CN114369821A - Laser cladding repair process for gray cast iron piston head ring groove - Google Patents
Laser cladding repair process for gray cast iron piston head ring groove Download PDFInfo
- Publication number
- CN114369821A CN114369821A CN202111438491.4A CN202111438491A CN114369821A CN 114369821 A CN114369821 A CN 114369821A CN 202111438491 A CN202111438491 A CN 202111438491A CN 114369821 A CN114369821 A CN 114369821A
- Authority
- CN
- China
- Prior art keywords
- piston head
- laser cladding
- ring groove
- cladding
- cast iron
- 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
- 238000004372 laser cladding Methods 0.000 title claims abstract description 74
- 230000008439 repair process Effects 0.000 title claims abstract description 27
- 229910001060 Gray iron Inorganic materials 0.000 title claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000005253 cladding Methods 0.000 claims description 37
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 4
- 238000007514 turning Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001141 Ductile iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a gray cast iron piston head ring groove laser cladding repair process; the method comprises the following steps: machining the inner vertical surface of the damaged piston head ring groove to be repaired; cleaning the inner vertical surface of the ring groove; thirdly, setting technological parameters through laser cladding equipment to carry out laser cladding on the iron-based alloy powder on the repaired part of the piston ring groove; fourthly, the power used for repairing the opposite face of the annular groove is reduced by 5 to 10 percent, and other parameters are consistent with the first vertical face parameter; sequentially completing laser cladding processes of other ring grooves of the piston head; and after laser cladding is finished, performing dye penetrant inspection after the piston head is naturally cooled, solving the problem that the laser cladding of the inner vertical surface of the ring groove of the grey cast iron piston head is easy to generate cracks and air holes under the condition of no preheating and no heat preservation, realizing laser cladding repair and reinforcement of the inner vertical surface of the ring groove of the grey cast iron piston head, replacing a new piston head, greatly prolonging the service life of the piston head, and realizing remanufacturing and recycling of an old piston head.
Description
Technical Field
The invention relates to the field of piston remanufacturing, in particular to a laser cladding repair process for a gray cast iron piston head ring groove, which is suitable for repair and manufacture of gray cast iron, ductile iron and other cast iron piston ring grooves.
Background
One of the main parts of the piston engine of the engine, the piston group is formed by the piston engine, the piston ring, the piston pin and other parts, and the combustion chamber is formed by the piston engine, the piston group, the cylinder cover and the like.
The most common damage to pistons is wear of the piston ring grooves, piston skirt portions, and piston pins and piston pin boss bores. The piston ring groove is the most worn part of the piston, especially the first piston ring groove is worn most seriously. The main reason is that the unit pressure of the piston ring to the ring groove is assessed by the pressure of the fuel gas, and the impact force of the piston ring to the ring groove is large due to the high-speed Wangfu motion of the piston; in addition, the high temperature of the combustion gases causes the operating temperature of the piston head to be high, which results in the piston ring grooves being susceptible to wear. The worn ring groove has a trapezoidal section, wide outside and narrow inside, and increased side clearance, which leads to air leakage and oil channeling of the cylinder, and causes the problems of reduced power performance of the engine, deteriorated lubrication, large amount of carbon deposition in a combustion chamber and the like. Therefore, the strengthening and repairing of the piston ring groove are necessary, most of the traditional repairing modes are plasma repairing, for example, a plasma arc cladding repairing method of a continuous casting roller provided by the file number CN 102912276A, but as the piston head is made of gray cast iron, and the groove of the ring groove is too narrow (6-12 mm), the plasma repairing needs preheating and heat preservation, and many piston heads cannot be repaired.
With the development of the surface modification technology, the laser cladding technology is gradually widely applied. Laser Cladding (Laser Cladding), also known as Laser Cladding or Laser Cladding, is a new surface modification technique. The method is characterized in that a cladding material is added on the surface of a base material, and the cladding material and a thin layer on the surface of the base material are fused together by utilizing a laser beam with high energy density, so that a cladding layer which is metallurgically bonded with the base layer is formed on the surface of the base layer. The laser cladding technology has high controllability and stable quality, and the feasibility and the advantages of repairing the piston head and the piston ring groove by utilizing the laser cladding technology are high.
Disclosure of Invention
Aiming at the repair requirements of the piston heads of gray cast iron and nodular cast iron, the invention provides a laser cladding repair process for the piston head ring groove of gray cast iron, which can realize the repair of the piston head ring groove and prolong the service life of the piston head.
