CN107747592A - A kind of copper-based bearing shell with toughness reinforcing intermediate layer and preparation method thereof - Google Patents

A kind of copper-based bearing shell with toughness reinforcing intermediate layer and preparation method thereof Download PDF

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Publication number
CN107747592A
CN107747592A CN201711008534.9A CN201711008534A CN107747592A CN 107747592 A CN107747592 A CN 107747592A CN 201711008534 A CN201711008534 A CN 201711008534A CN 107747592 A CN107747592 A CN 107747592A
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China
Prior art keywords
copper
intermediate layer
shell
toughness reinforcing
reinforcing intermediate
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CN201711008534.9A
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Chinese (zh)
Inventor
裴夤崟
郭艳红
钟素娟
龙伟民
张冠星
马佳
沈元勋
董博文
黄俊兰
薛行雁
潘建军
于新泉
丁天然
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Zhengzhou Research Institute of Mechanical Engineering Co Ltd
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Zhengzhou Research Institute of Mechanical Engineering Co Ltd
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Priority to CN201711008534.9A priority Critical patent/CN107747592A/en
Publication of CN107747592A publication Critical patent/CN107747592A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/125—Details of bearing layers, i.e. the lining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/127—Details of intermediate layers, e.g. nickel dams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/10—Alloys based on copper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/06—Shaping by casting in situ casting or moulding

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Laminated Bodies (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

A kind of copper-based bearing shell with toughness reinforcing intermediate layer and preparation method thereof, bearing shell include copper shell, toughness reinforcing intermediate layer and karmarsch alloy layer, and the preparation method of bearing shell includes：Prepare copper shell and karmarsch alloy；Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxide-film are carried out to copper shell surface, it is clean with washes of absolute alcohol, then acid activation copper shell surface；The toughness reinforcing intermediate layer that thickness is 30 ~ 100 μm is formed in the inner surface of treated copper shell, the composition in toughness reinforcing intermediate layer is pure nickel；The casting karmarsch alloy layer on toughness reinforcing intermediate layer, and uniform groove is set on the inwall of karmarsch alloy layer, the depth of groove is the 1/5 ~ 1/3 of karmarsch alloy thickness；Subzero treatment finally is carried out to bearing shell.The present invention is by by setting toughness reinforcing intermediate layer, avoiding the generation Cu that reacted at karmarsch alloy and copper shell faying face6Sn5Brittlement phase, improve the bond strength between karmarsch alloy and copper shell.

Description

A kind of copper-based bearing shell with toughness reinforcing intermediate layer and preparation method thereof
Technical field
The present invention relates to bearing shell technical field, is specifically related to a kind of with the copper-based bearing shell in toughness reinforcing intermediate layer and its preparation side Method.
Background technology
Bearing shell is one of important spare part in internal combustion engine, and its performance not only influences the performance of internal combustion engine, work with structure Reliability and life-span, and the structure design of internal combustion engine in itself is influenceed, with the rapid development of transportation, engine is increasingly Develop to high speed, high-power, low energy consumption, lightweight, high pressure-charging reinforcing and environmental protection direction, to as the important accessory of internal combustion engine it One bearing shell proposes higher requirement, such as：Fatigue strength is high, wearability is good, seizure resistance is good, corrosion resistance is good, mosaicism Well, compliance is good and with feature of environmental protection etc..At present, bush material mainly has two kinds, and one kind is aluminum-based alloy material, and another kind is Copper-based alloy material, wherein aluminum-based alloy material have medium fatigue strength and a bearing capacity, good corrosion resistance, preferably Bearing surface performance, copper-based alloy material have the spy such as very high fatigue strength and bearing capacity, preferable bearing surface performance Point.The bearing metal of the bush material of early stage is the eutectic that grit phase is dispersed with a kind of soft matrix based on bus alloy Point alloy, divides three tinbase, lead base, cadmium base series, and wherein karmarsch alloy is more suitable for the material rotated relative to soft axle Material, compared with other bearing materials, there is more preferable adaptability and embeddability, be widely used at a high speed, heavy duty, high accuracy, greatly In the plant equipment of power, it is large and medium motor, steam turbine, the hydraulic turbine, generator, industrial pump, air blower, compressor, rolls The critical component of the plant equipment such as steel machine, gear-box, coal pulverizer；Tinbase and lead-base bearing alloy quality is soft, low intensity, is not suitable for Integral bearing is manufactured, but they are cast on the bearing shells such as bronze, box hat or cast iron, as bi-metal shaft bushing material.
