CN102653048A - Machining method of steel ball for nipple type water fountain - Google Patents
Machining method of steel ball for nipple type water fountain Download PDFInfo
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- CN102653048A CN102653048A CN2012101685613A CN201210168561A CN102653048A CN 102653048 A CN102653048 A CN 102653048A CN 2012101685613 A CN2012101685613 A CN 2012101685613A CN 201210168561 A CN201210168561 A CN 201210168561A CN 102653048 A CN102653048 A CN 102653048A
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Abstract
The invention discloses a machining method of a steel ball for a nipple type water fountain. The machining method comprises the following steps of: carrying out cold-heating and ball-polishing on a selected a 3Cr13 or 420 material; carrying out heat treatment: under the protection of nitrogen gas, preheating to 850-860 DEG C, keeping the heat for 30-35 min and continually raising the temperature, and after the temperature is 1010-1015 DEG C, keeping the heat for 45-50 min and quenching; then cooling to a room temperature and freezing within a range of -90 DEG C to -80 DEG C, keeping the heat for 30-35 min and recovering to the room temperature, and annealing at 250-260 DEG C for 3-4 hours; carrying out surface strengthening treatment and carrying annealing treatment after strengthening; carrying out hard refining; carrying out accurate refining; carrying out acid washing by strong acid and picking steel balls of mixed material steel types; carrying out atomization and spraying by utilizing saturated salt water, exposing in the air for 12-24 hours to remove oxidized steel balls; and carrying out super-accurate milling; and packaging. According to the machining method disclosed by the invention, the surface strength of the steel balls and the geometric accuracy can be improved, so that the quality of the steel balls is good and the corrosion resistance is strong.
Description
Technical field
The invention belongs to the Machining Technology field, specifically relate to the processing method of a kind of nipple-shape water fountain with steel ball.
Background technology
At present, along with the development of China's herding industry, " chicken is used the nipple-shape water fountain " progressively got and replaced " cone valve type water fountain ".Both compare nipple-shape and possess following superiority: 1, qualification rate is high: the disposable qualification rate of installing and using can reach 98%, and " cone valve type " once mounting uses qualification rate can only reach 85%.2, long service life: be 1 year " cone valve type " average life, and be 2.5 years " nipple-shape " average life.3, stable performance: " cone valve type " in use intermittence, water leakage ratio was 25%, and " nipple-shape " in use intermittence, water leakage ratio was 2%.4, customer using cost is low: " nipple-shape " is lower more than 5 times than " cone valve type " use cost.5. easy to maintenance: the suspension type easy installation and removal, be convenient to maintain and replace, do not influence the normal use of waterline.
The stainless steel steel ball is one of " nipple-shape " water fountain critical piece." nipple-shape " water fountain requires the stainless steel steel ball: 1, circularity is good; 2, roughness is good; 3, good in oxidation resistance; 4, no magnetic (no adsorptivity); 5, there is not wounded or disabled crackle.The operation principle of steel ball is: steel ball is blocked the water source by deadweight and seal receptacle cooperation.A push rod is arranged under the steel ball, and when chicken is favored with push rod with mouth, push rod is stirred steel ball and is separated with seal receptacle, and the water fountain water outlet supplies chicken to drink; When chicken stopped favoring with, steel ball leaned on the sealing water source from the recondition origin-location.In the prior art, the steel ball that supporting " nipple-shape " water fountain is used all is that other industry special-purpose steel ball substitutes, and causes product quality to have a large amount of problems.With pure stainless steel like the steel ball of materials such as 1Cr18ni9,0Cr18ni9,304,304L, though corrosion resistance is good, but geometric accuracy, surface quality is bad, causes product to leak seriously.Like the steel ball of materials such as 9Cr18,9Cr18mo, 420,440c, geometric accuracy, surface quality are good, but because carbon containing is high, cause the product corrosion-resistant with the high carbon chromium stainless steel, and service life is short.The process of tradition steel ball comprises: steps such as blanking, heat treatment, hard grind, pickling, correct grinding, the shortcoming of this processing method: the case hardness of processing steel ball is low, wear no resistance, geometric accuracy is bad.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming and a kind of processing method that can improve the strong nipple-shape water fountain of surface strength, geometric accuracy, corrosion resistance with steel ball is provided.
