CN115213638A - Composite copper alloy part for cone crusher and manufacturing method thereof - Google Patents
Composite copper alloy part for cone crusher and manufacturing method thereof Download PDFInfo
- Publication number
- CN115213638A CN115213638A CN202210867692.4A CN202210867692A CN115213638A CN 115213638 A CN115213638 A CN 115213638A CN 202210867692 A CN202210867692 A CN 202210867692A CN 115213638 A CN115213638 A CN 115213638A
- Authority
- CN
- China
- Prior art keywords
- copper alloy
- cone crusher
- base material
- manufacturing
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2/00—Crushing or disintegrating by gyratory or cone crushers
- B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to the technical field of crushers, and particularly discloses a composite copper alloy part for a cone crusher and a manufacturing method thereof, wherein the composite copper alloy part at least comprises the following steps: processing a base material according to the shape of a target component, and preparing a copper alloy welding wire; overlaying a copper alloy welding wire on the sliding friction surface of the base material to obtain a component rough blank; machining the component rough blank to a finished product size to obtain the composite copper alloy component for the cone crusher; the thickness of the copper alloy overlaying layer after the component rough blank is processed to the finished product size is 0.3-6 mm, the composite copper alloy component takes steel as a base material, so that the whole component has higher rigidity and fatigue strength, the copper alloy is compounded on the base material through cold metal transition welding, the copper alloy overlaying layer with very high bonding strength is obtained by regulating and controlling the diameter of a welding wire and technological parameters, a stable and uniform welding line is formed, the quality between the base material and the overlaying layer is ensured, and the sliding friction performance of the component is ensured.
Description
Technical Field
The invention relates to the technical field of crushers, in particular to a composite copper alloy part for a cone crusher and a manufacturing method thereof.
Background
The crusher is a crushing machine capable of crushing stone materials with different sizes into small particles, and mainly comprises a jaw crusher, an impact crusher, a ring hammer crusher, a cone crusher and the like, wherein the cone crusher has the characteristics of reliable structure, high production efficiency, economical use and the like, and is widely applied to crushing various ores and large materials in industries such as mine smelting, building materials, highways, railways, water conservancy, chemical engineering and the like.
In the working process of the cone crusher, the motor drives the eccentric sleeve to rotate through the transmission device, the movable cone shaft is in rotary swing under the urging of the eccentric sleeve, the section of the movable cone close to the static cone becomes a crushing cavity, the materials are continuously impacted in the crushing cavity, and the crushing and bending effects of the ores are realized.
The key sliding parts such as the main shaft eccentric sleeve, the bowl-shaped tile, the frame bushing and the like in the cone crusher equipment are large in size and irregular in appearance, so that the cone crusher equipment is generally manufactured by adopting a mould and a copper alloy casting method at present, the production difficulty is high, and the raw material cost is high. In addition, these copper alloy cast parts are subjected to significant compressive stresses during operation of the crusher and are susceptible to plastic deformation, and fatigue failure due to cyclic stresses is also its primary failure mode. However, since the rigidity and fatigue strength of these copper alloy cast parts are limited by the material and casting process, it is difficult to further improve the rigidity and fatigue strength. Chinese patent CN203459106U discloses an eccentric sleeve for a crusher, which simplifies the manufacturing process by adjusting the structure of cast steel, and welds a copper alloy composite layer with a cast steel substrate to form metallurgical bonding, but the patent does not disclose a specific manufacturing method and related process parameters for manufacturing, and the manufacturing steps and process parameters have critical influence on the quality and performance of the composite part, so it is very necessary and meaningful to study the manufacturing method of the composite copper alloy part for a cone crusher.
Disclosure of Invention
In view of the above-mentioned technical problems, the present invention provides a method for manufacturing a composite copper alloy part for a cone crusher, which has the advantages of economy and rapidness, and greatly reduces the amount of copper alloy required for manufacturing the part, and reduces the production cost, and meanwhile, the present invention effectively improves the rigidity and fatigue resistance of the part while ensuring the good friction performance of the part, and ensures excellent bonding strength, further improves the stability of the operation of the crusher and prolongs the service life of the crusher.
