CN105287030B - A kind of processing method of the abnormal positive pincers of Medical oral cavity and the abnormal positive pincers edge of a knife of Medical oral cavity - Google Patents
A kind of processing method of the abnormal positive pincers of Medical oral cavity and the abnormal positive pincers edge of a knife of Medical oral cavity Download PDFInfo
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Abstract
The present invention relates in medical instrument pincers, cut, knife class product, in particular to the processing method of the abnormal positive pincers of a kind of Medical oral cavity and the abnormal positive pincers edge of a knife of Medical oral cavity.A kind of abnormal positive pincers of Medical oral cavity, including the matrix as binding clip, the edge of a knife that laser melting coating has alloy powder to be formed on matrix, the edge of a knife is made of iron(-)base powder, the iron(-)base powder is formed by C, Cr, W, Mo, Ni, Si, Nb, B, RE and Fe melting, powder processed, alloy powder used by cutting edge of the invention forms it into the carbide content of suitable chromium, tungsten, molybdenum etc. in laser cladding process, reduces Si, B content, is conducive to the hardness for improving cutting edge；Since the formation of the carbide such as chromium, tungsten, molybdenum consumes part carbon amounts, matrix is made to become the low-carbon martensite with toughness；Chrome content high simultaneously, so that the corrosion resisting property of cutting edge is better than matrix.
Description
Technical field
The present invention relates in medical instrument pincers, cut, knife class product, in particular to abnormal positive pincers of a kind of Medical oral cavity and medical
The processing method of the abnormal positive pincers edge of a knife in oral cavity.
Background technique
The abnormal positive pincers in oral cavity are common medical instruments in dental operation, and a full set of oral cavity forceps share more than 20 different rule
Lattice are respectively used to the bending, twisting and shearing of the advanced wire such as different-diameter cold-working stainless steel and titanium alloy.Surgical clamp is in mouth
Transluminal operation, it is desirable that surgical instrument requires high convenient for cleaning and disinfection, corrosion resistance.Thus generally passed through using high-class stainless steel
Quenching improves the hardness of cutting edge, and the method is there are edge hardness not enough caliper excessive high hardness, clamp handle easy fracture in use process
And cutting edge the phenomenon that collapsing；Its this ontology made using titanium alloy or stainless steel, using in cutting edge seting welding carbide piece, improve cutting edge
Hardness and wearability lead to occur blade mouth crack or peeling in use process but since alloy sheet is poor with basal body binding force；By
It is heterogeneous material in alloy sheet, inlaid material and matrix, there are potential difference, causes to inlay when operating forceps disinfection and locate easily to become rusty
Erosion.
Although existing patent of invention " denomination of invention: the processing method of a kind of medical calm and the medical calm edge of a knife, notification number:
101940488 B " are related to the processing method of the medical calm edge of a knife, use laser deposited nickel-base alloy material (C:0.6~1.0,
Cr:14~18, Si:3.5~5.5, B:3.0~4.5, Fe:0~15, surplus Ni) it is used as cutting edge, but match from its material composition
Than seeing, belongs to the Ni60 commercial powder of thermal spraying, be not suitable for laser melting coating, i.e., no matter use what laser technical parameters, cladding
Layer is easy to appear crackle, secondly, need to open a groove, complex process in caliper blank before the patent laser melting coating, it is difficult to adapt to
In medical calm manufacture and use performance requirement.
Summary of the invention
In order to solve the above technical problems, the first purpose of the invention is to provide a kind of abnormal positive pincers of Medical oral cavity, should
There is the abnormal edge of a knife just clamped of Medical oral cavity high rigidity to have both toughness and corrosion resisting property, so that the service life of medical calm and performance are big
Width is promoted.A second object of the present invention is to provide a kind of processing methods of the abnormal positive pincers edge of a knife of Medical oral cavity.