A kind of nipple-shape water fountain of the present invention comprises the steps: with the processing method of steel ball
(1) raw material: select 3Cr13 or 420 materials for use;
(2) cold-heading:, and stay the allowance of 0.5mm ~ 1mm with raw material cold forging, compression moulding;
(3) photosphere: remove the cold-heading endless belt, and the preparatory processing moulding, clean after the machine-shaping, remove impurity, stub bar;
(4) heat treatment: under the nitrogen protection, be preheating to 850-860 ℃, after insulation in 30-35 minute, continue to heat up, during to 1010-1015 ℃, be incubated after 45-50 minute and quench; Be chilled to normal temperature then ,-90--80 ℃ freezing, and kept 30-35 minute, return to normal temperature after, with 250-260 ℃ of tempering 3-4 hour;
(5) surface peening: strengthen machine with steel ball, carry out the product surface intensive treatment, strengthen and to carry out temper once more after good, temperature is controlled in 155 ± 5 ℃ of the temperature, is incubated 1.5-2 hour;
(6) hard grind: use steel ball grinding equipment, adopt high hard emery wheel to carry out the grinding integer, remove rough surface;
(7) finish grind: finish grind with correct grinding equipment and make product removal 0.02MM, to guarantee to remove preceding process product remained on surface defective.Processing back precision will reach GB GB-308-2002 standard G40 level;
(8) pickling: carry out pickling with strong acid, choose the steel ball of batch mixing steel grade;
(9) anti-oxidant selecting: be atomizing spray 1-1.5 hour of saturated brine, in air, expose 12-24 hour, remove oxidized person;
(10) ultra lappingout: after carrying out microstoning with steel ball grinding equipment, precision reaches GB GB-308-2002 standard G10 class precision.
(11) packing: after cleaning, dehydration, oiling, pack.
Above-mentioned a kind of nipple-shape water fountain is with the processing method of steel ball, wherein: strong acid is nitric acid.
The present invention compares with prior art, has tangible beneficial effect, can be known by above scheme, selects 3Cr13 or 420 materials for use, and this material is in similar material, and price is minimum, and phosphorus content is moderate, can improve ball hardness, circularity is good, is difficult for causing product to leak; Adopt freezing processing and surface Hardening Treatment, improve steel ball surface hardness, through the steel ball of surface peening, its case hardness HRC can improve the 3-4 degree, reaches HRC59-HRC62, has ensured the raising that improves steel ball geometric accuracy and surface accuracy; With the steel ball after the heat treatment, adopt steel ball to strengthen machine, carry out the product surface intensive treatment, steel ball surface hardness is improved, improve the density of steel ball surface tissue, increase wearability, reduce surface roughness; Adopt anti-oxidant selecting, do atomizing spray, in air, expose more than 12 hours with saturated brine, like surperficial defectiveness, will soon oxide etch, the oxidation steel ball to be chosen scrap, good steel ball does not then have, and can improve the non-oxidizability of steel ball.Through this processing method, improved hardness, circularity and the surface accuracy of steel ball, thereby increased the service life of steel ball, and reduced production cost.
Below, further specify beneficial effect of the present invention through the specific embodiment.
The specific embodiment
Embodiment 1
A kind of nipple-shape water fountain comprises the steps: with the processing method of steel ball
(1) raw material: select the 3Cr13 material for use;
(2) cold-heading:, and stay the allowance of 0.5mm ~ 1mm with raw material cold forging, compression moulding;
(3) photosphere: remove the cold-heading endless belt, and the preparatory processing moulding, remove impurity, stub bar;
(4) heat treatment: use Equipment for Heating Processing, under nitrogen protection, be preheating to 850-860 ℃, after insulation in 30 minutes, continue to heat up, during to 1010-1015 ℃, be incubated after 45 minutes and quench; Be chilled to normal temperature then ,-80 ℃ freezing, and kept 30 minutes, return to normal temperature after, with 250-260 ℃ of tempering 3 hours;
(5) surface peening: strengthen machine with steel ball, carry out the product surface intensive treatment, strengthen and to carry out temper once more after good, temperature is controlled in 155 ± 5 ℃ of the temperature, is incubated 1.5 hours;
(6) hard grind: use steel ball grinding equipment, adopt high hard emery wheel to carry out the grinding integer, remove rough surface;
(7) finish grind: finish grind with correct grinding equipment and make product removal 0.02MM, to guarantee to remove preceding process product remained on surface defective.Processing back precision will reach GB GB-308-2002 standard G40 level;
(8) pickling: carry out pickling with nitric acid, choose the steel ball of batch mixing steel grade;
(9) anti-oxidant selecting: did atomizing spray 1 hour with saturated brine, in air, expose, in air, expose 12 hours, remove oxidized person;
(10) ultra lappingout: after carrying out microstoning with steel ball grinding equipment, precision reaches GB GB-308-2002 standard G10 class precision.；
(11) packing: after cleaning, dehydration, oiling, pack.