Babbitt Metal technical process is divided into the cleaning of watt tire, the protection of watt state, wards off 5 tin, alloy melting, cast works Skill.For base steel bearing shell, immersed in the prior art generally by by box hat in pure tin liquation（Tin and iron are at 300 DEG C or so Easily generation iron tin compound）, there is preferable wetability, particularly tin and bearing to close to carbon steel and bearing metal using tin Gold can be molten altogether, and bearing metal is cast in into carbon steel surface using pure tin as transition zone.And to copper-based bearing shell, because tin-base bearing Alloy and copper faying face, which react, easily generates Cu6Sn5Brittlement phase, therefore the bond strength of karmarsch alloy and copper is poor（No Higher than 30Mpa）, it is difficult to cast directly over above copper shell, can not be still firmly bonded to above copper shell by increasing tin transition zone.
The content of the invention
The purpose of invention is deficiency in order to solve the above-mentioned technical problem, there is provided a kind of copper-based bearing shell with toughness reinforcing intermediate layer And preparation method thereof, by setting toughness reinforcing intermediate layer, avoid the life that reacted at karmarsch alloy and copper shell faying face Into Cu6Sn5Brittlement phase, improve the bond strength between karmarsch alloy and copper shell.
The present invention is for the insufficient technical scheme that uses for solving above-mentioned technical problem：A kind of copper with toughness reinforcing intermediate layer Standard shaft watt, including the sandwich construction formed by copper shell, pure-nickel-layer and karmarsch alloy layer, the copper shell are located at the copper The outer layer of standard shaft watt, the pure-nickel-layer are arranged on the inwall of the copper shell, and are formed among the toughness reinforcing of the copper-based bearing shell Layer, the karmarsch alloy layer is arranged on the pure-nickel-layer, and forms the internal layer of the copper-based bearing shell, described tinbase axle The inwall for holding alloy-layer is provided with uniform groove.
Preferably, described groove is one kind of dovetail groove or square groove.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, and set uniformly on the inwall of karmarsch alloy layer Groove, the depth of the groove are the 1/5 ~ 1/3 of the karmarsch alloy thickness degree；
（5）By step（4）Bearing shell carry out subzero treatment, you can be made the copper-based bearing shell with toughness reinforcing intermediate layer.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is galvanoplastic, by step（2）Copper after processing Outer surface insulation film and adhesive tape the winding closing of housing, are suspended on machine frame, and are put into nickel bath, not contact plating The bottom of groove, electroplate liquid is added, liquid level is less than the high 5cm ~ 10cm of cell wall, and is higher than copper shell 5cm ~ 10cm, and nickel rod is placed on The center of copper shell is electroplated, and electroplating time is 30 ~ 40min, and it is 30 μm ~ 100 μ to form thickness in copper shell inner surface M pure nickel toughness reinforcing intermediate layer.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is supersonic spray coating method, by step（2）Processing Copper shell afterwards is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 120 DEG C ~ 130 DEG C, is taken out copper shell and is carried out Supersonic Speed spraying, the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm is formed in copper shell inner surface.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is plasma cladding method, by step（2）Processing Copper shell afterwards is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 500 DEG C ~ 550 DEG C, is then taken out as molten bath, together When by nickel powder powder material be sent into plasma arc in, powder preheats in arc column, in fusing or semi-molten state, by flame stream spray to Go out gas and slag as heel row on the copper shell in molten bath, is fully melted, spray gun is removed rear alloy pool and gradually solidified, in copper shell The overlay that thickness is 30 μm ~ 100 μm, as pure nickel toughness reinforcing intermediate layer are formed on body.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is argon arc remelting method, by step（2）After processing Copper shell be placed in high temperature furnace, under the conditions of 500 DEG C ~ 550 DEG C preheat 30min ~ 35min, reuse argon arc welding machine by nickel bar On the inner surface of the copper shell of fusing tiling after preheat, the uniform melt layer that thickness is 30 μm ~ 100 μm, as pure nickel are formed Toughness reinforcing intermediate layer.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is furnace brazing method, first cleans pricker with acetone Material, then nickel metal powder is cold-pressed into sheet, it is assembled in step（2）The inner surface of copper shell after processing, then by after assembling Copper shell assembly is put into vacuum brazing furnace, 1050 DEG C ~ 1080 DEG C is heated under 0.1Pa ~ 0.12Pa vacuum, insulation Furnace cooling after 20min ~ 25min, nickel metal powder is formed the pure nickel that thickness is 30 μm ~ 100 μm on copper shell inner surface and increase Tough intermediate layer.