In order to realize above-mentioned first goal of the invention, present invention employs technical solutions below:
A kind of abnormal positive pincers of Medical oral cavity, including the matrix as binding clip, laser melting coating has alloy powder to be formed on matrix
The edge of a knife, the edge of a knife is made of iron(-)base powder, the iron(-)base powder be by C, Cr, W, Mo, Ni, Si,
Nb, B, RE and Fe melting, powder processed form, wherein and the weight percent that the weight percent of C is 0.40~0.50, Cr is 20~
The weight percent that the weight percent that 25, W weight percent is 3.5~5.5, Mo is 1.0~1.5, Ni is 2~4, Si's
The weight percent that the weight percent that weight percent is 1.5~2.0, B is 0.5~1.0, Nb is 1.0~2.50, RE's
Weight percent is 0.2~0.8, surplus Fe.
In order to realize above-mentioned second goal of the invention, present invention employs technical solutions below:
A kind of processing method of the abnormal positive pincers edge of a knife of Medical oral cavity, is first pressed into cuboid for pincers blank, and after compression moulding
Pincers blank height it is 0.6~0.8mm lower than the pincers blanks height before compression moulding, then use wavelength for 900~1064nm's
Laser, and the powder sending quantity of iron(-)base powder is adjusted to 20~30g/min, the power density of laser is 10000~
14500w/cm2, laser scanning speed is 5~12mm/s, pincers blank the single track cladding of cutting edge position at height for 0.8~
Cladding is finally had the pincers blank wire cutting of alloy-layer or is milled into edge of a knife shape, wherein is described by the alloy-layer of 1.2mm
Iron(-)base powder is mixed by C, Cr, W, Mo, Ni, Si, Nb, B, RE and Fe, wherein the weight percent of C is 0.40
The weight percent that the weight percent that the weight percent of~0.50, Cr are 20~25, W is 3.5~5.5, Mo is 1.0~
The weight percent that the weight percent that 1.5, Ni weight percent is 2~4, Si is 1.5 ~ 2.0, B is 0.5~1.0, Nb
Weight percent be 1.0~2.50, RE weight percent be 0.2~0.8, surplus Fe.
A kind of processing method of the abnormal positive pincers edge of a knife of Medical oral cavity, first processes a groove in matrix, fills in groove
Alloy powder cladding is formed cladding layer by laser melting coating in a groove, is cut around cladding layer with wire electric discharge by alloy powder
Cut or grind processing excess stock is cut off after, formed the edge of a knife；The matrix, which is used, can obtain HRC30's or more by quenching
Low carbon stainless steel material is made；The edge of a knife is made of iron(-)base powder, the iron(-)base powder be by C, Cr,
W, the elements such as Mo, Ni, Si, Nb, B, RE and Fe are smelting, powder processed forms, wherein the weight percent of C is 0.40~0.50, Cr
Weight percent be 20~25, W weight percent be the weight percent of 3.5~5.5, Mo be the weight of 1.0~1.5, Ni
It is the weight percent of 0.5~1.0, Nb that the weight percent that amount percentage is 2~4, Si, which is the weight percent of 1.5~2.0, B,
It is 0.2~0.8 than the weight percent for 1.0~2.50, RE, surplus Fe.
Advantage of the invention is that used alloy powder formula has high rigidity and corrosion resisting property, therefore of the invention medical
It is high to clamp hardness, is not easy chipping, falls off, disinfection will not get rusty with use process, production and medical calm suitable for medical instrument
Service life be substantially improved with performance；The processing technology of medical calm of the invention is simple simultaneously, eliminate embedded alloy piece or
The cumbersome technical process of pre- recessing when cladding alloy.
Alloy powder used by cutting edge of the invention proportion for adapt to high power density laser cladding feature, design at
Carbon high alloy scope in part category, forms it into the carbide content of suitable chromium, tungsten, molybdenum etc. in laser cladding process, reduces
Si, B content are conducive to the hardness for improving cutting edge；Since the formation of the carbide such as chromium, tungsten, molybdenum consumes part carbon amounts, make matrix
As the low-carbon martensite with toughness；Chrome content high simultaneously, so that the corrosion resisting property of cutting edge is better than matrix.
