CN110000513A - A kind of manufacture of medium-speed pulverizer separator guiding device wear surface and reproducing method - Google Patents
A kind of manufacture of medium-speed pulverizer separator guiding device wear surface and reproducing method Download PDFInfo
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- CN110000513A CN110000513A CN201910294032.XA CN201910294032A CN110000513A CN 110000513 A CN110000513 A CN 110000513A CN 201910294032 A CN201910294032 A CN 201910294032A CN 110000513 A CN110000513 A CN 110000513A
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- 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
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- 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
- B23P6/00—Restoring or reconditioning objects
Abstract
The invention discloses a kind of manufacturing methods of medium-speed pulverizer separator guiding device wear surface, its key points of the technical solution are that: it is short for the time between overhauls(TBO), there is no the occasion of the worn out phenomenon of separator guiding device using following methods: the abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein wearing the angle between the welding bead direction on end face and the wear direction of its position is α, the value of α is between ± 15 °, welding bead distance values are between 2-15mm, welding bead fusion penetration is less than 1mm, bead height difference is less than 1mm, built-up welding number of plies layer 2-4 manufactures wear surface, built-up welding overall thickness 4-16mm, by using above scheme when the abrasion end face to separator guiding device manufactures, it is capable of increasing the wearability of separator guiding device abrasion end face, improve its service life；And manufacturing method simple possible, the wear surface produced have high abrasion-resistance.
Description
Technical field
The present invention relates to coal pulverizer fields, more specifically, it is related to a kind of medium-speed pulverizer separator guiding device mill
The manufacture in damage face and reproducing method.
Background technique
Medium-speed pulverizer is largely used in coal-burning power plant, function is that raw coal is milled to powder, and reaching can be in boiler
The granularity being inside effectively burned.Effect of the separator guiding device inside coal pulverizer is to enter hot-air along specific direction to divide
From device.Under special flow passage design, it is coal-grinding that air-flow, which makees the first order separation that coal dust is completed in circumnutation around coal pulverizer central axes,
One of important component of machine.Separator guiding device wear surface can generate abrasion in the case where the pulverized coal particle that hot-air drives washes away,
Once wear surface is worn out, gyration airflow kinematic parameter can be made to change to seriously affect level-one separating effect.It can be seen that
Wear surface be using the time separator guiding device important parameter.
Conventional separators guiding device is made of frame board and muti-piece high chrome cast iron lining plate, will be high using the method for plug welding
Chrome cast iron liner plate plug welding (reference book attached drawing 1) on frame board, this structure has the following deficiencies: between high chrome cast iron lining plate
There are gaps, though in gap insert PTV binder, coal pulverizer high temperature, vibration operating condition in also by entrainment coal dust gas
Stream washes away, and easily fall off failure；Lining board clearance is gradually expanded by airflow scouring, and directly washing away support plate, (reference book is attached
Fig. 2), weldering corking is coated with resin-bonded silicon rubber, covers and fills in welding position in weldering, is equally influenced by high temperature, vibration, airflow scouring
Under fall off, in addition weld after corking falls off, air-flow carries coal dust secretly and forms whirlpool, accelerated wear test in weldering plug position；Disadvantages described above
Easily lead to separator guiding device leak out, powder leakage, influence coal pulverizer internal gas flow movement, cause pulverizer capacity reduce, energy consumption
Increase, so that overall performance declines.
Wear no resistance for conventional separators guiding device wear surface use, using the time it is short the problems such as, and occur one
Plant separator guiding device (the reference book attached drawing cancelled rich chromium cast iron hanging plate and manufacture frame board with oscillating build-up welding wearing plate
3) the advantages of, wherein weave bead width L is typically in the range of between 20-60mm, this structure is to simplify separator guiding dress
The manufacturing process set, while the service life of separator guiding device is also extended to a certain extent.But it is this by routine
The separator guiding device of oscillating build-up welding wearing plate manufacture is also defective, mainly shows following two points: first is that build-up wear-resistant plate is raw
Production. art limitation, the overlay cladding of build-up wear-resistant plate is difficult more than 10mm, and after overlay cladding is locally worn out, ordinary carbon steel matrix is very
It fastly will be worn out；Second is that molten bath is big in the fabrication process for the sold oscillating build-up welding wearing plate in market, high-temperature residence time is long, is unfavorable for
The precipitation and martensite transfor mation of carbide, surfacing hardness cannot be guaranteed, and more fatal is subsequent pendulum in this case
Dynamic welding bead can anneal to the weave bead of front, soften heat affected area (HAZ), and hardness sharp fall causes to wear
Conical surface B and abrasion end face C are worn out too early.
