CN105729071B - A kind of processing method of high-precision austenite stainless steel steel ball - Google Patents
A kind of processing method of high-precision austenite stainless steel steel ball Download PDFInfo
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Abstract
A kind of processing method of high-precision austenite stainless steel steel ball provided by the invention, belongs to machining technology field, including cuts material, Leng Dun, photosphere, wheel grinding, early grind, outward appearance sorting, two grind, ultra-fine grind, sort, packing.High-carbon steel steel ball after austenitic stainless steel steel ball is mixed into identical size, heat treatment in wheel grinding process, the precision of austenitic stainless steel steel ball can be effectively improved.
Description
Technical field
The invention belongs to machining technology field, more particularly to a kind of processing side of high-precision austenite stainless steel steel ball
Method.
Background technology
Austenitic stainless steel, refer to that there is the stainless steel of austenite structure at normal temperatures.Contain Cr about 18%, Ni 8% in steel
~10%, during C about 0.1%, there is stable austenite structure.Austenitic chromium nickel stainless steel include famous 18Cr-8Ni steel and
Increase Cr, Ni content on this basis and add the high Cr-Ni Series Steels that the elements such as Mo, Cu, Si, Nb, Ti grow up.Ovshinsky
Body stainless steel is nonmagnetic and has high tenacity and plasticity, but intensity is relatively low, it is impossible to is allowed to strengthen by phase transformation, is only capable of passing through
Cold working is strengthened, and such as adds the element such as S, Ca, Se, Te, then with good free-cutting machinability.
At present high speed and precision Digit Control Machine Tool bearing belong to, high-tech bearing species, technology content is higher, development difficulty compared with
Greatly, it is most of at present to need to rely on import, the localization process of high speed and precision Digit Control Machine Tool is seriously govern, has become urgent need
Substitute the key components and parts of import.Bearing is mainly made up of steel ball, inner and outer ring and the part of retainer four, at four big groups of bearing
Into in part, steel ball is weakest link, and the surface texture of steel ball directly affects the life-span of bearing, to bear vibration and noise
Contributive rate is more than 60%, and more than 80% bearing failure comes from the failure of steel ball.
Patent No. ZL96102787.8 patent, it, which produces the processing technology of forged steel ball, includes：Select steel billet, earnestly under
Material, coal combustion heating steel billet, pneumatic hammer die forging, precooling, quenching, tempering, air cooling, wash ball and storage.Steel billet carbon containing 0.78~
0.90%th, silicon 0.75~0.85%, manganese 0.85~0.95%, sulphur are less than or equal to 0.05%, phosphorus and are less than or equal to 0.05%.Should
Process has the disadvantages that：Using hot-cutting, blanking, easily cause steel ball burning and cause surface decarburization phenomenon；Using fire coal side
Formula, which carries out heating to steel ball, is internally conducted heat by outside, its heat time and temperature it is unmanageable (heat time is generally 3~
5 hours), and pollution is easily caused, the yield rate for heating out is relatively low；Steel ball water temperature in quenching is less than 30 DEG C, easily makes
Burst into steel ball, percentage of damage is high；And the composition composition of existing steel ball determines that, in quenching, steel ball is not easy a step and is quenched into steel ball
Core, be unfavorable for the refinement to texture.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of processing method of high-precision austenite stainless steel steel ball,
Including cutting material, Leng Dun, photosphere, heat treatment, wheel grinding, early grind, outward appearance sorting, two grinding, ultra-fine grind, sort, pack, its feature
It is：In described wheel grinding step, size identical with austenitic stainless steel steel ball, the high-carbon steel steel ball of heat treatment are added.