A gray cast iron piston head ring groove laser cladding repair process specifically comprises the following steps:
the method comprises the following steps: machining the inner vertical surface of the damaged piston head ring groove to be repaired, and turning to remove the fatigue layer and the oxidation layer;
step two: cleaning the inner vertical surface of the ring groove, removing burrs and oil stains;
step three: setting technological parameters through laser cladding equipment to carry out laser cladding on the iron-based alloy powder on the repaired part of the piston ring groove, wherein the piston head continuously rotates at a variable speed in the cladding process, so that the scanning linear velocity of a cladding head is ensured to be at a constant speed; completing the repair of the single-side vertical surface of the ring groove;
step four: when the opposite face of the annular groove is repaired, the used power is reduced by 5-10%, and other parameters are consistent with the first vertical face parameter;
step five: sequentially completing laser cladding processes of other ring grooves of the piston head, wherein the power parameters of the laser cladding processes are respectively consistent with the parameters of the two vertical surfaces of the first ring groove;
step six: after laser cladding is finished, after the piston head is naturally cooled, performing dye check to detect whether air holes and cracks exist, and then performing machining to restore the original size.
The invention is further improved in that: in the first step, the width of the piston head ring groove is 7-10mm, the depth of the piston head ring groove is 8-12mm, and according to the damage condition, the ring groove is pinned to remove oxide skin and a fatigue layer, so that the defect of a laser cladding layer caused by the fatigue layer is avoided.
The invention is further improved in that: in the third step, the laser cladding adopts a 4kW semiconductor laser as a light source, a six-axis robot and a two-axis positioner as a laser cladding movement system, an air-carrying powder machine as a powder feeding mechanism, and three coaxial powder feeding cladding heads as laser heads, so that the laser cladding system is integrally formed to carry out laser cladding continuous scanning processing.
The invention is further improved in that: in the third step, the laser cladding process parameters are as follows: the laser focus spot size is: phi is 1.8mm, the powder feeding nozzle of the cladding head is a three-way coaxial powder feeding nozzle, the working distance is 35mm, the inclination angle is 30-60 degrees, the output power is 1600 plus 2000W, the piston head continuously rotates at variable speed by a positioner, the cladding linear speed is ensured to be constant and is 10-12mm/s, the cladding layer is lapped from inside to outside one way, the lapping amount is 1.0mm, the powder feeding amount is 30-40g/min, the adopted protective gas is argon, and the argon flow is 14-18L/min.
The invention is further improved in that: and (5) immediately performing a fourth step after the third step, namely cladding opposite to the related side surface, wherein the process parameter is 90-95% of the power used in the third step, and other parameters are the same as those in the third step.
The invention is further improved in that: in the third step, the components of the iron-based alloy powder are 2.29 percent of C, 29.10 percent of Cr, 0.84 percent of Mn, 3.16 percent of Si, 4.35 percent of NiC and the balance of Fe.
The invention is further improved in that: in the third step, the final hardness of the iron-based alloy powder is HRC52-62, and the thickness is 1.2 mm.
The invention has the beneficial effects that: the laser cladding repair process for the gray cast iron piston head ring groove can be applied to repair and reinforcement of the piston head ring groove made of gray cast iron, nodular cast iron and the like, can avoid preheating and heat preservation processes, simultaneously ensures that a cladding layer has no defects of air holes, cracks, residues and the like, ensures the consistency and stability of product quality, is reliable in production quality and high in hardness of a repair layer, is metallurgically combined with base metal, realizes repair of the piston head ring groove, greatly prolongs the service life of the piston head, replaces a new piston head, realizes remanufacturing and recycling of an old piston head, and has high social benefits.
Drawings
FIG. 1 is a pictorial view of the inside vertical face of a piston head ring groove of the present invention after machining; .
Fig. 2 and 3 show the inside-out angles and directions of the laser cladding powder feeding nozzle for piston ring grooves.
