CN105063581A - Method for manufacturing high-tenacity automobile hardware - Google Patents
Method for manufacturing high-tenacity automobile hardware Download PDFInfo
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- CN105063581A CN105063581A CN201510479631.0A CN201510479631A CN105063581A CN 105063581 A CN105063581 A CN 105063581A CN 201510479631 A CN201510479631 A CN 201510479631A CN 105063581 A CN105063581 A CN 105063581A
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- handware
- nitriding
- nickel plating
- manufacture method
- high tenacity
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Abstract
The invention discloses a method for manufacturing high-tenacity automobile hardware. The method is characterized by including the following steps of S01, casting a mould, S02, manufacturing a blank, S03, conducting machining and forming, S04, conducting galvanizing, S05, conducting chromate passivating, S06, conducting nickel plating, S07, conducting nitriding, wherein the hardware generated after nickel plating is conducted is placed into a part heat treatment furnace to be subjected to nitriding processing, the nitriding temperature ranges from 700 DEG C to 800 DEG C, the nitriding time ranges from 20 hours to 40 hours, ammonia gas serves as a nitriding agent, diffusion is conducted for 3 hours to 4 hours after nitriding is completed, and a product is sent to quenching liquid after diffusion is completed, S08, conducting cleaning and polishing, wherein parts generated after quenching treatment is conducted are cleaned and dried, and deburring is conducted after polishing is conducted and S09 conducting inspecting. According to the method for manufacturing the high-tenacity automobile hardware, the hardware is good in machinable property, good in tenacity and suitable for being widely applied and popularized.
Description
Technical field
The present invention relates to a kind of automobile handware manufacture method of high tenacity, belong to Manufacturing Technology for Automotive Parts field.
Background technology
The manufacture method of automobile handware is a lot, but handware ubiquity quality prepared by current manufacture method is general, easy-to-rust, and adaptive capacity to environment is poor, and work-ing life is short; Non-desulfurization process causes fragility large, and easy fracture, exists potential safety hazard; The problems such as uneven coating is even, and coating easily comes off, wear resisting property difference.Further, the handware ubiquity poor toughness of current manufacture technics, the problem of processability difference.
Summary of the invention
Technical problem to be solved by this invention is, provides the manufacture method of the automobile handware that a kind of toughness is high, processability is good; Further, the invention provides a kind of quality good, not easily corrosion, the manufacture method of the automobile handware of the high tenacity of long service life; Further, the invention provides handware not easy fracture after a kind of desulfurization, the automobile handware manufacture method method of the high tenacity that security is good; Further, the invention provides a kind of coating and combine jail, difficult drop-off, the automobile handware manufacture method of the uniform high tenacity of coating.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
An automobile handware manufacture method for high tenacity, is characterized in that: comprise the following steps:
S01, mold: according to the shape casting sand mo(u)ld of handware;
S02, prepares blank: casting pouring sand mo(u)ld after metal melting into, after having cast, being cooled to room temperature, takes out blank;
S03, machine-shaping: by blank by turning and/or milling process machine-shaping;
S04, zinc-plated;
S05, chromating;
S06, nickel plating;
S07, nitriding: the handware after nickel plating is put into part heat treatment furnace and carries out Nitrizing Treatment, nitriding temperature is 700 ~ 800 DEG C, and nitriding time is 20 ~ 40h, and nitriding medium is ammonia, and diffusion 3 ~ 4h after nitriding completes, delivers to after having spread in hardening liquid;
S08, cleaning and polishing: dry after the Cleaning of Parts after quench treatment is clean, carry out polished finish deburring;
S09, inspection: the handware after quality examination polishing, vanning after qualified handware packaging, is put in warehouse.
Described metal comprises one or more in iron, steel and aluminium.
S02 step also comprises sulfur removal technology.