Specifically include following steps：
1) material is cut, austenitic stainless steel bar wire rod is cut off；
2) cold-heading：Bearing steel wire is struck out into steel ball cold heading blank ball, carried out using high-speed cold heading machine and spherical ball mould
Cold-heading；
3) photosphere, using systemic circulation processing technology, eliminate cold-heading annulus and surplus, variation in diameter amount are small；
4) it wheel grinding, will be processed by the steel ball of photosphere processing using ball crusher and emery wheel, and be mixed into phase during processing
Same size, the high-carbon steel steel ball of heat treatment, process velocity：130~140rpm, pressure：3~4Mpa；
5) early grind：It will be processed by the steel ball of double tempering using grinder and cast iron plate, process velocity：80~
90rpm, pressure：2~3Mpa；
6) outward appearance sorts, and throws washing machine using steel ball removal of impurities formula, during cleaning, bulky grain hard grind emery wheel ash, strengthens
Caused microparticle iron foam etc. can separate with steel ball, prevent that bringing rear process into produces ball wound, and be rear process more Precision Machining
Create conditions；
7) two grind, the steel ball after early grind is cleaned is processed using grinder and German import cast iron plate, processed
Speed：30~40rpm, pressure：0.5~2Mpa, processing are ground initial stage using higher rotation speed, and it is left that ball size eliminates 2um
Behind the right side, rotating speed is reduced, pressure is constant, carries out thinner grinding；
8) superfinishing is ground, and superfinishing is carried out on vertical ball lapping machine, does not add abrasive material, using 6000# resin wheels, is added
Work 12~15r/min of speed, pressure 1KN；
9) sort；Chemically or physical method is separated high-carbon steel steel ball and austenitic stainless steel steel ball；
10) pack.
Further, the addition of the mixed high-carbon steel steel ball of described step 3) is not less than the steel by photosphere processing
The 40% of ball quantity.
Further, described step 5) adds early grind medium when carrying out early grind, and described early grind medium is following heavy
Measure the raw material composition of part：15~25 parts of lubricating oil, 3~5 parts of liquid phenolic resin, 1~5 part of silicone oil, 10~20 parts of W2.5 corundum,
5~10 parts of carborundum.
Further, described step 7) adds two and grinds medium when carrying out two and grinding, and described two grind medium to be following heavy
Measure the raw material composition of part：10~15 parts of lubricating oil, 3~5 parts of liquid phenolic resin, 10~15 parts of silicone oil, W1 diamonds 15~20
Part, 5~10 parts of carborundum.
Further, described step 8) is ground carrying out superfinishing, is added superfinishing and is ground medium, described superfinishing grind medium be with
The raw material composition of lower parts by weight：10~15 parts of lubricating oil, 3~5 parts of liquid phenolic resin, 5~10 parts of silicone oil, 15~20 parts, two
10~15 parts of vanadium oxide, 1~4 part of graphene, 3~8 parts of carborundum.
Further, the physical method of described step 9) is magnetic separation technique.
Further, the chemical method of described step 9) is pickling isolation technics.
The beneficial effects of the present invention are：In austenitic stainless steel steel ball identical size, heat are mixed into wheel grinding process
The high-carbon steel steel ball of processing, the percentage of damage of austenitic stainless steel steel ball can be effectively reduced, effectively improves austenitic stainless steel steel
The precision of ball；Simultaneously quenching, wheel grinding, early grind, two grind, ultra-fine grind adds different medium in step, significantly reduce
The finished product austenitic stainless steel steel ball table breakage rate of processing；So that breakage rate is reduced to less than 0.5%.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
Embodiment one
A kind of processing method of high-precision austenite stainless steel steel ball provided by the invention, comprises the following steps：
1st, it is original to prepare：
(1) early grind medium is following original composition：Lubricating oil 15kg, liquid phenolic resin 3kg, silicone oil 1kg, W2.5 corundum
10kg, carborundum 5kg.
(2) two grind medium forms for following raw material：10~15kg of lubricating oil, liquid phenolic resin 3kg, silicone oil 10kg, W1
Diamond 15kg, carborundum 5kg.
(3) superfinishing is ground forms for following raw material：Lubricating oil 10kg, liquid phenolic resin 3kg, silicone oil 5kg, 15kg, dioxy
Change vanadium 10kg, graphene 1kg, carborundum 3kg.
Above-mentioned middle lubricating oil can choose commercially available any lubricating oil, the more lubricating oil of the good thing of the present embodiment selection.