In addition Nb element is added in alloy powder of the invention proportion, increases the stability of metal carbides, and make to show
The grain size of micro-assembly robot more refines, and improves the toughness of cutting edge, and cutting edge is made to be not easy chipping and fracture while having high rigidity.It should
Powder can be not only used for the cladding of all kinds of abnormal positive pincers cutting edges, it can also be used to top grade operation edge and the wear-resistant portion of other medical instruments
The laser melting coating of position.
Detailed description of the invention
Fig. 1 is the cladding schematic diagram at cutting edge position and alloy-layer of the invention.
Fig. 2 is the matrix of machine-shaping of the present invention and the structural schematic diagram of the edge of a knife.
Specific embodiment
A specific embodiment of the invention is made a detailed explanation with reference to the accompanying drawing.
Embodiment one
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.4%, Cr:22%, W:3.5%, Mo:1.5%, Ni:2%,
Si:1.5%, B:0.6%, Nb:1.5%, RE:0.3% and Fe: surplus.Calculate each intermediate alloys such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount different burn out rates of each element (when calculating consider).
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, by high level of compaction at the cutting edge of filament ends excising forceps blank at 4.8 mm(, 0.8 mm fewer than drawing size).
4, using the laser of wavelength 976nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
11000w/cm2, laser scanning speed 6mm/s, the alloy-layer that single track cladding is about 1.2 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC59~63 of alloy powder proportion its cutting edge alloy-layer after cladding.The shearing test service life of filament
Greater than 10.5 ten thousand times.
Embodiment two
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.45%, Cr:25%, W:4.0%, Mo:1.5%, Ni:
3%, Si:2.0%, B:0.5%, Nb:2.5%, RE:0.5% and Fe: surplus.Calculate each centres such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount (the different burn out rates that each element is considered when calculating) of alloy.
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, at the cutting edge of filament ends excising forceps blank high level of compaction at 5.0 mm(, 0.6 mm fewer than drawing size).
4, using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC62 ~ 66 of the powder mixture ratio its cutting edge after cladding.The shearing test service life of filament is greater than 11.5 ten thousand
It is secondary.
Embodiment three
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.6%, Cr:28%, W:4.0%, Mo:1.5%, Ni:3%,
Si:2.0%, B:0.5%, Nb:2.5%, RE:0.5% and Fe: surplus.Calculate each intermediate alloys such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount different burn out rates of each element (when calculating consider).
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, at the cutting edge of filament ends excising forceps blank high level of compaction at 5.0 mm(, 0.6 mm fewer than drawing size).
4, using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC64 ~ 67 of the powder mixture ratio its cutting edge after cladding, cladding process go out crackle.The shearing test of filament
Service life 1.1 ten thousand times.
Example IV
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.45%, Cr:30%, W:4.0%, Mo:1.5%, Ni:
3%, Si:2.0%, B:1.5%, Nb:2.5%, RE:0.5% and Fe: surplus.Calculate each centres such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount (the different burn out rates that each element is considered when calculating) of alloy.
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, at the cutting edge of filament ends excising forceps blank high level of compaction at 5.0 mm(, 0.6 mm fewer than drawing size).
4, using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC60 ~ 65 of the powder mixture ratio its cutting edge after cladding.The shearing test service life of filament is not more than 2.1 ten thousand
It is secondary, use early fracture.
Embodiment five
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.45%, Cr:28%, W:4.0%, Mo:1.5%, Ni:
3%, Si:3.0%, B:2.5%, Nb:2.5%, RE:0.5% and Fe: surplus.Calculate each centres such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount (the different burn out rates that each element is considered when calculating) of alloy.
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, at the cutting edge of filament ends excising forceps blank high level of compaction at 5.0 mm(, 0.6 mm fewer than drawing size).
4, using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC59 ~ 64 of the powder mixture ratio its cutting edge after cladding, micro-crack out when cladding.The shearing test of filament
Maximum life 2.7 ten thousand times.
Embodiment six
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.45%, Cr:28%, W:4.0%, Mo:1.5%, Ni:
3%, Si:2.0%, B:0.5%, Nb:0%, RE:0.5% and Fe: surplus.Calculate each intermediate conjunction such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount (the different burn out rates that each element is considered when calculating) of gold.