Embodiment 2
A kind of nipple-shape water fountain comprises the steps: with the processing method of steel ball
(1) raw material: select 420 materials for use;
(2) cold-heading:, and stay the allowance of 0.5mm ~ 1mm with raw material cold forging, compression moulding;
(3) photosphere: remove the cold-heading endless belt, and the preparatory processing moulding, remove impurity, stub bar;
(4) heat treatment: use Equipment for Heating Processing, under nitrogen protection, be preheating to 850-860 ℃, after insulation in 35 minutes, continue to heat up, during to 1010-1015 ℃, be incubated after 50 minutes and quench; Be chilled to normal temperature then ,-90 ℃ freezing, and kept 35 minutes, return to normal temperature after, with 250-260 ℃ of tempering 4 hours;
(5) surface peening: strengthen machine with steel ball, carry out the product surface intensive treatment, strengthen and to carry out temper once more after good, temperature is controlled in 155 ± 5 ℃ of the temperature, is incubated 2 hours;
(6) hard grind: use steel ball grinding equipment, adopt high hard emery wheel to carry out the grinding integer, remove rough surface;
(7) finish grind: finish grind with correct grinding equipment and make product removal 0.02MM, to guarantee to remove preceding process product remained on surface defective.Processing back precision will reach GB GB-308-2002 standard G40 level;
(8) pickling: carry out pickling with nitric acid, choose the steel ball of batch mixing steel grade;
(9) anti-oxidant selecting: did atomizing spray 1.5 hours with saturated brine, in air, expose, in air, expose 24 hours, remove oxidized person;
(10) ultra lappingout: after carrying out microstoning with steel ball grinding equipment, precision reaches GB GB-308-2002 standard G10 class precision.；
(11) packing: after cleaning, dehydration, oiling, pack.
Embodiment 3
A kind of nipple-shape water fountain comprises the steps: with the processing method of steel ball
(1) raw material: select the 3Cr13 material for use;
(2) cold-heading:, and stay the allowance of 0.5mm ~ 1mm with raw material cold forging, compression moulding;
(3) photosphere: remove the cold-heading endless belt, and the preparatory processing moulding, remove impurity, stub bar;
(4) heat treatment: use Equipment for Heating Processing, under nitrogen protection, be preheating to 850-860 ℃, after insulation in 35 minutes, continue to heat up, during to 1010-1015 ℃, be incubated after 50 minutes and quench; Be chilled to normal temperature then ,-85 ℃ freezing, and kept 32 minutes, return to normal temperature after, with 250-260 ℃ of tempering 3.5 hours;
(5) surface peening: strengthen machine with steel ball, carry out the product surface intensive treatment, strengthen and to carry out temper once more after good, temperature is controlled in 155 ± 5 ℃ of the temperature, is incubated 2 hours;
(6) hard grind: use steel ball grinding equipment, adopt high hard emery wheel to carry out the grinding integer, remove rough surface;
(7) finish grind: finish grind with correct grinding equipment and make product removal 0.02MM, to guarantee to remove preceding process product remained on surface defective.Processing back precision will reach GB GB-308-2002 standard G40 level;
(8) pickling: carry out pickling with nitric acid, choose the steel ball of batch mixing steel grade;
(9) anti-oxidant selecting: did atomizing spray 1.5 hours with saturated brine, in air, expose, in air, expose 18 hours, remove oxidized person;
(10) ultra lappingout: after carrying out microstoning with steel ball grinding equipment, precision reaches GB GB-308-2002 standard G10 class precision.；
(11) packing: after cleaning, dehydration, oiling, pack.