Preferably, the step（5）Middle subzero treatment process is：By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C Liquid nitrogen in handle 2h ~ 3h, be warming up to room temperature after taking-up.
The beneficial effects of the invention are as follows：
A kind of copper-based bearing shell with toughness reinforcing intermediate layer of the present invention, before the cast of karmarsch alloy is carried out, in copper shell Pure nickel toughness reinforcing intermediate layer is set up on body, avoids generating Cu at the combination interface of karmarsch alloy and copper shell6Sn5Brittlement phase, from And the intensity and toughness of bearing metal combination interface are improved, a kind of copper-based bearing shell with toughness reinforcing intermediate layer of the present invention, its The average bonding strength of karmarsch alloy and copper shell is more than 67MPa；
A kind of copper-based bearing shell with toughness reinforcing intermediate layer of the present invention, it is provided with the inwall of karmarsch alloy layer uniform Groove, due to the presence of groove, effectively increase bearing shell loaded area, both improved the bullet tension force of inner surface of bearing bush, and effectively Decompose the force of explosion of the cylinder during bearing shell use in ground；The presence bearing shell of groove slow down lubricating oil and axially be flowed along bearing shell simultaneously Dynamic speed, be advantageous to keep oil film pressure, so as to enhance the bearing capacity of bearing shell；
A kind of preparation method of copper-based bearing shell with toughness reinforcing intermediate layer of the present invention, subzero treatment is carried out to bearing shell, be placed in- 2h ~ 3h is handled in 170 DEG C~-180 DEG C of liquid nitrogen, is warming up to room temperature after taking-up, the processing can change the crystal grain of bush material Orientation, undergoes phase transition material surface tissue, crystal grain thinning, eliminates material internal stress, improves the tissue on bush material surface Structure, so as to improve the hardness of material, intensity, wearability and corrosion stability.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, not Form inappropriate limitation of the present invention.
Fig. 1 is the structural representation of the copper-based bearing shell with toughness reinforcing intermediate layer；
Fig. 2 inwalls set the partial structural diagram of the karmarsch alloy layer of dovetail groove；
Fig. 3 is the partial structural diagram for the karmarsch alloy layer that inwall sets square groove；
Reference：1st, copper shell, 2, pure-nickel-layer, 3, karmarsch alloy layer, 4, groove, 401, dovetail groove, 402, square groove.
Embodiment
With reference to specific embodiment, the present invention is further elaborated.Its specific embodiment is：
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, including formed by copper shell 1, pure-nickel-layer 2 and karmarsch alloy layer 3 more Rotating fields, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the inwall of the copper shell 1 On, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure-nickel-layer 2, and shape Into the internal layer of the copper-based bearing shell, the inwall of described karmarsch alloy layer 3 is provided with uniform groove 4.