FIG. 4 is a representation of a piston head ring groove of the present invention after repair.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example 1:
taking laser cladding repair of the piston head of the marine oil production machine as an example, a specific implementation mode of a laser cladding repair process of the gray cast iron piston head ring groove is described, and the specific requirements are as follows: the method has no air holes and cracks, the hardness is more than 52HRC, the thickness of a cladding layer is more than 0.8mm, the width of a piston ring groove is 7mm, the depth is 10mm, and the method comprises the following specific steps:
the method comprises the following steps: machining the inner vertical surface of the damaged piston head ring groove to be repaired, turning to remove a fatigue layer and an oxidation layer, and turning off 0.3mm of each vertical surface at two sides as shown in figure 1;
step two: cleaning the inner vertical surface of the ring groove, removing burrs and oil stains;
step three: setting technological parameters through laser cladding equipment to carry out laser cladding on the iron-based alloy powder on the repaired part of the piston ring groove, wherein the piston head continuously rotates at a variable speed in the cladding process, so that the scanning linear velocity of a cladding head is ensured to be at a constant speed; completing the repair of the single-side vertical surface of the ring groove;
step four: after the cladding of the inner vertical surface of the first ring groove is finished, cladding the other surface of the first ring groove is carried out according to the method related to the third step, the power of the cladding is 1700W, and other parameters are consistent with those in the third step;
step five: according to the third step and the fourth step, the laser cladding process of other ring grooves of the piston head is completed in sequence, the power parameters of the laser cladding process are respectively consistent with the parameters of the two vertical surfaces of the first ring groove, and the laser cladding real image is shown in fig. 4;
step six: after laser cladding is finished, after the piston head is naturally cooled, performing dye check to detect whether air holes and cracks exist, and then performing machining to restore the original size.
In the third step, the laser cladding adopts a 4kW semiconductor laser as a light source, a six-axis robot and a two-axis positioner as a laser cladding movement system, an air-carrying powder machine as a powder feeding mechanism, and three coaxial powder feeding cladding heads as laser heads, and the laser cladding system is integrally formed to carry out laser cladding continuous scanning processing, wherein the laser cladding process parameters are as follows: the laser focus spot size is: phi is 1.8mm, the powder feeding nozzle of the cladding head is a three-way coaxial powder feeding nozzle, the working distance is 35mm, the inclination angle is 30 degrees, the output power is 1800W, the piston head continuously rotates at variable speed by a positioner to ensure the cladding linear velocity to be at a constant speed of 10mm/s, the cladding layer is lapped from inside to outside one way (as shown in figures 2 and 3), the lapping amount is 1.0mm, the powder feeding amount is 38g/min, the adopted protective gas is argon, and the argon flow is 15L/min.
The powder related to the laser cladding is ferrochrome powder, and the powder comprises 2.29% of C, 29.10% of Cr, 0.84% of Mn, 3.16% of Si, 4.35% of NiC and the balance of Fe. The final hardness is HRC52-55, the thickness is 1.0mm, no crack and no pore and other defects exist, and preheating and heat preservation are not needed in the whole process.
Example 2:
the embodiment 2 is different from the embodiment 1 only in that parameters in the third step are different in the repairing process, specifically:
the laser cladding adopts a 4kW semiconductor laser as a light source, a six-axis robot and a two-axis positioner as a laser cladding movement system, an air-carrying powder machine as a powder feeding mechanism, and three coaxial powder feeding cladding heads as laser heads, and the laser cladding system is integrally formed to carry out laser cladding continuous scanning processing, wherein the laser cladding process parameters are as follows: the laser focus spot size is: phi is 1.8mm, the powder feeding nozzle of the cladding head is a three-way coaxial powder feeding nozzle, the working distance is 35mm, the inclination angle is 45 degrees, the output power is 1600W, the piston head continuously rotates at variable speed by a positioner, the cladding linear speed is ensured to be uniform and is 11mm/s, the cladding layer is lapped from inside to outside one way (as shown in figures 2 and 3), the lapping quantity is 1.0mm, the powder feeding quantity is 30g/min, the adopted protective gas is argon, and the argon flow is 14L/min.