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, at the cutting edge of filament ends excising forceps blank high level of compaction at 5.0 mm(, 0.6 mm fewer than drawing size).
4, using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density is
13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
5, by blank wire cutting or it is milled into cutting edge.
Hardness HRC63 ~ 67 of the powder mixture ratio its cutting edge after cladding, micro-crack out when cladding.The shearing test of filament
Maximum life 3.6 ten thousand times.
Embodiment seven
The processing method of a kind of abnormal positive pincers of Medical oral cavity as depicted in figs. 1 and 2 and the abnormal positive pincers edge of a knife of Medical oral cavity, including
Following steps:
1, by the chemical composition of alloying element (weight percent) C:0.45%, Cr:23%, W:4.0%, Mo:1.5%, Ni:
3%, Si:2.0%, B:0.5%, Nb:2%, RE:0.5% and Fe: surplus.Calculate each intermediate conjunction such as ferrochrome, tungsten iron, ferrosilicon, ferro-boron
The additional amount (the different burn out rates that each element is considered when calculating) of gold.
2, melting in intermediate frequency furnace, powder processed are set according to a conventional method, i.e., high-melting-point element and each intermediate alloy are added by calculation amount
(ferrochrome, molybdenum-iron, ferro-boron etc.) is heated to 1400 ~ 1500 DEG C, it is Ce, La that rare earth RE(is added after slagging-off, refining in intermediate frequency furnace
Mischmetal) and homogenize；In 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+
325 mesh powders.
3, a groove is processed in matrix, above-mentioned alloy powder is filled in groove, by laser melting coating by alloyed powder
Last cladding forms cladding layer in a groove, is processed after cutting off excess stock around cladding layer Wire EDM or mill, shape
At the edge of a knife.Concrete technology: using the laser of 1064nm, above-mentioned powder is selected, adjusts powder sending quantity to 25g/min, power density
For 13000w/cm2, laser scanning speed 7mm/s, the alloy-layer that single track cladding is about 1.0 millimeters at height at cutting edge.
Hardness HRC62~65 of the powder mixture ratio its cutting edge after cladding, flawless.The shearing test maximum life of filament
Greater than 10.6 ten thousand times.
The medical calm cutting edge laser melting coating high hardness and corrosion resistance alloy powder, is mainly characterized by iron(-)base powder
In have higher carbon containing, chromium content and be added to the elements such as Nb, Mo, W, RE, reduce Si, B content, not only can be with the smooth table of matrix
It cuts to form cutting edge again after the cladding of face, cuts to form cutting edge again after the cladding that can also slot on matrix.It is closed after laser melting coating
The height of layer gold is 0.8~1.2mm, then makees stress relief annealing process.For the laser melting coating of scalpel class, use instead as thin light
Spot simultaneously adjusts the parameters such as corresponding laser power and scanning speed.
1 a variety of materials of table and laser parameter are formed by the cutting edge quality table of comparisons
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (4)
1. a kind of processing method of the abnormal positive pincers edge of a knife of Medical oral cavity, it is characterised in that: pincers blank (1) are first pressed into cuboid,
And the pincers blank (1) after compression moulding is highly than pincers blank (1) the low 0.8mm of height before compression moulding, then use wavelength for
The laser of 976nm, and the powder sending quantity of iron(-)base powder is adjusted to 25g/min, the power density of laser is
11000w/cm2, laser scanning speed 6mm/s, the conjunction for being 1.2mm at height in the cutting edge position single track cladding of pincers blank (1)
Cladding is finally had pincers blank (1) wire cutting of alloy-layer (2) or is milled into the edge of a knife (5) shape, wherein is described by layer gold (2)
Iron(-)base powder alloying element according to the following weight percentages be made: C:0.4%, Cr:22%, W:3.5%, Mo:
1.5%, Ni:2%, Si:1.5%, B:0.6%, Nb:1.5%, RE:0.3% and Fe: surplus；When melting powder, by calculation amount
High-melting-point element and each intermediate alloy is added in intermediate frequency furnace, is heated to 1400~1500 DEG C, rare earth RE is added after slagging-off, refining
And homogenize, in 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+325 mesh powder
For the iron(-)base powder.