2nd, high-precision austenite stainless steel steel ball processing, comprises the following steps：
1) material is cut, austenitic stainless steel bar wire rod is cut off；
2) cold-heading：Bearing steel wire is struck out into steel ball cold heading blank ball, carried out using high-speed cold heading machine and spherical ball mould
Cold-heading；
3) photosphere, using systemic circulation processing technology, eliminate cold-heading annulus and surplus, variation in diameter amount are small；
4) wheel grinding, the steel ball through Overheating Treatment is processed using ball crusher and emery wheel, be mixed into during processing identical
Size, the high-carbon steel steel ball of heat treatment, vitrified abrasive：180 mesh, process velocity：130rpm, pressure：3Mpa；
5) early grind：It will be processed by the steel ball of double tempering using grinder and cast iron plate, and be mixed into early grind during processing
Medium, process velocity：80rpm, pressure：2Mpa；
6) outward appearance sorts, and throws washing machine using steel ball removal of impurities formula, during cleaning, bulky grain hard grind emery wheel ash, strengthens
Caused microparticle iron foam etc. can separate with steel ball, prevent that bringing rear process into produces ball wound, and be rear process more Precision Machining
Create conditions；
7) two grind, the steel ball after early grind is cleaned is processed using grinder and German import cast iron plate, processed
When be mixed into two and grind medium, process velocity：30rpm, pressure：0.5Mpa, processing are ground initial stage using higher rotation speed, steel ball chi
After very little elimination 2um or so, rotating speed is reduced, pressure is constant, carries out thinner grinding；
8) superfinishing is ground, and superfinishing is carried out on vertical ball lapping machine, does not add abrasive material, using 6000# resin wheels, is added
Man-hour is mixed into superfinishing and grinds medium, process velocity 12r/min, pressure 1KN；
9) sort, sorted using physical technique；Described physical technique is using containing in austenitic stainless steel material
There is more than 95% austenite structure (austenite does not possess magnetic), and high-carbon steel steel ball has magnetic, so being adopted in sorting
The high-carbon steel steel ball in austenitic stainless steel steel ball is separated with electromagnetic technique.
10) pack, during packaging, wrapped up using foamed material.
Embodiment two
A kind of processing method of high-precision austenite stainless steel steel ball provided by the invention, comprises the following steps：
1st, it is original to prepare：
(1) early grind medium is following original composition：Lubricating oil 25kg, liquid phenolic resin 5kg, silicone oil 5kg, W2.5 corundum
20kg, carborundum 10kg.
(2) two grind medium forms for following raw material：Lubricating oil 15kg, liquid phenolic resin 5kg, silicone oil 15kg, W1 Buddha's warrior attendant
Stone 20kg, carborundum 10kg.
(3) superfinishing is ground forms for following raw material：Lubricating oil 15kg, liquid phenolic resin 5kg, silicone oil 10kg, 20kg, dioxy
Change vanadium 15kg, graphene 4kg, carborundum 8kg.
Above-mentioned middle lubricating oil can choose commercially available any lubricating oil, the more lubricating oil of the good thing of the present embodiment selection.
2nd, austenitic stainless steel steel ball processing, comprise the following steps：
1) material is cut, austenitic stainless steel bar wire rod is cut off；
2) cold-heading：Bearing steel wire is struck out into steel ball cold heading blank ball, carried out using high-speed cold heading machine and spherical ball mould
Cold-heading；
3) photosphere, using systemic circulation processing technology, eliminate cold-heading annulus and surplus, variation in diameter amount are small；
4) wheel grinding, the steel ball through Overheating Treatment is processed using ball crusher and emery wheel, be mixed into during processing identical
Size, the high-carbon steel steel ball of heat treatment, vitrified abrasive：220 mesh, process velocity：140rpm, pressure：4Mpa；
5) early grind：It will be processed by the steel ball of double tempering using grinder and cast iron plate, and be mixed into early grind during processing
Medium, process velocity：90rpm, pressure：3Mpa；
6) outward appearance sorts, and throws washing machine using steel ball removal of impurities formula, during cleaning, bulky grain hard grind emery wheel ash, strengthens
Caused microparticle iron foam etc. can separate with steel ball, prevent that bringing rear process into produces ball wound, and be rear process more Precision Machining
Create conditions；
7) two grind, the steel ball after early grind is cleaned is processed using grinder and German import cast iron plate, processed
When be mixed into two and grind medium, process velocity 40rpm, pressure：2Mpa, processing are ground initial stage using higher rotation speed, ball size
After eliminating 2um or so, rotating speed is reduced, pressure is constant, carries out thinner grinding；
8) superfinishing is ground, and superfinishing is carried out on vertical ball lapping machine, does not add abrasive material, using 6000# resin wheels, is added
Man-hour is mixed into superfinishing and grinds medium, process velocity 15r/min, pressure 1KN；
9) sort, sorted using physical technique；Described physical technique is using containing in austenitic stainless steel material
There is more than 95% austenite structure (austenite does not possess magnetic), and high-carbon steel steel ball has magnetic, so being adopted in sorting
The high-carbon steel steel ball in austenitic stainless steel steel ball is separated with electromagnetic technique.