Preferably, described groove 4 is one kind of dovetail groove 401 or square groove 402.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and pure nickel toughness reinforcing intermediate layer is set up on copper shell, avoids the combination of karmarsch alloy and copper shell Interface generates Cu6Sn5Brittlement phase, so as to improve the intensity of bearing metal combination interface and toughness；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, and set uniformly on the inwall of karmarsch alloy layer Groove, the depth of the groove are the 1/5 ~ 1/3 of the karmarsch alloy thickness degree；On the inwall of karmarsch alloy layer Provided with uniform groove, due to the presence of groove, effectively increase bearing shell loaded area, both improve the bullet of inner surface of bearing bush Power, and effectively decompose the force of explosion of the cylinder during bearing shell use；The presence bearing shell of groove slow down lubricating oil edge simultaneously Bearing shell axial flow velocity, be advantageous to keep oil film pressure, so as to enhance the bearing capacity of bearing shell；
（5）By step（4）Bearing shell carry out subzero treatment, you can be made the copper-based bearing shell with toughness reinforcing intermediate layer, to bearing shell carry out Subzero treatment, processing 2h ~ 3h in -170 DEG C~-180 DEG C of liquid nitrogen is placed in, is warming up to room temperature after taking-up, the processing can change The crystal grain orientation of bush material, undergoes phase transition material surface tissue, crystal grain thinning, eliminates material internal stress, improve bearing shell The institutional framework of material surface, so as to improve the hardness of material, intensity, wearability and corrosion stability.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is galvanoplastic, by step（2）Copper after processing Outer surface insulation film and adhesive tape the winding closing of housing, are suspended on machine frame, and are put into nickel bath, not contact plating The bottom of groove, electroplate liquid is added, liquid level is less than the high 5cm ~ 10cm of cell wall, and is higher than copper shell 5cm ~ 10cm, and nickel rod is placed on The center of copper shell is electroplated, and electroplating time is 30min ~ 40min, copper shell inner surface formed thickness be 30 μm ~ 100 μm of pure nickel toughness reinforcing intermediate layer.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is supersonic spray coating method, by step（2）Processing Copper shell afterwards is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 120 DEG C ~ 130 DEG C, is taken out copper shell and is carried out Supersonic Speed spraying, the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm is formed in copper shell inner surface.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is plasma cladding method, by step（2）Processing Copper shell afterwards is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 500 DEG C ~ 550 DEG C, is then taken out as molten bath, together When by nickel powder powder material be sent into plasma arc in, powder preheats in arc column, in fusing or semi-molten state, by flame stream spray to Go out gas and slag as heel row on the copper shell in molten bath, is fully melted, spray gun is removed rear alloy pool and gradually solidified, in copper shell The overlay that thickness is 30 μm ~ 100 μm, as pure nickel toughness reinforcing intermediate layer are formed on body.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is argon arc remelting method, by step（2）After processing Copper shell be placed in high temperature furnace, under the conditions of 500 DEG C ~ 550 DEG C preheat 30min ~ 35min, reuse argon arc welding machine by nickel bar On the inner surface of the copper shell of fusing tiling after preheat, the uniform melt layer that thickness is 30 μm ~ 100 μm, as pure nickel are formed Toughness reinforcing intermediate layer.
Preferably, the step（3）The preparation technology in middle toughness reinforcing intermediate layer is furnace brazing method, first cleans pricker with acetone Material, then nickel metal powder is cold-pressed into sheet, it is assembled in step（2）The inner surface of copper shell after processing, then by after assembling Copper shell assembly is put into vacuum brazing furnace, 1050 DEG C ~ 1080 DEG C is heated under 0.1Pa ~ 0.12Pa vacuum, insulation Furnace cooling after 20min ~ 25min, nickel metal powder is formed the pure nickel that thickness is 30 μm ~ 100 μm on copper shell inner surface and increase Tough intermediate layer.
Preferably, the step（5）Middle subzero treatment process is：By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C Liquid nitrogen in handle 2h ~ 3h, be warming up to room temperature after taking-up.
Embodiment 1
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, as shown in figure 1, including by copper shell 1, pure-nickel-layer 2 and karmarsch alloy The sandwich construction that layer 3 is formed, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the copper shell On the inwall of body 1, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure nickel On layer 2, and the internal layer of the copper-based bearing shell is formed, as shown in Fig. 2 the inwall of described karmarsch alloy layer 3 is provided with Even groove 4, described groove 4 are dovetail groove 401.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and the preparation technology in the toughness reinforcing intermediate layer is galvanoplastic, by step（2）Copper shell after processing it is outer Surface insulation film and adhesive tape winding closing, are suspended on machine frame, and are put into nickel bath, not the bottom of contact plating groove Portion, electroplate liquid is added, liquid level is less than the high 5cm ~ 10cm of cell wall, and is higher than copper shell 5cm ~ 10cm, and nickel rod is placed on into copper shell Center electroplated, electroplating time is 30min ~ 40min, and it is 30 μm ~ 100 μm to form thickness in copper shell inner surface Pure nickel toughness reinforcing intermediate layer；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, the inwall of described karmarsch alloy layer are provided with uniformly Groove, described groove is dovetail groove；
（5）By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen progress subzero treatment 2h ~ 3h, heated up after taking-up To room temperature, you can the copper-based bearing shell with toughness reinforcing intermediate layer is made.