Example 3:
the embodiment 3 is different from the embodiments 1 and 2 only in that parameters in the third step are different in the repairing process, specifically:
the laser cladding adopts a 4kW semiconductor laser as a light source, a six-axis robot and a two-axis positioner as a laser cladding movement system, an air-carrying powder machine as a powder feeding mechanism, and three coaxial powder feeding cladding heads as laser heads, and the laser cladding system is integrally formed to carry out laser cladding continuous scanning processing, wherein the laser cladding process parameters are as follows: the laser focus spot size is: phi is 1.8mm, the powder feeding nozzle of the cladding head is a three-way coaxial powder feeding nozzle, the working distance is 35mm, the inclination angle is 60 degrees, the output power is 2000W, the piston head continuously rotates at variable speed by a positioner, the cladding linear speed is ensured to be uniform and is 12mm/s, the cladding layer is lapped from inside to outside one way (as shown in figures 2 and 3), the lapping quantity is 1.0mm, the powder feeding quantity is 40g/min, the adopted protective gas is argon, and the argon flow is 18L/min.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A gray cast iron piston head ring groove laser cladding repair process is characterized in that: the method specifically comprises the following steps:
the method comprises the following steps: machining the inner vertical surface of the damaged piston head ring groove to be repaired, and turning to remove the fatigue layer and the oxidation layer;
step two: cleaning the inner vertical surface of the ring groove, removing burrs and oil stains;
step three: setting technological parameters through laser cladding equipment to carry out laser cladding on the iron-based alloy powder on the repaired part of the piston ring groove, wherein the piston head continuously rotates at a variable speed in the cladding process, so that the scanning linear velocity of a cladding head is ensured to be at a constant speed; completing the repair of the single-side vertical surface of the ring groove;
step four: when the opposite face of the annular groove is repaired, the used power is reduced by 5-10%, and other parameters are consistent with the first vertical face parameter;
step five: sequentially completing laser cladding processes of other ring grooves of the piston head, wherein the power parameters of the laser cladding processes are respectively consistent with the parameters of the two vertical surfaces of the first ring groove;
step six: after laser cladding is finished, after the piston head is naturally cooled, performing dye check to detect whether air holes and cracks exist, and then performing machining to restore the original size.
2. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 1, wherein: in the first step, the width of the piston head ring groove is 7-10mm, the depth of the piston head ring groove is 8-12mm, and according to the damage condition, the ring groove is pinned to remove oxide skin and a fatigue layer, so that the defect of a laser cladding layer caused by the fatigue layer is avoided.
3. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 1, wherein: in the third step, the laser cladding adopts a 4kW semiconductor laser as a light source, a six-axis robot and a two-axis positioner as a laser cladding movement system, an air-carrying powder machine as a powder feeding mechanism, and three coaxial powder feeding cladding heads as laser heads, so that the laser cladding system is integrally formed to carry out laser cladding continuous scanning processing.
4. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 3, wherein: in the third step, the laser cladding process parameters are as follows: the laser focus spot size is: phi is 1.8mm, the powder feeding nozzle of the cladding head is a three-way coaxial powder feeding nozzle, the working distance is 35mm, the inclination angle is 30-60 degrees, the output power is 1600 plus 2000W, the piston head continuously rotates at variable speed by a positioner, the cladding linear speed is ensured to be constant and is 10-12mm/s, the cladding layer is lapped from inside to outside one way, the lapping amount is 1.0mm, the powder feeding amount is 30-40g/min, the adopted protective gas is argon, and the argon flow is 14-18L/min.
5. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 4, wherein: and (5) immediately performing a fourth step after the third step, namely cladding opposite to the related side surface, wherein the process parameter is 90-95% of the power used in the third step, and other parameters are the same as those in the third step.
6. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 1, wherein: in the third step, the components of the iron-based alloy powder are 2.29 percent of C, 29.10 percent of Cr, 0.84 percent of Mn, 3.16 percent of Si, 4.35 percent of NiC and the balance of Fe.