Described zinc-plated processing step is:
A, degreasing: adopt water-base metal degreased cleaning agent to carry out surface and deoil;
B, pickling: adopt 20% hydrochloric acid and 1 ~ 3g/L hexamethylenetetramine to carry out pickling 9 ~ 15 seconds, temperature is 25 ~ 35 DEG C; Pickling after washing is to neutral, dry;
C, leaching plating assistant agent: the handware obtained by step b puts into NH
4cl and ZnCl
2mixed aqueous solution in, NH
4cl concentration is 18 ~ 22%, ZnCl
2concentration is 2.8 ~ 3.2%, and the temperature of mixed aqueous solution is 60 DEG C, and soak time is 15 ~ 20min, described mixed aqueous solution surface oil sealing; After immersion completes, deoil in handware surface, washing, dry;
D, preparation galvanizing solution: get 100 ~ 110g/LZnCl
2, 300 ~ 350g/LNaOH, 20 ~ 25g/L Seignette salt, 10 ~ 15g/L potassium pyrophosphate mixes in distilled water;
E, zinc-plated process: the handware in step c is put into galvanizing solution, 50 ~ 60 DEG C keep taking out after 30 ~ 40 seconds, flood 50 seconds again, be then washed to neutrality after washing in the concentrated sulfuric acid solution of 30%, dry.
The processing step of described chromating is that the handware obtained by step e is put into chromic salt mixing solutions and carried out passivation, the Na containing 85 ~ 90g/L in chromic salt mixing solutions
2cr
2o
7and the sulfuric acid of 2.5mL/L, passivation time is 20 ~ 30min, and passivation temperature is room temperature.
Described hardening liquid is oil bath, and described quenching temperature is 200 ~ 250 DEG C, and the described cool time is 5 ~ 10min.
The index of described quality examination comprises outward appearance, thickness of coating, hardness, resistance of oxidation and wear resistance.
The composition of described oil sealing is glycerine.
Also add in step b and have inhibiter.
The processing step of described nickel plating is:
F, the preparation of nickel plating solution: the brightening agent A getting 30 ~ 40g/L nickelous hypophosphite, 30 ~ 40g/L potassiumphosphate, 5 ~ 8g/L Trisodium Citrate, citric acid 20 ~ 25mL/L, 1 ~ 3mL/L Potassium Iodate, 1 ~ 3mL/L aspartic acid and 1 ~ 3mL/L adds in distilled water, is mixed with nickel plating solution after mixing;
G, Nickel Plating Treatment: the handware after chromating is put into nickel plating solution, 82 ~ 85 DEG C of Nickel Plating Treatment 1 ~ 2min, zinc-plated complete after, take out, be washed to neutrality, dry.
The automobile handware manufacture method of a kind of high tenacity provided by the invention, the setting of nitriding, improves toughness and the processability of handware; Zinc-platedly to arrange with the technique of chromating, obtain a kind of quality good, not easily corrosion, the automobile handware of long service life; The setting of nickel plating, further enhancing the wear resistance of handware, high polishability and high temperature oxidation resistance, and the temperature effectively reducing quenching technology, reduce production cost; S02 step also comprises the setting of sulfur removal technology, achieves handware not easy fracture, the characteristic that security is good; The setting of degreasing and pickling, achieves the strong adhesion of zinc coating, difficult drop-off; The setting of leaching plating assistant agent, enhances the bonding force of zinc coating and blank, makes coating difficult drop-off further; The setting of galvanizing solution, more traditional pot galvanize mode is different, the zinc-plated mode of this mixing solutions of the present invention formula, and coating is even, zinc-plated mild condition, and plating piece surface is without list edge, and zinc coating operations is more safe and reliable; The setting of chromating, improves handware surface oxidation-resistant performance, can reduce or extend the time of occurrence of white rust, substantially prolongs the work-ing life of handware; The composition of oil sealing is the setting of glycerine, decreases NH
4the volatilization of Cl, ensures normally carrying out of leaching plating assistant agent.The automobile handware manufacture method of a kind of high tenacity provided by the invention, handware processability is good, good toughness, is applicable to wide popularization and application.
Embodiment
Below the present invention is further described.
embodiment 1:
An automobile handware manufacture method for high tenacity, is characterized in that: comprise the following steps:
S01, mold: according to the shape casting sand mo(u)ld of handware;
S02, prepares blank: casting pouring sand mo(u)ld after metal melting into, after having cast, being cooled to room temperature, takes out blank;
S03, machine-shaping: by blank by turning and/or milling process machine-shaping;
S04, zinc-plated;
S05, chromating;
S06, nickel plating;
S07, nitriding: the handware after nickel plating is put into part heat treatment furnace and carries out Nitrizing Treatment, nitriding temperature is 700 DEG C, and nitriding time is 20h, and nitriding medium is ammonia, spreads 3h, deliver in hardening liquid after having spread after nitriding completes;
S08, cleaning and polishing: dry after the Cleaning of Parts after quench treatment is clean, carry out polished finish deburring;
S09, inspection: the handware after quality examination polishing, vanning after qualified handware packaging, is put in warehouse.