Embodiment 2
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, as shown in figure 1, including by copper shell 1, pure-nickel-layer 2 and karmarsch alloy The sandwich construction that layer 3 is formed, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the copper shell On the inwall of body 1, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure nickel On layer 2, and the internal layer of the copper-based bearing shell is formed, as shown in Fig. 2 the inwall of described karmarsch alloy layer 3 is provided with Even groove 4, described groove 4 are dovetail groove 401.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and the preparation technology in the toughness reinforcing intermediate layer is supersonic spray coating method, by step（2）Copper shell after processing Body is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 120 DEG C ~ 130 DEG C, is taken out copper shell and is carried out supersonic spray coating, Copper shell inner surface forms the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, the inwall of described karmarsch alloy layer are provided with uniformly Groove, described groove is dovetail groove；
（5）By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen progress subzero treatment 2h ~ 3h, heated up after taking-up To room temperature, you can the copper-based bearing shell with toughness reinforcing intermediate layer is made.
Embodiment 3
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, as shown in figure 1, including by copper shell 1, pure-nickel-layer 2 and karmarsch alloy The sandwich construction that layer 3 is formed, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the copper shell On the inwall of body 1, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure nickel On layer 2, and the internal layer of the copper-based bearing shell is formed, as shown in figure 3, the inwall of described karmarsch alloy layer 3 is provided with Even groove 4, described groove 4 are square groove 402.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, the bearing shell include the copper shell positioned at outer layer, position In the toughness reinforcing intermediate layer in intermediate layer and the karmarsch alloy layer positioned at internal layer, the preparation method of the bearing shell includes following step Suddenly：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and the preparation technology in the toughness reinforcing intermediate layer is plasma cladding method, by step（2）Copper shell after processing Body is placed in high temperature furnace, and 30min ~ 35min is preheated under the conditions of 500 DEG C ~ 550 DEG C, is then taken out as molten bath, while by nickel powder Powder material is sent into plasma arc, and powder preheats in arc column, in fusing or semi-molten state, is sprayed by flame stream to as molten bath Copper shell on, fully melt heel row go out gas and slag, spray gun is removed rear alloy pool and gradually solidified, formed on copper shell Thickness is 30 μm ~ 100 μm of overlay, as pure nickel toughness reinforcing intermediate layer；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, the inwall of described karmarsch alloy layer are provided with uniformly Groove, described groove is square groove；
（5）By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen progress subzero treatment 2h ~ 3h, heated up after taking-up To room temperature, you can the copper-based bearing shell with toughness reinforcing intermediate layer is made.
Embodiment 4
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, as shown in figure 1, including by copper shell 1, pure-nickel-layer 2 and karmarsch alloy The sandwich construction that layer 3 is formed, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the copper shell On the inwall of body 1, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure nickel On layer 2, and the internal layer of the copper-based bearing shell is formed, as shown in figure 3, the inwall of described karmarsch alloy layer 3 is provided with Even groove 4, described groove 4 are square groove 402.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and the preparation technology in the toughness reinforcing intermediate layer is argon arc remelting method, by step（2）Copper shell after processing It is placed in high temperature furnace, 30min ~ 35min is preheated under the conditions of 500 DEG C ~ 550 DEG C, reuses argon arc welding machine and nickel bar is melted into tiling On the inner surface of copper shell after preheat, the uniform melt layer that thickness is 30 μm ~ 100 μm is formed, as among pure nickel toughness reinforcing Layer；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, the inwall of described karmarsch alloy layer are provided with uniformly Groove, described groove is square groove；
（5）By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen progress subzero treatment 2h ~ 3h, heated up after taking-up To room temperature, you can the copper-based bearing shell with toughness reinforcing intermediate layer is made.