In order to achieve the above object, an aspect of the present invention provides a method for manufacturing a composite copper alloy part for a cone crusher, including at least the steps of:
processing a base material according to the shape of a target component, and preparing a copper alloy welding wire;
overlaying a copper alloy welding wire on the sliding friction surface of the base material to obtain a component rough blank;
machining the component rough blank to a finished product size to obtain the composite copper alloy component for the cone crusher;
the thickness of the copper alloy surfacing layer after the component rough blank is processed to the size of a finished product is 0.3-6 mm.
Preferably, the matrix material comprises carbon steel or alloy steel.
Preferably, the base material further comprises a cleaning treatment after processing.
Preferably, the roughness Ra of the base material is less than or equal to 12.5.
Preferably, the copper alloy includes at least one of brass, lead bronze, tin bronze, aluminum bronze, silicon bronze, beryllium bronze.
Preferably, the diameter of the copper alloy welding wire is 0.8-2 mm.
Preferably, the surfacing welding adopts a cold metal transition welding process.
Preferably, the shielding gas for cold metal transition welding is argon-helium mixed gas, and the gas flow is 15-20L/min.
Preferably, the process parameters of the cold metal transition welding are as follows: the current type is direct current reverse connection, the welding current is 100-220A, the wire feeding speed is 5-10 m/min, and the pendulum width is 8-18mm.
The invention also provides a composite copper alloy part for the cone crusher, which is obtained by the manufacturing method.
Compared with the prior art, the invention has the beneficial effects that:
(1) The composite copper alloy part obtained by the invention takes steel with high strength and high elastic modulus as a base material, so that the whole part has higher rigidity and fatigue strength, thereby prolonging the service life of the part, and the copper alloy is compounded on the base material through a cold metal transition welding process, a copper alloy surfacing layer with very high bonding strength is obtained by regulating and controlling the diameter of a welding wire and process parameters, a stable and uniform welding line can be formed, and the shrinkage and deformation of the base material are reduced, thereby ensuring the quality between the base material and the surfacing layer, and ensuring that the part has excellent sliding friction performance;
(2) The manufacturing method of the invention greatly reduces the usage amount of the copper alloy, reduces the cost of the raw materials for manufacturing, has economic and rapid manufacturing process and improves the production efficiency.
Drawings
Fig. 1 is a schematic structural view of a main shaft eccentric sleeve of a cone crusher manufactured in example 1, in which fig. (a) is a top view of the main shaft eccentric sleeve, fig. (b) is a front view of the main shaft eccentric sleeve, and fig. (c) is an enlarged view of fig. (b);
FIG. 2 is a schematic structural view of a cone crusher bowl tile manufactured in example 2, wherein (a) is a top view of the bowl tile, (b) is a front view of the bowl tile, and (c) is an enlarged view of the bowl tile;
fig. 3 is a schematic structural view of a cone crusher frame bushing manufactured in example 3, in which fig. (a) is a top view of the frame bushing, fig. (b) is a front view of the frame bushing, and fig. (c) is an enlarged view of fig. (b).
Wherein, 1, a base material; 2. and (7) overlaying the welding layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the embodiments described herein are only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a manufacturing method of a composite copper alloy part for a cone crusher, which at least comprises the following steps:
processing a base material according to the shape of a target component, and preparing a copper alloy welding wire;
overlaying a copper alloy welding wire on the sliding friction surface of the base material to obtain a component rough blank;
machining the component rough blank to a finished product size to obtain the composite copper alloy component for the cone crusher;
the thickness of the copper alloy surfacing layer after the component rough blank is processed to the size of a finished product is 0.3-6 mm.
When the thickness is too thin, the surfacing layer is easy to wear in the using process, the matrix material is exposed, the antifriction effect is lost, and when the thickness is too thick, the supporting effect cannot be fully exerted, so that the bearing capacity and the fatigue strength of the part can be greatly reduced.
In some embodiments, the matrix material comprises carbon steel or alloy steel.
Preferably, the carbon steel or alloy steel can be obtained by adopting various preparation processes, including but not limited to rolling, extruding, forging or casting processes, and the grade selection of the carbon steel or alloy steel can be determined according to the strength of different parts as required.
In some embodiments, the base material further comprises a cleaning treatment after processing, and the oil stain, the moisture and the micro-particles on the surface of the base material are removed through the cleaning treatment.
Preferably, the cleaning treatment comprises scrubbing, soaking or ultrasonic treatment with an organic solvent.
Further preferably, the organic solvent includes, but is not limited to, acetone or ethanol.