Described metal comprises one or more in iron, steel and aluminium.
S02 step also comprises sulfur removal technology.
Described zinc-plated processing step is:
A, degreasing: adopt water-base metal degreased cleaning agent to carry out surface and deoil;
B, pickling: adopt 20% hydrochloric acid and 1g/L hexamethylenetetramine to carry out pickling 9 seconds, temperature is 25 DEG C; Pickling after washing is to neutral, dry;
C, leaching plating assistant agent: the handware obtained by step b puts into NH
4cl and ZnCl
2mixed aqueous solution in, NH
4cl concentration is 18%, ZnCl
2concentration is 2.8%, and the temperature of mixed aqueous solution is 60 DEG C, and soak time is 15min, described mixed aqueous solution surface oil sealing; After immersion completes, deoil in handware surface, washing, dry;
D, preparation galvanizing solution: get 100g/LZnCl
2, 300g/LNaOH, 20g/L Seignette salt, 10g/L potassium pyrophosphate mixes in distilled water;
E, zinc-plated process: the handware in step c is put into galvanizing solution, 50 ~ 60 DEG C keep taking out after 30 ~ 40 seconds, flood 50 seconds again, be then washed to neutrality after washing in the concentrated sulfuric acid solution of 30%, dry.
The processing step of described chromating is that the handware obtained by step e is put into chromic salt mixing solutions and carried out passivation, the Na containing 85g/L in chromic salt mixing solutions
2cr
2o
7and the sulfuric acid of 2.5mL/L, passivation time is 20min, and passivation temperature is room temperature.
Described hardening liquid is oil bath, and described quenching temperature is 200 DEG C, and the described cool time is 5min.
The index of described quality examination comprises outward appearance, thickness of coating, hardness, resistance of oxidation and wear resistance.
The composition of described oil sealing is glycerine.
Also add in step b and have inhibiter.
The processing step of described nickel plating is:
F, the preparation of nickel plating solution: the brightening agent A getting 30g/L nickelous hypophosphite, 30g/L potassiumphosphate, 5g/L Trisodium Citrate, citric acid 20mL/L, 1mL/L Potassium Iodate, 1mL/L aspartic acid and 1mL/L adds in distilled water, is mixed with nickel plating solution after mixing;
G, Nickel Plating Treatment: the handware after chromating is put into nickel plating solution, 82 DEG C of Nickel Plating Treatment 1min, zinc-plated complete after, take out, be washed to neutrality, dry.
embodiment 2:
An automobile handware manufacture method for high tenacity, is characterized in that: comprise the following steps:
S01, mold: according to the shape casting sand mo(u)ld of handware;
S02, prepares blank: casting pouring sand mo(u)ld after metal melting into, after having cast, being cooled to room temperature, takes out blank;
S03, machine-shaping: by blank by turning and/or milling process machine-shaping;
S04, zinc-plated;
S05, chromating;
S06, nickel plating;
S07, nitriding: the handware after nickel plating is put into part heat treatment furnace and carries out Nitrizing Treatment, nitriding temperature is 800 DEG C, and nitriding time is 40h, and nitriding medium is ammonia, spreads 4h, deliver in hardening liquid after having spread after nitriding completes;
S08, cleaning and polishing: dry after the Cleaning of Parts after quench treatment is clean, carry out polished finish deburring;
S09, inspection: the handware after quality examination polishing, vanning after qualified handware packaging, is put in warehouse.
Described metal comprises one or more in iron, steel and aluminium.
S02 step also comprises sulfur removal technology.