Embodiment 5
A kind of copper-based bearing shell with toughness reinforcing intermediate layer, as shown in figure 1, including by copper shell 1, pure-nickel-layer 2 and karmarsch alloy The sandwich construction that layer 3 is formed, the copper shell 1 are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer 2 is arranged on the copper shell On the inwall of body 1, and the toughness reinforcing intermediate layer of the copper-based bearing shell is formed, the karmarsch alloy layer 3 is arranged on the pure nickel On layer 2, and the internal layer of the copper-based bearing shell is formed, as shown in figure 3, the inwall of described karmarsch alloy layer 3 is provided with Even groove 4, described groove 4 are square groove 402.
A kind of preparation method of the copper-based bearing shell with toughness reinforcing intermediate layer, comprises the following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel, and the preparation technology in the toughness reinforcing intermediate layer is furnace brazing method, first cleans solder with acetone, then by nickel Metal powder is cold-pressed into sheet, is assembled in step（2）The inner surface of copper shell after processing, then the copper shell after assembling is assembled Part is put into vacuum brazing furnace, is heated to 1050 DEG C ~ 1080 DEG C under 0.1Pa ~ 0.12Pa vacuum, and insulation 20min ~ Furnace cooling after 25min, nickel metal powder is set to be formed on copper shell inner surface among the pure nickel toughness reinforcing that thickness is 30 μm ~ 100 μm Layer；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, the inwall of described karmarsch alloy layer are provided with uniformly Groove, described groove is square groove；
（5）By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen progress subzero treatment 2h ~ 3h, heated up after taking-up To room temperature, you can the copper-based bearing shell with toughness reinforcing intermediate layer is made.
Use the toughness reinforcing intermediate layer of the present invention so that bearing metal and copper shell average bonding strength are more than 67MPa, big Bond strength is more than 58MPa in batch production bearing.
The foregoing description of the disclosed embodiments, only for enabling professional and technical personnel in the field to realize or using this Invention.A variety of modifications to these embodiments will be apparent for those skilled in the art, institute herein The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty The consistent most wide scope of point.

Claims (9)

1. a kind of copper-based bearing shell with toughness reinforcing intermediate layer, it is characterised in that including by copper shell, pure-nickel-layer and karmarsch alloy The sandwich construction that layer is formed, the copper shell are located at the outer layer of the copper-based bearing shell, and the pure-nickel-layer is arranged on the copper shell Inwall on, and form the toughness reinforcing intermediate layer of the copper-based bearing shell, the karmarsch alloy layer is arranged on the pure-nickel-layer, And the internal layer of the copper-based bearing shell is formed, the inwall of described karmarsch alloy layer is provided with uniform groove.
2. a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 1, it is characterised in that described groove is ladder One kind of shape groove or square groove.
A kind of 3. preparation method of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 1, it is characterised in that including Following steps：
（1）Prepare the copper shell and karmarsch alloy of bearing shell；
（2）Ungrease treatment, mechanical sandblasting wharf's pavement quality, caustic dip removal surface oil stain and oxidation are carried out to copper shell surface Film, it is then clean with washes of absolute alcohol, then acid activation copper shell surface；
（3）Thickness is formed as 30 μm ~ 100 μm of toughness reinforcing intermediate layer in the inner surface of treated copper shell, in described toughness reinforcing The composition of interbed is pure nickel；
（4）The casting karmarsch alloy layer on toughness reinforcing intermediate layer, and set uniformly on the inwall of karmarsch alloy layer Groove, the depth of the groove are the 1/5 ~ 1/3 of the karmarsch alloy thickness degree；
（5）By step（4）Bearing shell carry out subzero treatment, you can be made the copper-based bearing shell with toughness reinforcing intermediate layer.
4. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（3）The preparation technology in middle toughness reinforcing intermediate layer is galvanoplastic, by step（2）The outer surface insulation of copper shell after processing is thin Film and adhesive tape winding closing, are suspended on machine frame, and are put into nickel bath, and the bottom of contact plating groove, does not add electroplate liquid, Liquid level is less than the high 5cm ~ 10cm of cell wall, and is higher than copper shell 5cm ~ 10cm, and the center that nickel rod is placed on to copper shell is carried out Plating, electroplating time is 30 ~ 40min, and the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm is formed in copper shell inner surface.
5. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（3）The preparation technology in middle toughness reinforcing intermediate layer is supersonic spray coating method, by step（2）Copper shell after processing is placed on high temperature furnace In, 30min ~ 35min is preheated under the conditions of 120 DEG C ~ 130 DEG C, copper shell is taken out and carries out supersonic spray coating, in copper shell inner surface Form the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm.
6. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（3）The preparation technology in middle toughness reinforcing intermediate layer is plasma cladding method, by step（2）Copper shell after processing is placed on high temperature furnace In, under the conditions of 500 DEG C ~ 550 DEG C preheat 30min ~ 35min, then take out as molten bath, at the same by nickel powder powder material be sent into etc. In ion arc, powder preheats in arc column, in fusing or semi-molten state, is sprayed by flame stream to the copper shell as molten bath, Fully fusing heel row go out gas and slag, spray gun is removed rear alloy pool and gradually solidified, on copper shell formed thickness be 30 μm ~ 100 μm of overlay, as pure nickel toughness reinforcing intermediate layer.
7. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（3）The preparation technology in middle toughness reinforcing intermediate layer is argon arc remelting method, by step（2）Copper shell after processing is placed on high temperature furnace In, 30min ~ 35min is preheated under the conditions of 500 DEG C ~ 550 DEG C, argon arc welding machine is reused and nickel bar fusing is tiled after preheat On the inner surface of copper shell, the uniform melt layer that thickness is 30 μm ~ 100 μm, as pure nickel toughness reinforcing intermediate layer are formed.
8. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（3）The preparation technology in middle toughness reinforcing intermediate layer is furnace brazing method, first cleans solder with acetone, then nickel metal powder is cold-pressed into Sheet, it is assembled in step（2）The inner surface of copper shell after processing, the copper shell assembly after assembling is then put into vacuum pricker In brazier, 1050 DEG C ~ 1080 DEG C are heated under 0.1Pa ~ 0.12Pa vacuum, is incubated furnace cooling after 20min ~ 25min, Nickel metal powder is set to form the pure nickel toughness reinforcing intermediate layer that thickness is 30 μm ~ 100 μm on copper shell inner surface.
9. the preparation method of a kind of copper-based bearing shell with toughness reinforcing intermediate layer according to claim 3, it is characterised in that described Step（5）Middle subzero treatment process is：By step（4）Bearing shell be placed in -170 DEG C~-180 DEG C of liquid nitrogen processing 2h ~ 3h, take Room temperature is warming up to after going out.
CN201711008534.9A 2017-10-25 2017-10-25 A kind of copper-based bearing shell with toughness reinforcing intermediate layer and preparation method thereof Withdrawn CN107747592A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108747229A (en) * 2018-07-31 2018-11-06 苏州虎伏新材料科技有限公司 A kind of multiple layer metal material and preparation method thereof being used to prepare sliding bearing
CN110497640A (en) * 2019-07-30 2019-11-26 上海涟屹轴承科技有限公司 A kind of PTFE based composites bearing shell cold compression molding method
CN110788301A (en) * 2019-10-18 2020-02-14 郑州机械研究所有限公司 Method suitable for strengthening braze-coating modification on surface of copper-based bearing bush
CN111001924A (en) * 2019-12-24 2020-04-14 郑州机械研究所有限公司 Method and equipment for manufacturing babbitt metal bearing bush

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108747229A (en) * 2018-07-31 2018-11-06 苏州虎伏新材料科技有限公司 A kind of multiple layer metal material and preparation method thereof being used to prepare sliding bearing
CN110497640A (en) * 2019-07-30 2019-11-26 上海涟屹轴承科技有限公司 A kind of PTFE based composites bearing shell cold compression molding method
CN110788301A (en) * 2019-10-18 2020-02-14 郑州机械研究所有限公司 Method suitable for strengthening braze-coating modification on surface of copper-based bearing bush
CN110788301B (en) * 2019-10-18 2022-03-15 郑州机械研究所有限公司 Method suitable for strengthening braze-coating modification on surface of copper-based bearing bush
CN111001924A (en) * 2019-12-24 2020-04-14 郑州机械研究所有限公司 Method and equipment for manufacturing babbitt metal bearing bush

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