In some embodiments, the substrate material has a roughness Ra ≦ 12.5, which may be controlled by a finish turning process and measured by a roughness meter.
The roughness of base material can cause the influence to the quality of build-up welding, and the roughness is too big can lead to the build-up welding of base material and copper alloy to combine badly, further makes the cone crusher part of preparation produce the problem that the welded layer drops easily in the use, this application through the roughness control with base material be no more than 12.5, be favorable to with the bonding strength promotion between the copper alloy welding wire.
In some embodiments, the copper alloy includes at least one of brass, lead bronze, tin bronze, aluminum bronze, silicon bronze, beryllium bronze.
In some embodiments, the copper alloy welding wire has a diameter of 0.8 to 2mm.
Preferably, the diameter of the copper alloy welding wire is 1.0-1.6 mm.
The inventor finds that the diameter of the welding wire influences the quality of the welding seam of the formed overlaying layer in research, the width and the penetration depth of the welding seam are small due to the excessively small diameter of the welding wire, the welding strength is further low, and the production efficiency is low due to the excessively small diameter of the welding wire; the excessive diameter of the welding wire can cause the defects of over-burning breakdown and collapse of the welding line, no full welding between welding layers and the like, meanwhile, the excessive diameter of the welding wire causes the increase of heat input of a welding area, further enlarges a heat affected zone, causes the coarseness of crystal grains between the overlaying layer and a base material, and causes the defect of low toughness of the area, which is extremely unfavorable for key parts used on a cone crusher. The method can ensure the combination between the surfacing layer and the base material and the welding quality of parts by regulating and controlling the diameter of the welding wire to be 1.0-1.6 mm and combining the cold metal transition welding process.
In some embodiments, the weld overlay uses a cold metal transfer welding process.
According to the method, the cold metal transition welding process is adopted for surfacing, not only can the arc be rapidly ignited, but also the arc is not splashed in the arc ignition process, the arc length is controlled more accurately, the electric arc is stable, and the welding can be realized for the part with smaller size.
In some embodiments, the shielding gas for cold metal transition welding is argon-helium mixed gas, and the gas flow rate is 15-20L/min.
Preferably, the shielding gas of the cold metal transition welding is Ar70% -He30%.
In some embodiments, the process parameters of the cold metal transfer welding are: the current type is direct current reverse connection, the welding current is 100-220A, the wire feeding speed is 5-10 m/min, and the pendulum width is 8-18mm.
Preferably, the process parameters of the cold metal transition welding are as follows: the current type is direct current reverse connection, the welding current is 120-210A, the wire feeding speed is 6-8 m/min, and the pendulum width is 10-16 mm.
In the process of surfacing a copper alloy welding wire on a base material, specific technological parameters of cold metal transition welding can have important influence on the quality and performance of manufactured parts, and after a great deal of effort, the inventor finds that on one hand, by selecting a protective gas of argon-helium, strictly controlling the proportion of the argon-helium to be Ar70% -He30% and the gas flow to be 15-20L/min, the whole welding process can have more proper arc pressure and arc stirring effect, the uniformity and the moderation of crystal grains of a surfacing layer are ensured, meanwhile, the defects of forming eddy currents or holes and the like can be avoided, and the quality of a welded composite layer is excellent; on the other hand, the current type is selected to be direct-current reverse connection, the welding current, the wire feeding speed and the swing width are regulated and controlled simultaneously, the phenomenon that the fusion depth and the fusion width are too large or too small is avoided, a stable and uniform welding line is further formed, the shrinkage and deformation of the base material are reduced, and therefore the strength between the base material and the surfacing layer is guaranteed.
In some embodiments, the temperature between layers of the weld deposit is controlled to be 240-260 ℃.
Preferably, the temperature between layers of the surfacing is controlled to be 250 ℃.
Another aspect of the present invention provides a composite copper alloy part for a cone crusher obtained by the above-described manufacturing method.
The invention does not specially limit the types of the manufactured composite copper alloy parts for the cone crusher, and the parts comprise key parts such as a main shaft eccentric sleeve, a bowl-shaped tile, a frame bushing and the like.