Described zinc-plated processing step is:
A, degreasing: adopt water-base metal degreased cleaning agent to carry out surface and deoil;
B, pickling: adopt 20% hydrochloric acid and 3g/L hexamethylenetetramine to carry out pickling 15 seconds, temperature is 35 DEG C; Pickling after washing is to neutral, dry;
C, leaching plating assistant agent: the handware obtained by step b puts into NH
4cl and ZnCl
2mixed aqueous solution in, NH
4cl concentration is 22%, ZnCl
2concentration is 3.2%, and the temperature of mixed aqueous solution is 60 DEG C, and soak time is 20min, described mixed aqueous solution surface oil sealing; After immersion completes, deoil in handware surface, washing, dry;
D, preparation galvanizing solution: get 110g/LZnCl
2, 350g/LNaOH, 25g/L Seignette salt, 15g/L potassium pyrophosphate mixes in distilled water;
E, zinc-plated process: the handware in step c is put into galvanizing solution, 60 DEG C keep taking out after 40 seconds, flood 50 seconds again, be then washed to neutrality after washing in the concentrated sulfuric acid solution of 30%, dry.
The processing step of described chromating is that the handware obtained by step e is put into chromic salt mixing solutions and carried out passivation, the Na containing 90g/L in chromic salt mixing solutions
2cr
2o
7and the sulfuric acid of 2.5mL/L, passivation time is 30min, and passivation temperature is room temperature.
Described hardening liquid is oil bath, and described quenching temperature is 250 DEG C, and the described cool time is 10min.
The index of described quality examination comprises outward appearance, thickness of coating, hardness, resistance of oxidation and wear resistance.
The composition of described oil sealing is glycerine.
Also add in step b and have inhibiter.
The processing step of described nickel plating is:
F, the preparation of nickel plating solution: the brightening agent A getting 40g/L nickelous hypophosphite, 40g/L potassiumphosphate, 8g/L Trisodium Citrate, citric acid 25mL/L, 3mL/L Potassium Iodate, 3mL/L aspartic acid and 3mL/L adds in distilled water, is mixed with nickel plating solution after mixing;
G, Nickel Plating Treatment: the handware after chromating is put into nickel plating solution, 85 DEG C of Nickel Plating Treatment 2min, zinc-plated complete after, take out, be washed to neutrality, dry.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an automobile handware manufacture method for high tenacity, is characterized in that: comprise the following steps:
S01, mold: according to the shape casting sand mo(u)ld of handware;
S02, prepares blank: casting pouring sand mo(u)ld after metal melting into, after having cast, being cooled to room temperature, takes out blank;
S03, machine-shaping: by blank by turning and/or milling process machine-shaping;
S04, zinc-plated;
S05, chromating;
S06, nickel plating;
S07, nitriding: the handware after nickel plating is put into part heat treatment furnace and carries out Nitrizing Treatment, nitriding temperature is 700 ~ 800 DEG C, and nitriding time is 20 ~ 40h, and nitriding medium is ammonia, and diffusion 3 ~ 4h after nitriding completes, delivers to after having spread in hardening liquid;
S08, cleaning and polishing: dry after the Cleaning of Parts after quench treatment is clean, carry out polished finish deburring;
S09, inspection: the handware after quality examination polishing, vanning after qualified handware packaging, is put in warehouse.
2. the automobile handware manufacture method of a kind of high tenacity according to claim 1, is characterized in that: described metal comprises one or more in iron, steel and aluminium.
3. the automobile handware manufacture method of a kind of high tenacity according to claim 1, is characterized in that: S02 step also comprises sulfur removal technology.
4. the automobile handware manufacture method of a kind of high tenacity according to claim 1, is characterized in that: described zinc-plated processing step is:
A, degreasing: adopt water-base metal degreased cleaning agent to carry out surface and deoil;
B, pickling: adopt 20% hydrochloric acid and 1 ~ 3g/L hexamethylenetetramine to carry out pickling 9 ~ 15 seconds, temperature is 25 ~ 35 DEG C; Pickling after washing is to neutral, dry;
C, leaching plating assistant agent: the handware obtained by step b puts into NH
4cl and ZnCl
2mixed aqueous solution in, NH
4cl concentration is 18 ~ 22%, ZnCl
2concentration is 2.8 ~ 3.2%, and the temperature of mixed aqueous solution is 60 DEG C, and soak time is 15 ~ 20min, described mixed aqueous solution surface oil sealing; After immersion completes, deoil in handware surface, washing, dry;
D, preparation galvanizing solution: get 100 ~ 110g/LZnCl
2, 300 ~ 350g/LNaOH, 20 ~ 25g/L Seignette salt, 10 ~ 15g/L potassium pyrophosphate mixes in distilled water;
E, zinc-plated process: the handware in step c is put into galvanizing solution, 50 ~ 60 DEG C keep taking out after 30 ~ 40 seconds, flood 50 seconds again, be then washed to neutrality after washing in the concentrated sulfuric acid solution of 30%, dry.