The separator of either traditional separator guiding device or oscillating build-up welding wearing plate manufacture frame board is oriented to dress
It sets, separator occurs abrasion and is all difficult to avoid that, and the existing method for repairing and mending to its wear surface is there are incomplete place,
Therefore it needs to make improvements.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of medium-speed pulverizer separator guiding dress
Manufacture and the reproducing method of wear surface are set, to solve the problems, such as to mention in background technique.
To achieve the above object, the present invention provides the following technical scheme that
A kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface, it is short for the time between overhauls(TBO), do not separate
The occasion of the worn out phenomenon of device guiding device uses following methods:
Abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein the weldering on abrasion end face
Angle between road direction and the wear direction of its position is α, and the value of α is between ± 15 °, and welding bead distance values are between 2-
Between 15mm, welding bead fusion penetration is less than 1mm, and bead height difference is less than 1mm, and built-up welding number of plies layer 2-4 manufactures wear surface, built-up welding overall thickness
4-16mm。
Further, long for the repair time, the occasion of worn out phenomenon occurs for separator guiding device wear surface, use with
The manufacture of lower section method:
S11, the region for serious wear, it is preforming to eroded area progress using molding, one is formed in eroded area
The size of a depressed area, depressed area is determined according to the abrasion size cases of abrasion end face；
S12, the size according to depressed area, establish three-dimensional digital model, are layered to obtain every layer of number with Slice Software
Learn model, lift height 1-6mm；
S13, depressed area is filled up using electric arc 3D printing technique according to every layer of mathematical model；
S14, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 4-16mm.
Further, wearing the angle between the welding bead direction on end face and the wear direction of its position is α, α's
Value is between ± 10 °, and for welding bead distance values between 5-10mm, welding bead fusion penetration is less than 0.6mm, and bead height difference is less than
0.6mm, built-up welding number of plies layer 2-4 manufacture wear surface, built-up welding overall thickness 6-12mm.
Further, wearing the angle between the welding bead direction on end face and the wear direction of its position is α, α's
Value is between ± 5 °, and for welding bead distance values between 6-8mm, welding bead fusion penetration is less than 0.4mm, and bead height difference is less than 0.4mm,
Built-up welding number of plies layer 2-4 manufactures wear surface, built-up welding overall thickness 8-10mm.
Further, wearing the angle between the welding bead direction on end face and the wear direction of its position is α, α's
Value is 4 °, and welding bead distance values are 7mm, and welding bead fusion penetration is 0.3mm, and bead height difference is 0.3mm, the 3 layers of manufacture abrasion of the built-up welding number of plies
Face, built-up welding overall thickness 9mm.
Further, in the S11 to eroded area carry out it is preforming when, using molding to eroded area carry out in advance at
Type, the material that when molding is chosen are thermosetting resin, and thermosetting resin is molded and eroded area in eroded area
Identical shape.
Further, according to the size of depressed area in the S12,3-dimensional digital mould is established using EasyPr i nt 3D
Type is layered to obtain every layer of mathematical model, lift height 2mm with three-dimensional digital model of the Slice Software CURA to foundation.
The present invention also provides a kind of reproducing methods of medium-speed pulverizer separator guiding device wear surface, when separation is led
When abrasion end face into device occurs worn out, adopts and is manufactured by the following method:
S21, will wear end face it is worn out near region cut away, and abrasion end face the back side weld pasting board, use
Pasting board is common carbon steel plate or cast steel plate, while the prefabricated sunk area on pasting board, the size of pasting board size and sunk area
It is determined according to the abrasion size cases of abrasion end face；
S22, three-dimensional digital model is established according to the size of sunk area, is layered to obtain every layer of number with Slice Software
Word model, lift height 1-6mm；
S23, use electric arc 3D printing technique to depressed section successively by depressed area and cutting according to every layer of mathematical model
Area is filled up；
S24, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 4-16mm.
Further, it when the abrasion end face in separation guiding device occurs worn out, adopts and is manufactured by the following method:
S31, leak stopping is carried out by the way of pasting board to the abrasion worn out position in end face, while the prefabricated depressed area on pasting board；
S32, position of the residual thickness less than 8mm in abrasion end face is first sliced off the region, then overleaf pasting board, together
When on pasting board prefabricated depressed area.
S33, depressed area is measured using manual measurement or reverse camera means, obtains abrasion end wear region
Three-dimensional digital model.
S34, eroded area is layered with Slice Software, lift height 1-6mm simultaneously obtains every layer of mathematical model.