Because product adopts 3Gr13 or 420 materials, the no special standard of country adopts national standard (according to GB GB308-2002 standard) the part main material characteristic index contrast with steel ball of bearing steel at present.Situation is listed following table in:
| Project | The steel ball of bearing steel of traditional handicraft | The steel ball that the present invention produces |
| Hardness | HRC48 | HRC59-HRC62 |
| Surface roughness | Ra0.2 | Ra0.09 |
| Circularity | 0.25 | 0.09-0.11 |
Draw to draw a conclusion from above contrast: the steel ball that this processing technology is produced, the performance indications of hardness, surface roughness, circularity aspect all are higher than like product.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Anyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (2)
1. an a kind of nipple-shape water fountain comprises the steps: with the processing method of steel ball
(1) raw material: select 3Cr13 or 420 materials for use;
(2) cold-heading:, and stay the allowance of 0.5mm ~ 1mm with raw material cold forging, compression moulding;
(3) photosphere: remove the cold-heading endless belt, and the preparatory processing moulding, clean after the machine-shaping, remove impurity, stub bar;
(4) heat treatment: under the nitrogen protection, be preheating to 850-860 ℃, after insulation in 30-35 minute, continue to heat up, during to 1010-1015 ℃, be incubated after 45-50 minute and quench; Be chilled to normal temperature then ,-90--80 ℃ freezing, and kept 30-35 minute, return to normal temperature after, with 250-260 ℃ of tempering 3-4 hour;
(5) surface peening: strengthen machine with steel ball, carry out the product surface intensive treatment, strengthen and to carry out temper once more after good, temperature is controlled in 155 ± 5 ℃ of the temperature, is incubated 1.5-2 hour;
(6) hard grind: use steel ball grinding equipment, adopt high hard emery wheel to carry out the grinding integer, remove rough surface;
(7) finish grind: finish grind with correct grinding equipment and make product removal 0.02MM, to guarantee to remove preceding process product remained on surface defective;
Processing back precision will reach GB GB-308-2002 standard G40 level;
(8) pickling: carry out pickling with strong acid, choose the steel ball of batch mixing steel grade;
(9) anti-oxidant selecting: be atomizing spray 1-1.5 hour of saturated brine, in air, expose 12-24 hour, remove oxidized person;
(10) ultra lappingout: after carrying out microstoning with steel ball grinding equipment, precision reaches GB GB-308-2002 standard G10 class precision;
(11) packing: after cleaning, dehydration, oiling, pack.
2. nipple-shape water fountain as claimed in claim 1 is characterized in that with the processing method of steel ball: strong acid is nitric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101685613A CN102653048A (en) | 2012-05-28 | 2012-05-28 | Machining method of steel ball for nipple type water fountain |
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| CN2012101685613A CN102653048A (en) | 2012-05-28 | 2012-05-28 | Machining method of steel ball for nipple type water fountain |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848157A (en) * | 2012-09-24 | 2013-01-02 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls with long service life and used for constant velocity joint (CVJ) of automobile |
| CN103878541A (en) * | 2014-02-26 | 2014-06-25 | 椿中岛机械(太仓)有限公司 | Special stainless steel ball production process for medical instruments |
| CN104259790A (en) * | 2014-10-04 | 2015-01-07 | 芜湖市宇恒特种钢球有限公司 | Method for machining high-precision steel ball |
| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848157A (en) * | 2012-09-24 | 2013-01-02 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls with long service life and used for constant velocity joint (CVJ) of automobile |
| CN102848157B (en) * | 2012-09-24 | 2015-03-18 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls with long service life and used for constant velocity joint (CVJ) of automobile |
| CN103878541A (en) * | 2014-02-26 | 2014-06-25 | 椿中岛机械(太仓)有限公司 | Special stainless steel ball production process for medical instruments |
| CN104259790A (en) * | 2014-10-04 | 2015-01-07 | 芜湖市宇恒特种钢球有限公司 | Method for machining high-precision steel ball |
| 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 |
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Application publication date: 20120905 |