Example 1
The embodiment provides a method for manufacturing a composite copper alloy part for a cone crusher, wherein the concrete part is a main shaft eccentric sleeve in the cone crusher, the structure of the main shaft eccentric sleeve is shown in figure 1, and the method comprises the following steps:
s1, preparing a base material Q355 grade steel, and carrying out finish turning on the base material according to the shape of a spindle eccentric sleeve to enable the surface roughness of a sliding friction surface of the base material 1 to reach Ra6.3;
s2, cleaning the surface of the processed base material 1 by using acetone;
s3, preparing the lead bronze alloy CuPb15Sn8 into a copper alloy welding wire with the diameter of 1.2mm, and removing pollutants on the surface of the welding wire;
s4, overlaying the lead bronze welding wire on the sliding friction surface of the base material by adopting a cold metal transition welding process to form an overlaying layer 2 with the thickness of 5mm, so as to obtain a rough blank of the eccentric sleeve of the spindle;
and S5, machining the rough blank of the spindle eccentric sleeve obtained in the step S4 to a finished product size, wherein the final thickness of the surfacing layer 2 is 2.5mm, and thus obtaining the spindle eccentric sleeve component.
The process parameters of cold metal transfer welding are shown in table 1.
TABLE 1
| Protective gas | Ar70％-He30％ |
| Gas flow (L/min) | 15-20 |
| Kind of current | Direct current reverse connection |
| Welding current (A) | 160-175 |
| Wire feed speed (m/min) | 6-8 |
| Width pendulum (mm) | 14 |
| Interlayer temperature (. Degree.C.) | 250 |
And (3) testing results:
the bonding strength of the present example was measured according to ISO 4386-2 "destructive test method for bimetallic bonding strength of sliding bearing", and the bonding strength between the base material and the antifriction alloy layer was found to be not less than 132MPa.
Example 2
The embodiment provides a method for manufacturing a composite copper alloy part for a cone crusher, wherein the concrete part is a bowl-shaped tile in the cone crusher, the structure of the bowl-shaped tile is shown in figure 2, and the method comprises the following steps:
s1, preparing a 42CrMo steel base material, and finely turning the steel base material according to the shape of a bowl-shaped tile to enable the surface roughness of a sliding friction surface of the steel base material 1 to reach Ra3.2;
s2, cleaning the surface of the processed base material 1 by using acetone;
s3, preparing the brass alloy CuZn31Si1 into a copper alloy welding wire with the diameter of 1.0mm, and removing pollutants on the surface of the welding wire;
s4, overlaying the brass welding wires on the sliding friction surface of the base material 1 by adopting a cold metal transition welding process to form an overlaying layer 2 with the thickness of 4mm, so as to obtain a rough blank of the bowl-shaped tile;
and S5, machining the rough blank of the bowl-shaped tile obtained in the step S4 to a finished product size, wherein the final thickness of the surfacing layer 2 is 2mm, and thus obtaining the bowl-shaped tile component.
The process parameters of cold metal transfer welding are shown in table 1.
TABLE 1
| Protective gas | Ar70％-He30％ |
| Gas flow (L/min) | 15-20 |
| Kind of current | Direct current reverse connection |
| Welding current (A) | 120-135 |
| Wire feed speed (m/min) | 6-8 |
| Width pendulum (mm) | 10 |
| Interlayer temperature (. Degree.C.) | 250 |
And (3) testing results:
the bonding strength of the present example was measured according to ISO 4386-2 "destructive test method for bimetallic bonding strength of sliding bearing", and the bonding strength between the base material and the antifriction alloy layer was not less than 306MPa.
Example 3
The embodiment provides a manufacturing method of a composite copper alloy part for a cone crusher, and the specific part is a rack bushing in the cone crusher, the structure of the component is shown as fig. 3, and the method comprises the following steps:
s1, preparing a base material Q355 steel, and finely turning the base material according to the shape of a rack bushing to enable the surface roughness of a sliding friction surface of the base material 1 to reach Ra12.5;
s2, cleaning the surface of the processed base material 1 by using acetone;
s3, preparing the lead bronze alloy CuPb20Sn5 into a copper alloy welding wire with the diameter of 1.6mm, and removing pollutants on the surface of the welding wire;
s4, overlaying the lead bronze welding wire on the sliding friction surface of the base material 1 by adopting a cold metal transition welding process to form an overlaying layer 2 with the thickness of 6mm, so as to obtain a rough blank of the frame bushing;
and S5, machining the rough blank of the bowl-shaped tile obtained in the step S4 to a finished product size, wherein the final thickness of the surfacing layer 2 is 4mm, and thus obtaining the rack bushing component.