S35, successively depressed area and cutting area are filled up using electric arc 3D printing technique according to every layer of mathematical model；
S36, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 4-16mm.
Further, the pasting board in the S21 is the rich chromium cast iron plate or build-up wear-resistant plate of no prefabricated recess.
In conclusion the present invention mainly has the advantages that
One, the single track welding bead bead-welding technology used in build-up wear-resistant layer separator guiding device structure have crackle it is tiny,
Built-up welding deforms advantage small, more than the built-up welding number of plies.
Two, the welding bead of windward side is consistent with impeller unit air outlet angle with a vertical certain angle, further decreases
Resistance of the separator guiding device to impeller unit outlet air.
Three, the manufacturing method simple possible used, by using above scheme in the wear tip to separator guiding device
When face is manufactured or remanufactured, it is capable of increasing the wearability of separator guiding device abrasion end face, improves its service life.
Detailed description of the invention
Fig. 1 is plate-hanging type separator guiding device schematic diagram；
Fig. 2 is the cross-sectional view of plate-hanging type separator guiding device；
Fig. 3 is the wear-resisting plate separator guiding device schematic diagram of oscillating build-up welding；
Fig. 4 is the Local map of the wear-resisting plate separator guiding device of oscillating build-up welding；
Fig. 5 is single-run welding schematic diagram；
Fig. 6 is that weld size requires figure；
Fig. 7 is the schematic diagram for showing prefabricated sunk area.
Fig. 8 is the schematic diagram for showing pasting board.
Specific embodiment
Below in conjunction with attached drawing 1-8, invention is further described in detail.
Embodiment 1
A kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface, conventional separators guiding device is in coal-grinding
Machine high temperature, vibration operating condition in also by entrainment coal dust airflow scouring, easily fall off failure, and lining board clearance is by airflow scouring
It is gradually expanded, directly washes away support plate, after in addition weldering corking falls off, air-flow carries coal dust secretly and forms whirlpool in weldering plug position, can add
Speed abrasion；It is short for the time between overhauls(TBO), following methods are used without the occasion of the worn out phenomenon of separator guiding device:
Abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein the weldering on abrasion end face
Angle between road direction and the wear direction of its position is α, and the value of α is 15 °, and welding bead distance values are between 15mm, weldering
Road fusion penetration is 0.9mm, and bead height difference is 0.9mm, and the built-up welding number of plies is 4 layers of manufacture wear surface, and built-up welding overall thickness is 16mm.
Embodiment 2
Difference from example 1 is that: it is short for the time between overhauls(TBO), without the field of the worn out phenomenon of separator guiding device
It closes and uses following methods:
Abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein the weldering on abrasion end face
Angle between road direction and the wear direction of its position is α, and the value of α chooses 12 °, and welding bead distance values select 12mm, weldering
Road fusion penetration selects 0.7mm, and bead height selects 0.7mm, 5 layers of manufacture wear surface of the built-up welding number of plies, built-up welding overall thickness 14mm.
Embodiment 3
Difference from example 1 is that: it is short for the time between overhauls(TBO), without the field of the worn out phenomenon of separator guiding device
It closes and uses following methods:
Abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein the weldering on abrasion end face
Angle between road direction and the wear direction of its position is α, and the value of α chooses 6 °, and welding bead distance values select 3mm, welding bead
Fusion penetration selects 0.3mm, and bead height selects 0.3mm, 2 layers of manufacture wear surface of the built-up welding number of plies, built-up welding overall thickness 4mm.
Embodiment 4
Difference from example 1 is that:
Long for the repair time, the occasion of worn out phenomenon occurs for separator guiding device wear surface, using following methods system
It makes:
S11, the region for serious wear, it is preforming to eroded area progress using molding, one is formed in eroded area
The size of a depressed area, depressed area is determined according to the abrasion size cases of abrasion end face；
S12, the size according to depressed area, establish three-dimensional digital model, are layered to obtain every layer of number with Slice Software
Learn model, lift height 6mm；
S13, depressed area is filled up using electric arc 3D printing technique according to every layer of mathematical model；
S14, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 16mm.
Embodiment 5
With embodiment 4 the difference is that:
Long for the repair time, the occasion of worn out phenomenon occurs for separator guiding device wear surface, using following methods system
It makes:
S11, the region for serious wear, it is preforming to eroded area progress using molding, one is formed in eroded area
The size of a depressed area, depressed area is determined according to the abrasion size cases of abrasion end face；
S12, the size according to depressed area, establish three-dimensional digital model, are layered to obtain every layer of number with Slice Software
Learn model, lift height 1mm；
S13, depressed area is filled up using electric arc 3D printing technique according to every layer of mathematical model；
S14, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 4mm.
