge of the brake steel back.

[0045] The third step is that the rust-proof assembly 4 removes the machining residues and saponification liquid on the surface of the brake steel back through the rough cleaning sprayer 11, then the air knife of the air knife machine I 12 blows off the cleaning liquid and large-particle metal residues on the surface of the product, and then the fine cleaning sprayer 13 removes the fine metal particles and oil stains on the surface of the brake steel back, and the air knife of the air knife machine II 14 blows off the cleaning liquid and remaining metal residues on the surface of the product.

[0046] The fourth step is that the rust-proof sprayer 15 sprays the rust-proof liquid on the surface of the brake steel back, and then the double air knife of the air knife machine III 16 removes the excess rust-proof agent on the product, solidifies the rust-proof effect, and dries the brake steel back.

[0047] The fifth step is that the brake steel back after surface treatment is placed in the hopper 6 for storage.

[0048] As described above, the brake steel back surface high-roughness treatment method has the advantages of convenient operation, good running stability and high efficiency. The problem of large dust and noise caused by the increase of the surface roughness of the brake steel back is solved. By treating the bonding surface between the brake steel back and the friction material, the roughness process is avoided, and the effect of a more stable quality and high-roughness matching surface is obtained.

[0049] An after-manufacturing brake back plate manufacturing process is developed to realize automatic batch production in production, and the efficiency and quality meet the needs of the production factory. The process covers deburring, chamfering, roughening, cleaning, drying and other processes, and is completed through a high-roughness surface treatment device and a cleaning and drying device.

[0050] The above only describes specific embodiments of the present application, but the structural characteristics of the present application are not limited to this. Any changes or modifications made by those skilled in the art in the field of the present application are covered by the patent scope of the present application.

Claims

1. A method of treating the high roughness of a brake steel back surface, characterized by: The brake steel back surface treatment equipment includes a conveying belt (3), the front end of the conveying belt (3) is provided with a feeding table (1), the front part of the conveying belt (3) is provided with an HRT polishing assembly (2) above, the rear part of the conveying belt (3) is provided with a cleaning and rust prevention assembly (4) above, and the rear end of the conveying belt (3) is provided with a material box (6). The HRT polishing assembly (2) includes a common sand belt machine (7), the rear of the common sand belt machine (7) is provided with an HRT sand belt machine (10), and the common sand belt machine (7) and the HRT sand belt machine (10) are sequentially provided with a forward planetary gear (8) and a reverse planetary gear (9) therebetween. The cleaning and rust prevention assembly (4) includes a rough cleaning sprayer (11), the rear end of the rough cleaning sprayer (11) is provided with a rust prevention sprayer (15), the rear end of the rust prevention sprayer (15) is provided with a pair of air cutting machines III (16), and the rust prevention sprayer (15) and the rough cleaning sprayer (11) are provided with an air cutting machine I (12) therebetween. The brake steel back surface high roughness treatment method comprises the following operation steps: Step 1: the brake steel back to be processed is placed on the feeding table (1) by artificial or mechanical arm, and the brake steel back is processed by the conveying belt (3); Step 2: the roughness and deburring process of the steel back surface are completed by the common sand belt machine (7), the forward planetary gear (8), the reverse planetary gear (9) and the HRT sand belt machine (10) in the HRT polishing assembly (2) in sequence; Step 3: the processing residues and saponification liquid on the brake steel back surface are removed by the rough cleaning sprayer (11) in the cleaning and rust prevention assembly (4), then the cleaning liquid and large particle metal residues on the product surface are blown off by the air cutting machine I (12) by using the air knife; Step 4: the rust prevention liquid is sprayed on the brake steel back surface by the rust prevention sprayer (15), then the excess rust prevention agent of the product is removed by the pair of air cutting machines III (16), the rust prevention effect is solidified, and the brake steel back is dried; Step 5: the brake steel back after surface treatment is placed in the material box (6) for storage.

2. The method of treating the high roughness of the brake steel back surface according to claim 1, characterized in that: The rust prevention sprayer (15) and the air cutting machine I (12) are provided with a fine cleaning sprayer (13) therebetween, and the fine cleaning sprayer (13) and the rust prevention sprayer (15) are provided with an air cutting machine II (14) therebetween.

3. The method of treating the high roughness of the brake steel back surface according to claim 2, characterized by: The rough cleaning sprayer (11), the fine cleaning sprayer (13) and the rust prevention sprayer (15) all adopt the upper and lower opposite spraying structure, so that the spraying area covers the whole conveying belt; the spraying liquid in the rough cleaning sprayer (11) and the fine cleaning sprayer (13) is composed of 3%-5% concentration cleaning agent, and the fine metal particles and oil stains on the brake steel back surface are removed; the spraying liquid in the rust prevention sprayer (15) is composed of 2%-3% concentration rust prevention agent, and the rust prevention treatment of the steel back is mainly completed, so that the steel back reaches the water-based rust prevention effect for 1-3 months.

4. The method of treating the high roughness of the brake steel back surface according to claim 3, characterized by: The cleaning agent in the rough cleaning sprayer (11) is composed of fatty alcohol polyoxyethylene ether and soda ash; the cleaning agent in the fine cleaning sprayer (13) is composed of sodium carbonate, sodium metasilicate, fatty alcohol polyoxyethylene ether and sodium dodecylbenzenesulfonate.

5. The method of treating the high roughness of the brake steel back surface according to claim 4, characterized in that: The cleaning agent further comprises graphite oxide, titanium dioxide, styrylethyltrimethoxysilane, sulfur trioxide, sodium hydroxide, sodium nitrate, sodium tripolyphosphate, nonylphenol polyoxyethylene ether or coconut oil fatty acid.

6. The method of treating the high roughness of the brake steel back surface according to claim 3, characterized by: The rust preventive is composed of boron trioleate amide, EDTA-4Na and glycerol.

7. The method of treating the high roughness of the brake steel back surface according to claim 6, characterized by: The rust preventive further comprises triethanolamine, lauric acid, adipic acid, sodium benzoate, sodium tetraborate, sodium carbonate or sodium gluconate.

8. The method of treating the high roughness of the brake steel back surface according to claim 1, characterized by: The forward planetary wheel (8) adopts a brush disc structure processed in the clockwise direction by revolution and rotation, has three groups of rotating grinding discs and a revolving shaft, and performs an operation process of grinding burrs on the edge of the brake steel back; the burr grinding of the forward planetary wheel (8) has a blind area, and the reverse planetary wheel (9) adopts a brush disc structure processed in the counterclockwise direction by revolution and rotation, has three groups of rotating grinding discs and a revolving shaft, and performs compensation grinding on the burr grinding blind area of the brake steel back of the forward planetary wheel.

9. The method of treating the high roughness of the brake steel back surface according to claim 1, characterized in that: The buffer guide plate (5) is arranged between the material box (6) and the conveying belt (3), and the brake steel back subjected to surface treatment is guided into the material box (6) through the buffer guide plate (5).

10. The method of treating the high roughness of the brake steel back surface according to claim 1, characterized in that: The HRT abrasive belt used on the HRT abrasive belt machine (10) has ceramic abrasive on the surface compared with the ordinary abrasive belt.

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