5. the automobile handware manufacture method of a kind of high tenacity according to claim 4, it is characterized in that: the processing step of described chromating is that the handware obtained by step e is put into chromic salt mixing solutions and carried out passivation, the Na containing 85 ~ 90g/L in chromic salt mixing solutions
2cr
2o
7and the sulfuric acid of 2.5mL/L, passivation time is 20 ~ 30min, and passivation temperature is room temperature.
6. the automobile handware manufacture method of a kind of high tenacity according to claim 1, it is characterized in that: described hardening liquid is oil bath, described quenching temperature is 200 ~ 250 DEG C, and the described cool time is 5 ~ 10min.
7. the automobile handware manufacture method of a kind of high tenacity according to claim 1, is characterized in that: the index of described quality examination comprises outward appearance, thickness of coating, hardness, resistance of oxidation and wear resistance.
8. the automobile handware manufacture method of a kind of high tenacity according to claim 4, is characterized in that: the composition of described oil sealing is glycerine.
9. the automobile handware manufacture method of a kind of high tenacity according to claim 4, is characterized in that: also adding in step b has inhibiter.
10. the automobile handware manufacture method of a kind of high tenacity according to claim 1, is characterized in that: the processing step of described nickel plating is:
F, the preparation of nickel plating solution: the brightening agent A getting 30 ~ 40g/L nickelous hypophosphite, 30 ~ 40g/L potassiumphosphate, 5 ~ 8g/L Trisodium Citrate, citric acid 20 ~ 25mL/L, 1 ~ 3mL/L Potassium Iodate, 1 ~ 3mL/L aspartic acid and 1 ~ 3mL/L adds in distilled water, is mixed with nickel plating solution after mixing;
G, Nickel Plating Treatment: the handware after chromating is put into nickel plating solution, 82 ~ 85 DEG C of Nickel Plating Treatment 1 ~ 2min, zinc-plated complete after, take out, be washed to neutrality, dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479631.0A CN105063581A (en) | 2015-08-07 | 2015-08-07 | Method for manufacturing high-tenacity automobile hardware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479631.0A CN105063581A (en) | 2015-08-07 | 2015-08-07 | Method for manufacturing high-tenacity automobile hardware |
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|---|---|
| CN105063581A true CN105063581A (en) | 2015-11-18 |
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|---|---|---|---|
| CN201510479631.0A Pending CN105063581A (en) | 2015-08-07 | 2015-08-07 | Method for manufacturing high-tenacity automobile hardware |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557724A (en) * | 2017-08-11 | 2018-01-09 | 徐州华通浮动油封科技有限公司 | A kind of preparation method for improving float grease seal wearability |
| CN109112507A (en) * | 2018-07-27 | 2019-01-01 | 柳州市横阳机械有限公司 | A kind of wear-resisting hardware preparation method |
| CN110670013A (en) * | 2019-10-14 | 2020-01-10 | 中信戴卡股份有限公司 | Surface treatment method of aluminum alloy hub and aluminum alloy hub |
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| CN201317140Y (en) * | 2008-12-22 | 2009-09-30 | 解勇 | Galvanizing workpiece |
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2015
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| CN101215682A (en) * | 2007-12-29 | 2008-07-09 | 浙江盛达铁塔有限公司 | Non-poaching-water common hot-dip galvanizing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557724A (en) * | 2017-08-11 | 2018-01-09 | 徐州华通浮动油封科技有限公司 | A kind of preparation method for improving float grease seal wearability |
| CN109112507A (en) * | 2018-07-27 | 2019-01-01 | 柳州市横阳机械有限公司 | A kind of wear-resisting hardware preparation method |
| CN110670013A (en) * | 2019-10-14 | 2020-01-10 | 中信戴卡股份有限公司 | Surface treatment method of aluminum alloy hub and aluminum alloy hub |
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Application publication date: 20151118 |