Embodiment 6
With embodiment 4 the difference is that: additionally provide a kind of medium-speed pulverizer separator guiding device wear surface
Reproducing method, it is characterised in that: when the abrasion end face in separation guiding device occurs worn out, adopt and be manufactured by the following method:
S21, will wear end face it is worn out near region cut away, and abrasion end face the back side weld pasting board, use
Pasting board is common carbon steel plate or cast steel plate, while the prefabricated sunk area on pasting board, the size of pasting board size and sunk area
It is determined according to the abrasion size cases of abrasion end face；
S22, three-dimensional digital model is established according to the size of sunk area, is layered to obtain every layer of number with Slice Software
Word model, lift height 6mm；
S23, use electric arc 3D printing technique to depressed section successively by depressed area and cutting according to every layer of mathematical model
Area is filled up；
S24, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 16mm.
Embodiment 7
With embodiment 6 the difference is that: when separating abrasion end face in guiding device and occurring worn out, use is following
Method manufacture:
S21, will wear end face it is worn out near region cut away, and abrasion end face the back side weld pasting board, use
Pasting board is common carbon steel plate or cast steel plate, while the prefabricated sunk area on pasting board, the size of pasting board size and sunk area
It is determined according to the abrasion size cases of abrasion end face；
S22, three-dimensional digital model is established according to the size of sunk area, is layered to obtain every layer of number with Slice Software
Word model, lift height 1mm；
S23, use electric arc 3D printing technique to depressed section successively by depressed area and cutting according to every layer of mathematical model
Area is filled up；
S24, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding
With a thickness of 4mm.
Embodiment 8
With embodiment 6 the difference is that: when separating abrasion end face in guiding device and occurring worn out, use is following
Method manufacture:
S31, leak stopping is carried out by the way of pasting board to the abrasion worn out position in end face, while the prefabricated depressed area on pasting board；
S32, position of the residual thickness less than 8mm in abrasion end face is first sliced off the region, then overleaf pasting board, together
When on pasting board prefabricated depressed area.
S33, depressed area is measured using manual measurement or reverse camera means, obtains abrasion end wear region
Three-dimensional digital model.
S34, eroded area is layered with Slice Software, lift height 4mm simultaneously obtains every layer of mathematical model.
S35, successively depressed area and cutting area are filled up using electric arc 3D printing technique according to every layer of mathematical model；
S36, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is 3 layers, and butt welding is thick
Degree is 8mm.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface, it is characterised in that: it is short for the time between overhauls(TBO),
There is no the occasion of the worn out phenomenon of separator guiding device using following methods:
Abrasion end face in separation guiding device is welded using single track straight line or single track curve, wherein the welding bead side on abrasion end face
Angle between the wear direction of the position Xiang Yuqi is α, and the value of α is between ± 15 °, and welding bead distance values are between 2-15mm
Between, welding bead fusion penetration is less than 1mm, and bead height difference is less than 1mm, and built-up welding number of plies layer 2-4 manufactures wear surface, built-up welding overall thickness 4-
16mm。
2. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 1, feature
Be: long for the repair time, the occasion of worn out phenomenon occurs for separator guiding device wear surface, adopts and is manufactured by the following method:
S11, the region for serious wear, it is preforming to eroded area progress using molding, it is recessed in eroded area formation one
Area is fallen into, the size of depressed area is determined according to the abrasion size cases of abrasion end face；
S12, the size according to depressed area, establish three-dimensional digital model, are layered to obtain every layer of mathematical modulo with Slice Software
Type, lift height 1-6mm；
S13, depressed area is filled up using electric arc 3D printing technique according to every layer of mathematical model；
S14, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding thickness
For 4-16mm.
3. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 1, feature
Be: the welding bead direction on abrasion end face and the angle between the wear direction of its position are α, the value of α between ± 10 ° it
Between, for welding bead distance values between 5-10mm, welding bead fusion penetration is less than 0.6mm, and bead height difference is less than 0.6mm, built-up welding number of plies 2-4
Layer manufacture wear surface, built-up welding overall thickness 6-12mm.
4. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 3, feature
Be: the welding bead direction on abrasion end face and the angle between the wear direction of its position are α, the value of α between ± 5 ° it
Between, for welding bead distance values between 6-8mm, welding bead fusion penetration is less than 0.4mm, and bead height difference is less than 0.4mm, built-up welding number of plies 2-4
Layer manufacture wear surface, built-up welding overall thickness 8-10mm.
5. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 4, feature
Be: wearing the angle between the wear direction in the welding bead direction and its position on end face is α, and the value of α is 4 °, between welding bead
It is 7mm away from value, welding bead fusion penetration is 0.3mm, and bead height difference is 0.3mm, 3 layers of manufacture wear surface of the built-up welding number of plies, built-up welding overall thickness
9mm。
6. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 2, feature
It is: when carrying out preforming to eroded area in the S11, eroded area is carried out using molding preforming, when molding is chosen
Material be thermosetting resin, thermosetting resin is molded shape identical with eroded area in eroded area.
7. a kind of manufacturing method of medium-speed pulverizer separator guiding device wear surface according to claim 2, feature
It is: according to the size of depressed area in the S12, establishes three-dimensional digital model using EasyPrint3D, with Slice Software CURA
The three-dimensional digital model of foundation is layered to obtain every layer of mathematical model, lift height 2mm.
8. a kind of reproducing method of medium-speed pulverizer separator guiding device wear surface according to claim 1, special
Sign is: when the abrasion end face in separation guiding device occurs worn out, adopts and is manufactured by the following method:
S21, will wear end face it is worn out near region cut away, and abrasion end face the back side weld pasting board, the pasting board of use
For common carbon steel plate or cast steel plate, while the prefabricated sunk area on pasting board, the size of pasting board size and sunk area according to
The abrasion size cases for wearing end face determine；
S22, three-dimensional digital model is established according to the size of sunk area, is layered to obtain every layer of digital mould with Slice Software
Type, lift height 1-6mm；
S23, depressed section is successively filled out depressed area and cutting area using electric arc 3D printing technique according to every layer of mathematical model
It is full；
S24, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding thickness
For 4-16mm.
9. a kind of reproducing method of medium-speed pulverizer separator guiding device wear surface according to claim 1, special
Sign is: when the abrasion end face in separation guiding device occurs worn out, adopts and is manufactured by the following method:
S31, leak stopping is carried out by the way of pasting board to the abrasion worn out position in end face, while the prefabricated depressed area on pasting board；
S32, position of the residual thickness less than 8mm in abrasion end face is first sliced off the region, then overleaf pasting board, while
Prefabricated depressed area on pasting board.
S33, depressed area is measured using manual measurement or reverse camera means, obtains the three-dimensional in abrasion end wear region
Mathematical model.
S34, eroded area is layered with Slice Software, lift height 1-6mm simultaneously obtains every layer of mathematical model.
S35, successively depressed area and cutting area are filled up using electric arc 3D printing technique according to every layer of mathematical model；
S36, wear surface region is welded completely using single track straight line or the weldering of single track curve, wherein the butt welding number of plies is layer 2-4, butt welding thickness
For 4-16mm.
10. a kind of reproducing method of medium-speed pulverizer separator guiding device wear surface according to claim 8, special
Sign is: the pasting board in the S21 is the rich chromium cast iron plate or build-up wear-resistant plate of no prefabricated recess.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112989544A (en) * | 2019-12-12 | 2021-06-18 | 江苏瑞米克金属技术有限公司 | Curved surface overlaying method, system, computer storage medium and electronic device |
| CN114905222A (en) * | 2022-04-11 | 2022-08-16 | 中国第一汽车股份有限公司 | Method for welding and repairing parting surface pressure stack abrasion of aluminum alloy die-casting die |
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| US20120174400A1 (en) * | 2005-09-23 | 2012-07-12 | Riley Power Inc. | Split fan wheel and split shroud assemblies and methods of manufacturing and assemblying the same |
| US20170021362A1 (en) * | 2010-11-22 | 2017-01-26 | General Electric Technology Gmbh | Oscillation monitor for pulverizer journal assembly |
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| CN208260886U (en) * | 2017-05-17 | 2018-12-21 | 南京格林兰德节能科技有限公司 | A kind of guiding wimble device for medium-speed pulverizer |
| CN109382172A (en) * | 2018-11-30 | 2019-02-26 | 厦门金邦达实业有限责任公司 | A kind of integral type guiding device and bowl pulverizer |
| CN109382171A (en) * | 2018-11-30 | 2019-02-26 | 厦门金邦达实业有限责任公司 | A kind of split type inner cone body device and bowl pulverizer |
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| CN112989544A (en) * | 2019-12-12 | 2021-06-18 | 江苏瑞米克金属技术有限公司 | Curved surface overlaying method, system, computer storage medium and electronic device |
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| CN114905222B (en) * | 2022-04-11 | 2024-03-15 | 中国第一汽车股份有限公司 | Welding repair method for aluminum alloy die casting die parting surface press pile abrasion |
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