10) pack, during packaging, wrapped up using foamed material.
Embodiment three
A kind of processing method of high-precision austenite stainless steel steel ball provided by the invention, comprises the following steps：
1st, it is original to prepare：
(1) early grind medium is following original composition：Lubricating oil 20kg, liquid phenolic resin 4kg, silicone oil 3kg, W2.5 corundum
15kg, carborundum 8kg.
(2) two grind medium forms for following raw material：Lubricating oil 12kg, liquid phenolic resin 4kg, silicone oil 12kg, W1 Buddha's warrior attendant
Stone 18kg, carborundum 8kg.
(3) superfinishing is ground forms for following raw material：Lubricating oil 12kg, liquid phenolic resin 4kg, silicone oil 8kg, 80kg, dioxy
Change vanadium 12kg, graphene 3kg, carborundum 6kg.
Above-mentioned middle lubricating oil can choose commercially available any lubricating oil, the more lubricating oil of the good thing of the present embodiment selection.
2nd, austenitic stainless steel steel ball processing, comprise the following steps：
1) material is cut, austenitic stainless steel bar wire rod is cut off；
2) cold-heading：Bearing steel wire is struck out into steel ball cold heading blank ball, carried out using high-speed cold heading machine and spherical ball mould
Cold-heading；
3) photosphere, using systemic circulation processing technology, eliminate cold-heading annulus and surplus, variation in diameter amount are small；
4) wheel grinding, the steel ball through Overheating Treatment is processed using ball crusher and emery wheel, be mixed into during processing identical
Size, the high-carbon steel steel ball of heat treatment, vitrified abrasive：180~220 mesh, process velocity：135rpm, pressure：3.5Mpa；
5) early grind：It will be processed by the steel ball of double tempering using grinder and cast iron plate, and be mixed into early grind during processing
Medium, process velocity：85rpm, pressure：2.5Mpa；
6) outward appearance sorts, and throws washing machine using steel ball removal of impurities formula, during cleaning, bulky grain hard grind emery wheel ash, strengthens
Caused microparticle iron foam etc. can separate with steel ball, prevent that bringing rear process into produces ball wound, and be rear process more Precision Machining
Create conditions；
7) two grind, the steel ball after early grind is cleaned is processed using grinder and German import cast iron plate, processed
When be mixed into two and grind medium, process velocity：35rpm, pressure：1Mpa, processing are ground initial stage using higher rotation speed, ball size
After eliminating 2um or so, rotating speed is reduced, pressure is constant, carries out thinner grinding；
8) superfinishing is ground, and superfinishing is carried out on vertical ball lapping machine, does not add abrasive material, using 6000# resin wheels, is added
Man-hour is mixed into superfinishing and grinds medium, process velocity 13r/min, pressure 1KN；
9) sort, sorted using chemical technology；Described physical technique is using containing in austenitic stainless steel material
There is more than 95% austenite structure, there is acid proof feature；And the high carbon content in high-carbon steel steel ball so that it is in acidity
In easily dissolve, so analyzed in sorting using acid technology, specifically, by steel ball be positioned over concentration for 15~
Soak more than 3 days in 24% sulfuric acid solution, after being washed, the steel ball that there is hollow on surface is rejected, and obtains austenite
Stainless steel steel ball.
10) pack, during packaging, wrapped up using foamed material.