The process parameters of cold metal transfer welding are shown in table 1.
TABLE 1
And (3) testing results:
the bonding strength of the present example was measured according to ISO 4386-2 "destructive test method for bimetallic bonding strength of sliding bearing", and the bonding strength between the base material and the antifriction alloy layer was not less than 108MPa.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A manufacturing method of a composite copper alloy part for a cone crusher is characterized by at least comprising the following steps:
processing a base material according to the shape of a target component, and preparing a copper alloy welding wire;
overlaying a copper alloy welding wire on the sliding friction surface of the base material to obtain a component rough blank;
machining the component rough blank to a finished product size to obtain the composite copper alloy component for the cone crusher;
the thickness of the copper alloy surfacing layer after the component rough blank is processed to the size of a finished product is 0.3-6 mm.
2. The method of manufacturing a composite copper alloy part for a cone crusher according to claim 1, wherein the base material comprises carbon steel or alloy steel.
3. The method of manufacturing a composite copper alloy member for a cone crusher as claimed in claim 1, wherein said base material further comprises a cleaning treatment after machining.
4. The method for manufacturing a composite copper alloy member for a cone crusher as claimed in any one of claims 1 to 3, wherein a roughness Ra of said base material is 12.5 or less.
5. The method of manufacturing a composite copper alloy part for a cone crusher according to claim 1, wherein the copper alloy includes at least one of brass, lead bronze, tin bronze, aluminum bronze, silicon bronze, and beryllium bronze.
6. The method for manufacturing a composite copper alloy part for a cone crusher as claimed in claim 1, wherein the diameter of the copper alloy wire is 0.8 to 2mm.
7. The method for manufacturing the composite copper alloy part for the cone crusher according to claim 1, wherein the overlaying welding adopts a cold metal transition welding process.
8. The method for manufacturing a composite copper alloy member for a cone crusher as claimed in claim 1, wherein the shielding gas for cold metal transfer welding is a mixed gas of argon and helium, and a gas flow rate is 15 to 20L/min.
9. The method for manufacturing the composite copper alloy part for the cone crusher according to claim 8, wherein the process parameters of the cold metal transition welding are as follows: the current type is direct current reverse connection, the welding current is 100-220A, the wire feeding speed is 5-10 m/min, and the pendulum width is 8-18mm.
10. A composite copper alloy part for a cone crusher obtained by the manufacturing method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867692.4A CN115213638A (en) | 2022-07-22 | 2022-07-22 | Composite copper alloy part for cone crusher and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867692.4A CN115213638A (en) | 2022-07-22 | 2022-07-22 | Composite copper alloy part for cone crusher and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115213638A true CN115213638A (en) | 2022-10-21 |
Family
ID=83613672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867692.4A Pending CN115213638A (en) | 2022-07-22 | 2022-07-22 | Composite copper alloy part for cone crusher and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115213638A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203459106U (en) * | 2013-09-02 | 2014-03-05 | 烟台开发区蓝鲸金属修复有限公司 | Eccentric sleeve for crushers |
| EP2705925A2 (en) * | 2011-09-16 | 2014-03-12 | King Abdulaziz City for Science & Technology (KACST) | Method of enhancing wear resistance of the centrifugal pump parts |
| WO2017127858A1 (en) * | 2016-01-28 | 2017-08-03 | Miba Gleitlager Austria Gmbh | Method for producing a sliding bearing element |
| CN108856972A (en) * | 2018-06-14 | 2018-11-23 | 重庆文理学院 | The welding procedure of built-up welding tin bronze on a kind of stainless steel |
| CN110919135A (en) * | 2019-12-03 | 2020-03-27 | 哈尔滨电机厂有限责任公司 | Preparation method for Babbitt metal composite welding on surface of curved surface bearing bush |
| CN113334841A (en) * | 2021-06-16 | 2021-09-03 | 中机智能装备创新研究院(宁波)有限公司 | Skateboard and preparation method thereof |