7. The laser cladding repair process for the gray cast iron piston head ring groove as claimed in claim 1, wherein: in the third step, the final hardness of the iron-based alloy powder is HRC52-62, and the thickness is 1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438491.4A CN114369821A (en) | 2021-11-30 | 2021-11-30 | Laser cladding repair process for gray cast iron piston head ring groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111438491.4A CN114369821A (en) | 2021-11-30 | 2021-11-30 | Laser cladding repair process for gray cast iron piston head ring groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114369821A true CN114369821A (en) | 2022-04-19 |
Family
ID=81139774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111438491.4A Pending CN114369821A (en) | 2021-11-30 | 2021-11-30 | Laser cladding repair process for gray cast iron piston head ring groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114369821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110076A (en) * | 2022-06-07 | 2022-09-27 | 湘潭大学 | Method for ultrahigh-speed laser cladding of nodular cast iron shaft parts |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050132569A1 (en) * | 2003-12-22 | 2005-06-23 | Clark Donald G. | Method of repairing a part using laser cladding |
| CN102619477A (en) * | 2011-01-28 | 2012-08-01 | 中国石油大学(华东) | Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint |
| CN104141131A (en) * | 2014-08-01 | 2014-11-12 | 常州南车柴油机零部件有限公司 | Process for repairing piston ring groove |
| CN106480447A (en) * | 2015-09-02 | 2017-03-08 | 沈阳大陆激光工程技术有限公司 | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove |
| CN109807550A (en) * | 2017-11-22 | 2019-05-28 | 四川跃镁镁业科技有限公司 | A method of repairing engine piston ring |
-
2021
- 2021-11-30 CN CN202111438491.4A patent/CN114369821A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050132569A1 (en) * | 2003-12-22 | 2005-06-23 | Clark Donald G. | Method of repairing a part using laser cladding |
| CN102619477A (en) * | 2011-01-28 | 2012-08-01 | 中国石油大学(华东) | Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint |
| CN104141131A (en) * | 2014-08-01 | 2014-11-12 | 常州南车柴油机零部件有限公司 | Process for repairing piston ring groove |
| CN106480447A (en) * | 2015-09-02 | 2017-03-08 | 沈阳大陆激光工程技术有限公司 | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove |
| CN109807550A (en) * | 2017-11-22 | 2019-05-28 | 四川跃镁镁业科技有限公司 | A method of repairing engine piston ring |
Non-Patent Citations (1)
| Title |
|---|
| 高荣发, 机械工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110076A (en) * | 2022-06-07 | 2022-09-27 | 湘潭大学 | Method for ultrahigh-speed laser cladding of nodular cast iron shaft parts |
| CN115110076B (en) * | 2022-06-07 | 2024-02-06 | 湘潭大学 | Method for cladding ductile iron shaft parts by ultra-high-speed laser |
| CN115772668A (en) * | 2022-12-09 | 2023-03-10 | 江苏智远激光装备科技有限公司 | Wind power sliding shaft laser cladding process |
| CN115772668B (en) * | 2022-12-09 | 2024-05-14 | 江苏智远激光装备科技有限公司 | Laser cladding process for wind power sliding shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114369821A (en) | Laser cladding repair process for gray cast iron piston head ring groove | |
| CN108559996B (en) | A kind of hydraulic support movable post outer surface laser melting coating restorative procedure | |
| US20050132569A1 (en) | Method of repairing a part using laser cladding | |
| US7009137B2 (en) | Laser powder fusion repair of Z-notches with nickel based superalloy powder | |
| CN110666168A (en) | Method for repairing turbine guider through laser material increase | |
| CN110257826A (en) | Grain roll bearing position laser cladding method and laser melting coating alloy powder | |
| JP2008261329A (en) | Thermal spraying method for coating piston ring groove, use of thermal spraying wire, and piston including thermal spraying layer | |
| CN111826650B (en) | Laser cladding composite powder and cladding method | |
| CN111304649B (en) | Preparation method of QT800 nodular cast iron bearing bush wear-resistant layer | |
| CN109207991B (en) | Shaft sleeve repairing process | |
| JP2010203258A (en) | Repairing method of moving blade | |
| CN105689909A (en) | Process for Lobe and Journal Preparation and Weld Repair | |
| CN108326509A (en) | A kind of quick reproducing method of conticaster roller | |
| Schubert et al. | Laser beam cladding: a flexible tool for local surface treatment and repair | |
| US20040177503A1 (en) | Method for the production of a forged piston for an internal combustion engine | |
| CN110328492B (en) | A-TIG welding repair compound method for long cracks of aero-engine turbine rear casing support plate | |
| JP2021041442A (en) | Resistance welding apparatus and resistance welding method | |
| GB2558274A (en) | Method of remanufacturing a cylinder head | |
| CN106480447A (en) | A kind of method that laser manufactures low-speed heave-load marine diesel engine piston annular groove | |
| US20040177505A1 (en) | Method for the production of a forged piston for an internal combustion engine | |
| CN115044900A (en) | Remanufacturing process for diesel engine camshaft of mining heavy-duty vehicle | |
| CN107937860A (en) | A kind of preparation method of argon arc remelting Fe base wearing layers | |
| RU2676937C1 (en) | Gas turbine engine part with the thin-walled element restoration method | |
| CN107130238B (en) | A kind of method that laser melting coating repairs precise forging machine tup | |
| CN111945155A (en) | Method for double-cylinder synchronous powder feeding, melting and depositing composite cladding layer based on 30CrMnSiA steel |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220419 |