Claims (7)
1. a kind of processing method of high-precision austenite stainless steel steel ball, including cut material, Leng Dun, photosphere, heat treatment, emery wheel mill
Cut, early grind, outward appearance sorting, two grind, ultra-fine grind, sort, packing, it is characterised in that：In described wheel grinding step, add with
The identical size of austenitic stainless steel steel ball, the high-carbon steel steel ball of heat treatment；
The processing method of described high-precision austenite stainless steel steel ball；Comprise the following steps：
1) material is cut, austenitic stainless steel bar wire rod is cut off；
2) cold-heading：Bearing steel wire is struck out into steel ball cold heading blank ball, cold-heading is carried out using high-speed cold heading machine and spherical ball mould；
3) photosphere, using systemic circulation processing technology, eliminate cold-heading annulus and surplus, variation in diameter amount are small；
4) it wheel grinding, will be processed by the steel ball of photosphere processing using ball crusher and emery wheel, and be mixed into identical chi during processing
Very little, heat treatment high-carbon steel steel ball, process velocity：130~140rpm, pressure：3~4Mpa；
5) early grind：It will be processed by the steel ball of double tempering using grinder and cast iron plate, process velocity：80~90rpm,
Pressure：2~3Mpa；
6) outward appearance sorts, and throws washing machine using steel ball removal of impurities formula, during cleaning, bulky grain hard grind emery wheel ash, reinforcing produce
Microparticle iron foam etc. can be separated with steel ball, prevent that bringing rear process into produces ball wound, and create for rear process more Precision Machining
Condition；
7) two grind, the steel ball after early grind is cleaned is processed using grinder and German import cast iron plate, process velocity：
30~40rpm, pressure：0.5~2Mpa, processing are ground initial stage using higher rotation speed, after ball size eliminates 2um or so,
Rotating speed is reduced, pressure is constant, carries out thinner grinding；
8) superfinishing is ground, and superfinishing is carried out on vertical ball lapping machine, does not add abrasive material, using 6000# resin wheels, processing speed
Spend 12~15r/min, pressure 1KN；
9) sort；Chemically or physical method is separated high-carbon steel steel ball and austenitic stainless steel steel ball；
10) pack.
2. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
3) addition of mixed high-carbon steel steel ball is not less than 40% of the steel ball number by photosphere processing.
3. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
5) when carrying out early grind, early grind medium is added, described early grind medium forms for the raw material of following parts by weight：Lubricating oil 15~25
Part, 3~5 parts of liquid phenolic resin, 1~5 part of silicone oil, 10~20 parts of W2.5 corundum, 5~10 parts of carborundum.
4. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
7) when progress two is ground, two is added and grinds medium, described two, which grind the raw material that medium is following parts by weight, forms：Lubricating oil 10~15
Part, 3~5 parts of liquid phenolic resin, 10~15 parts of silicone oil, 15~20 parts of W1 diamonds, 5~10 parts of carborundum.
5. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
8) ground in progress superfinishing, add superfinishing and grind medium, described superfinishing is ground the raw material that medium is following parts by weight and formed：Lubricating oil 10
~15 parts, 3~5 parts of liquid phenolic resin, 5~10 parts of silicone oil, 15~20 parts, 10~15 parts of vanadium dioxide, 1~4 part of graphene,
3~8 parts of carborundum.
6. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
9) physical method is magnetic separation technique.
7. the processing method of high-precision austenite stainless steel steel ball as claimed in claim 1, it is characterised in that：Described step
9) chemical method is pickling isolation technics.
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| CN106735265A (en) * | 2016-11-17 | 2017-05-31 | 安顺市虹翼特种钢球制造有限公司 | Method for processing steel ball |
| CN106736291A (en) * | 2016-12-28 | 2017-05-31 | 大连昊明钢珠制造有限公司 | A kind of steel ball production technology |
| CN107130181A (en) * | 2017-06-22 | 2017-09-05 | 合肥力和机械有限公司 | A kind of household electrical appliances special bearing steel ball and preparation method thereof |
| CN107312923A (en) * | 2017-07-15 | 2017-11-03 | 芜湖乾凯材料科技有限公司 | A kind of high crush load steel ball and its processing method |
| CN110814644B (en) * | 2019-10-15 | 2021-06-11 | 常熟市宝丰精工钢球有限公司 | High-strength austenitic steel ball |
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| JPH07115099B2 (en) * | 1987-12-18 | 1995-12-13 | 株式会社日立製作所 | Hardened ball cutting method |
| FR2715338B1 (en) * | 1994-01-25 | 1996-04-12 | Mangachoc Applic & Techn Ste | High mechanical resistance ball joint and manufacturing process. |
| CN101186005A (en) * | 2007-11-30 | 2008-05-28 | 洛阳轴研科技股份有限公司 | Processing technique of 9Cr18 stainless steel capable of being improved to G3 level |
| CN101954571B (en) * | 2010-09-16 | 2012-04-11 | 温州市龙湾沙城钢球厂 | Manufacturing process of 0.68 mm nonmagnetic alloy balls |
| CN103008994B (en) * | 2012-12-12 | 2015-03-11 | 山东东阿钢球集团有限公司 | Production method for dedicated steel ball for bearing of high-speed high-precision numerical control machine tool |
| CN104972273A (en) * | 2015-06-04 | 2015-10-14 | 无锡市飞云球业有限公司 | Production process for precise high-speed mute bearing steel ball |
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