2. a kind of processing method of the abnormal positive pincers edge of a knife of Medical oral cavity, it is characterised in that: pincers blank (1) are first pressed into cuboid,
And the pincers blank (1) after compression moulding is highly than pincers blank (1) the low 0.6mm of height before compression moulding, then use wavelength for
The laser of 1064nm, and the powder sending quantity of iron(-)base powder is adjusted to 25g/min, the power density of laser is
13000w/cm2, laser scanning speed 7mm/s, the conjunction for being 1.0mm at height in the cutting edge position single track cladding of pincers blank (1)
Cladding is finally had pincers blank (1) wire cutting of alloy-layer (2) or is milled into the edge of a knife (5) shape, wherein is described by layer gold (2)
Iron(-)base powder alloying element according to the following weight percentages be made: C:0.45%, Cr:25%, W:4.0%, Mo:
1.5%, Ni:3%, Si:2.0%, B:0.5%, Nb:2.5%, RE:0.5% and Fe: surplus；When melting powder, by calculation amount
High-melting-point element and each intermediate alloy is added in intermediate frequency furnace, is heated to 1400~1500 DEG C, rare earth RE is added after slagging-off, refining
And homogenize, in 1400 DEG C or so progress gas-atomized powders, powder is sieved after dry and saves, selection -140+325 mesh powder
For the iron(-)base powder.
3. a kind of processing method of the abnormal positive pincers edge of a knife of Medical oral cavity, it is characterised in that: a groove first is processed in matrix (3),
Alloy powder is filled in groove, alloy powder cladding is formed by cladding layer (4) by laser melting coating in a groove, surrounds cladding
After layer (4) Wire EDM or mill processing cut off excess stock, formed the edge of a knife (5)；Specific melting and coating process: it uses
The laser of 1064nm adjusts powder sending quantity to 25g/min, power density 13000w/cm2, laser scanning speed 7mm/s,
The cladding layer that single track cladding is about 1.0 millimeters at height at cutting edge；The matrix (3) can obtain HRC30 using by quenching
Above low carbon stainless steel material is made；The edge of a knife (5) is made of iron(-)base powder, wherein the iron-based conjunction
The alloying element of bronze end according to the following weight percentages is made: C:0.45%, Cr:23%, W:4.0%, Mo:1.5%, Ni:
3%, Si:2.0%, B:0.5%, Nb:2%, RE:0.5% and Fe: surplus；When melting powder, high-melting-point member is added by calculation amount
Plain and each intermediate alloy is heated to 1400~1500 DEG C in intermediate frequency furnace, and rare earth RE is added after slagging-off, refining and homogenizes, in
1400 DEG C or so progress gas-atomized powders, powder are sieved after dry and save, and selection -140+325 mesh powder is described iron-based
Alloy powder.
4. using a kind of abnormal positive pincers of Medical oral cavity made from processing method described in claims 1 or 2 or 3, it is characterised in that: packet
The matrix (3) as binding clip is included, the edge of a knife (5) that laser melting coating has alloy powder to be formed on matrix (3), the edge of a knife (5)
It is made of iron(-)base powder, the iron(-)base powder is by elements such as C, Cr, W, Mo, Ni, Si, Nb, B, RE and Fe
Powder smelting, processed forms, wherein the weight percent of C is that the weight percent of 0.40~0.50, Cr is the weight of 20~25, W
The weight percent that percentage is 3.5~5.5, Mo is that the weight percent of 1.0~1.5, Ni is the weight percent of 2~4, Si
The weight percent that the weight percent that weight percent for 1.5~2.0, B is 0.5~1.0, Nb is 1.0~2.50, RE is
0.2~0.8, surplus Fe.
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| CN106001559A (en) * | 2016-05-13 | 2016-10-12 | 武汉苏泊尔炊具有限公司 | Tool and manufacturing method thereof |
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