| CN113770487A (en) * | 2021-09-18 | 2021-12-10 | 福尼斯智能装备(珠海)有限公司 | Surface overlaying process of aluminum bronze alloy welded by CMT |
-
2022
- 2022-07-22 CN CN202210867692.4A patent/CN115213638A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2705925A2 (en) * | 2011-09-16 | 2014-03-12 | King Abdulaziz City for Science & Technology (KACST) | Method of enhancing wear resistance of the centrifugal pump parts |
| CN203459106U (en) * | 2013-09-02 | 2014-03-05 | 烟台开发区蓝鲸金属修复有限公司 | Eccentric sleeve for crushers |
| WO2017127858A1 (en) * | 2016-01-28 | 2017-08-03 | Miba Gleitlager Austria Gmbh | Method for producing a sliding bearing element |
| CN108856972A (en) * | 2018-06-14 | 2018-11-23 | 重庆文理学院 | The welding procedure of built-up welding tin bronze on a kind of stainless steel |
| CN110919135A (en) * | 2019-12-03 | 2020-03-27 | 哈尔滨电机厂有限责任公司 | Preparation method for Babbitt metal composite welding on surface of curved surface bearing bush |
| CN113334841A (en) * | 2021-06-16 | 2021-09-03 | 中机智能装备创新研究院(宁波)有限公司 | Skateboard and preparation method thereof |
| CN113770487A (en) * | 2021-09-18 | 2021-12-10 | 福尼斯智能装备(珠海)有限公司 | Surface overlaying process of aluminum bronze alloy welded by CMT |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109468634B (en) | Process method for recovering precision of rolling mill step pad by laser cladding technology | |
| Cioffi et al. | Friction stir welding of thick plates of aluminum alloy matrix composite with a high volume fraction of ceramic reinforcement | |
| Chen et al. | Effect of grain size on the microstructure and mechanical properties of friction stir welded non-combustive magnesium alloys | |
| CN100482350C (en) | Composite-material abrasive roller of tungsten carbide grain reinforced metal base and its production | |
| Srivastava et al. | Investigation on the effects of silicon carbide and cooling medium during multi-pass FSP of Al-Mg/SiC surface composites | |
| Zoeram et al. | Welding parameters analysis and microstructural evolution of dissimilar joints in Al/Bronze processed by friction stir welding and their effect on engineering tensile behavior | |
| Prasanna et al. | Effect of tool pin profiles and heat treatment process in the friction stir welding of AA 6061 aluminium alloy | |
| CN1888458A (en) | Double-metal solid bearing cage and producing process thereof | |
| Puviyarasan et al. | Optimization of friction stir process parameters in fabricating AA6061/SiCp composites | |
| CN110614338B (en) | Forging method of GH4169 alloy steel round bar | |
| Dubey et al. | Wear behaviour of friction stir weld joint of cast Al (4–10%) Cu alloy welded at different operating parameters | |
| Fowziya et al. | Influences of nano-green lubricants in the friction-stir process of TiAlN coated alloys | |
| Seidi et al. | Lateral friction surfacing: experimental and metallurgical analysis of different aluminum alloy depositions | |
| Xie et al. | Efficient depositing aluminum alloy using thick strips through severe deformation-based friction rolling additive manufacturing: processing, microstructure, and mechanical properties | |
| Keshavarz et al. | Microstructure and mechanical properties of Al/graphite-zirconium oxide hybrid composite fabricated by friction stir processing | |
| JPH07290186A (en) | Tungsten carbide composite lining material and layer for centrifugal casting | |
| CN114055092A (en) | Method for manufacturing air-hole ultrahigh-pressure pipe fitting by high-nickel alloy structural steel | |
| CN113894258A (en) | Surface coating of foot roller of continuous casting crystallizer and preparation method thereof | |
| CN115213638A (en) | Composite copper alloy part for cone crusher and manufacturing method thereof | |
| Zhang et al. | Effect of tool traverse speed on joint line remnant and mechanical properties of friction stir welded 2195-T8 Al–Li alloy joints | |
| CN109530462B (en) | Pretreatment device and pretreatment method for die steel | |
| Seidi et al. | Characterization of lateral friction surfaced AA6063 coatings | |
| Liu et al. | Hybrid manufacturing process combining laser powder-bed fusion and forging for fabricating Ti–5Al–5V–5Mo–3Cr–1Zr alloy with exceptional and isotropic mechanical properties | |
| CA1208613A (en) | High resistance crushing bar, and its manufacture | |
| JP2006297427A (en) | Method for manufacturing forged sleeve roll for rolling wide flange shape |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |