CN109957647A - A kind of processing technology of automobile-used iron chains pin - Google Patents
A kind of processing technology of automobile-used iron chains pin Download PDFInfo
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- CN109957647A CN109957647A CN201910286739.6A CN201910286739A CN109957647A CN 109957647 A CN109957647 A CN 109957647A CN 201910286739 A CN201910286739 A CN 201910286739A CN 109957647 A CN109957647 A CN 109957647A
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- China
- Prior art keywords
- automobile
- iron chains
- used iron
- chains pin
- treatment
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a kind of processing technologys of automobile-used iron chains pin, belong to iron chains pin processing technique field.The processing technology includes the following steps: pre-treatment: then the steel alloy elder generation heating in medium frequency of automobile-used iron chains pin is successively made annealing treatment, phosphorus saponification process；Molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；Heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, then dip-coating or spraying in black Dacroment masking liquid, through 110-120 DEG C of baking 5-10min, solidify to obtain automobile-used iron chains pin finished product.The all higher automobile-used iron chains pin of the mechanical performances such as the available hardness of processing technology of the invention, intensity, while guaranteeing the precision of automobile-used iron chains pin, and substantially increase production efficiency, the utilization rate of material is up to 95% or more.
Description
Technical field
The present invention relates to a kind of processing technologys of automobile-used iron chains pin, belong to iron chains pin processing technique field.
Background technique
Pin shaft connection structure is most common a kind of force transferring structure in engineering, for example, to meet the needs of seperated transport, greatly
The boom and turntable of tonnage caterpiller crane are all made of pin shaft connection, for another example automobile-used iron chains pin between pole and turntable.It is right
For automobile-used iron chains pin, the structure size of iron chains pin is larger and the influence of stress also larger especially drawing force, and iron
Chain pin is easily scraped by external force, is touched, therefore, required intensity, corrosion resistance will be relatively good outside being exposed to.And the prior art
In iron chains pin be substantially with steel alloy by machining be made, all need to be improved in intensity, wearability, precision.
Summary of the invention
The present invention provides a kind of good mechanical property for defect present in the prior art, high automobile-used of stock utilization
The precision of the processing technology of iron chains pin, the automobile-used iron chains pin processed is high.
Above-mentioned purpose of the invention can be carried out by the following technical programs: a kind of processing work of automobile-used iron chains pin
Skill, the processing technology include the following steps:
S1, pre-treatment: then the steel alloy elder generation heating in medium frequency of automobile-used iron chains pin is successively made annealing treatment, phospholeum
Processing；
S2, molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；
S3, heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, then in black Dacroment masking liquid dip-coating or
Spraying, through 110-120 DEG C of baking 5-10min, solidifies to obtain automobile-used iron chains pin finished product.
In the processing technology of above-mentioned automobile-used iron chains pin, the temperature of the heating in medium frequency is 800-820 DEG C, and frequency is
15-25s。
In the processing technology of above-mentioned automobile-used iron chains pin, the temperature of the annealing is 740-760 DEG C, keeps the temperature 2-4h,
330 DEG C or less are cooled to the furnace to come out of the stove.
In the processing technology of above-mentioned automobile-used iron chains pin, the phosphorus saponification process is pickling 2-5min at 50-60 DEG C, clear water
2-3min is washed, phosphatization 8-15min at 65-75 DEG C, clear water washes 2-3min, is saponified 5-15min at 50-65 DEG C.
In the processing technology of above-mentioned automobile-used iron chains pin, the pressure of cold-forge forming is 350-380T, burn close time 5-
10s。
In the processing technology of above-mentioned automobile-used iron chains pin, the heat treatment includes quenching treatment and tempering.
In the processing technology of above-mentioned automobile-used iron chains pin, the temperature of the quenching treatment is 850-880 DEG C, and soaking time is
2-3h, oil quenching, the temperature of tempering are 480-520 DEG C, soaking time 1-3h, air-cooled.
It further include Seal treatment after the solidification of black the dacroment process in the processing technology of above-mentioned automobile-used iron chains pin, closing
Processing carries out in silicate water paint, and the temperature of Seal treatment is 320-330 DEG C, time 2-3min.
The black Dacroment applied in patent before black Dacroment masking liquid used in the present invention is our company
Masking liquid specifically includes following component (counting by weight): 50 parts of epoxy resin；20-40 parts of black pigments；50-60 parts of zinc powders；
0.1-0.5 parts of dispersing agents；0.5-3 parts of alcoholic solvents；2-10 parts of chromic acid solutions；40-100 parts of organic solvents.
Preferably, black pigment described in black Dacroment masking liquid is one of graphite, active carbon, carbon black or more
Kind.
Preferably, dispersing agent described in black Dacroment masking liquid is Dodecyl Polyoxyethylene Ether, tetradecyl alchohol polyoxy second
One of alkene ether, hexadecanol polyoxyethylene ether are a variety of.
Preferably, organic solvent described in black Dacroment masking liquid is one of benzene,toluene,xylene or more
Kind.
Preferably, alcoholic solvent described in black Dacroment masking liquid is one of propyl alcohol, isopropanol, n-butanol or more
Kind.
Black dacromet paint in the prior art typically contains aluminium powder, and the Dacromet/steel appearance color containing aluminium powder is white
It is bright, when black pigment is added, increase the difficulty of black mask, to make coating must be added to more pigment in black, to increase
Add evenly dispersed difficulty, and large effect coating performance.Aluminium powder is free of in black dacromet paint of the present invention, and piece is only added
Shape zinc powder reduces the whiteness and brightness of coating, reduces the difficulty of black mask, improves blackness.
Compared with prior art, the present invention first does heating in medium frequency to steel alloy, is then made annealing treatment, at phospholeum
Reason then uses cold-forge forming, and then just carries out including at the heat of quenching treatment and tempering to the semi-finished product after cold forging
Reason, and cooperate specific black the dacroment process, the mechanical performances such as hardness, the intensity of automobile-used iron chains pin are further increased, simultaneously
Guarantee the precision of automobile-used iron chains pin, and substantially increase production efficiency, the utilization rate of material is up to 95% or more.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
The steel alloy of heretofore described automobile-used iron chains pin can be various high rigidity, high-intensitive and Buddha's warrior attendant, such as
42CrMo steel, is also possible to the steel alloy optimized on the basis of 42CrMo, in the embodiment of the present invention just by taking 42CrMo steel as an example.
Embodiment 1
Pre-treatment: the steel alloy of automobile-used iron chains pin is first subjected to heating in medium frequency under 810 DEG C, the frequency condition of 20s, then
It is successively made annealing treatment, phosphorus saponification process；The temperature of annealing is 750 DEG C, keeps the temperature 3h, cools to 330 DEG C or less with the furnace
It comes out of the stove；The phosphorus saponification process is pickling 3min at 55 DEG C, and clear water washes 2min, phosphatization 10min at 70 DEG C, and clear water washes 2min, 60
10min is saponified at DEG C.
S2, molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；Cold forging
Molding pressure is 360T, burn close time 8s.
S3, heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, and heat treatment includes at quenching treatment and tempering
Reason, the temperature of the quenching treatment are 860 DEG C, soaking time 2h, and oil quenching, the temperature of tempering is 500 DEG C, soaking time
It is air-cooled for 2h；Then dip-coating or spraying in black Dacroment masking liquid, through 115 DEG C of baking 8min, then in the aqueous painting of silicate
Seal treatment is carried out in material, the temperature of Seal treatment is 355 DEG C, and the time is that 6min obtains automobile-used iron chains pin finished product.Wherein, described black
Color Dacroment masking liquid includes following component (counting by weight): 50 parts of epoxy resin；15 parts of graphite, 15 parts of active carbons；55 parts
Zinc powder；0.3 part of Dodecyl Polyoxyethylene Ether；2 parts of propanol solvents；6 parts of chromic acid solutions；60 parts of toluene solvants.
Embodiment 2
Pre-treatment: the steel alloy of automobile-used iron chains pin is first subjected to heating in medium frequency under 820 DEG C, the frequency condition of 15s, then
It is successively made annealing treatment, phosphorus saponification process；The temperature of annealing is 760 DEG C, keeps the temperature 2h, cools to 330 DEG C or less with the furnace
It comes out of the stove；The phosphorus saponification process is pickling 2min at 60 DEG C, and clear water washes 2min, phosphatization 8min at 75 DEG C, and clear water washes 2min, 65 DEG C
Lower saponification 5min.
S2, molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；Cold forging
Molding pressure is 380T, burn close time 5s.
S3, heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, and heat treatment includes at quenching treatment and tempering
Reason, the temperature of the quenching treatment are 880 DEG C, soaking time 2h, and oil quenching, the temperature of tempering is 520 DEG C, soaking time
It is air-cooled for 1h；Then dip-coating or spraying in black Dacroment masking liquid, through 120 DEG C of baking 5min, then in the aqueous painting of silicate
Seal treatment is carried out in material, the temperature of Seal treatment is 355 DEG C, and the time is that 6min obtains automobile-used iron chains pin finished product.Wherein, described black
Color Dacroment masking liquid includes following component (counting by weight): 50 parts of epoxy resin；35 parts of carbon blacks；53 parts of zinc powders；0.4 part ten
Tetrol polyoxyethylene ether；1 part of isopropanol solvent；4 parts of chromic acid solutions；80 parts of benzene solvents.
Embodiment 3
Pre-treatment: the steel alloy of automobile-used iron chains pin is first subjected to heating in medium frequency under 800 DEG C, the frequency condition of 25s, then
It is successively made annealing treatment, phosphorus saponification process；The temperature of annealing is 740 DEG C, keeps the temperature 4h, cools to 330 DEG C or less with the furnace
It comes out of the stove；The phosphorus saponification process is pickling 5min at 50 DEG C, and clear water washes 3min, phosphatization 15min at 65 DEG C, and clear water washes 3min, 50
15min is saponified at DEG C.
S2, molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；Cold forging
Molding pressure is 350T, burn close time 10s.
S3, heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, and heat treatment includes at quenching treatment and tempering
Reason, the temperature of the quenching treatment are 850 DEG C, soaking time 3h, and oil quenching, the temperature of tempering is 480 DEG C, soaking time
It is air-cooled for 3h；Then dip-coating or spraying in black Dacroment masking liquid, it is then aqueous in silicate through 110 DEG C of baking 10min
Seal treatment is carried out in coating, the temperature of Seal treatment is 350 DEG C, and the time is that 4min obtains automobile-used iron chains pin finished product.Wherein, described
Black Dacroment masking liquid includes following component (counting by weight): 50 parts of epoxy resin；20 parts of active carbons；60 parts of zinc powders；0.1
Part hexadecanol polyoxyethylene ether；3 parts of n-butanol solvents；2 parts of chromic acid solutions；100 parts of xylene solvents.
Comparative example 1
It is only that the comparative example does not carry out heating in medium frequency with the difference of embodiment 1.
Comparative example 2
It is only that the comparative example using hot-forging forming with the difference of embodiment 1.
Comparative example 3 and the difference of embodiment 1 are only that the comparative example is only to be heat-treated, not using in black Dacroment masking liquid
Dip-coating or spraying.
Tensile strength sigma b, tensile strength σ are carried out to the automobile-used iron chains pin processed in embodiment 1-3 and comparative example 1-3
S, the detection of hardness HRC, stock utilization, testing result are as shown in table 1:
Table 1: the performance test results for the automobile-used iron chains pin processed in embodiment 1-3 and comparative example 1-3
The present invention first does heating in medium frequency to steel alloy, is then made annealing treatment, phosphorus saponification process, then using cold forging at
Type, and then just to the semi-finished product after cold forging carry out include quenching treatment and tempering heat treatment, and cooperate specific black
Color the dacroment process further increases the mechanical performances such as hardness, the intensity of automobile-used iron chains pin, while guaranteeing the essence of automobile-used iron chains pin
Density, and production efficiency is substantially increased, the utilization rate of material is up to 95% or more.
The above examples are only used to illustrate the technical scheme of the present invention rather than limiting the scope of the invention, although ginseng
The present invention is explained in detail according to preferred embodiment, those skilled in the art should understand that, it can be to of the invention
Technical solution is modified or replaced equivalently, without departing from the spirit and scope of technical solution of the present invention.
Claims (8)
1. a kind of processing technology of automobile-used iron chains pin, which is characterized in that the processing technology includes the following steps:
S1, pre-treatment: then the steel alloy elder generation heating in medium frequency of automobile-used iron chains pin is successively made annealing treatment, phosphorus saponification process；
S2, molding: the steel alloy cold-forge forming of the automobile-used iron chains pin through pre-treatment is obtained into automobile-used iron chains pin semi-finished product；
S3, heat treatment: automobile-used iron chains pin semi-finished product are first heat-treated, then dip-coating or spray in black Dacroment masking liquid
It applies, through 110-120 DEG C of baking 5-10min, solidifies to obtain automobile-used iron chains pin finished product.
2. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that the temperature of the heating in medium frequency
It is 800-820 DEG C, frequency 15-25s.
3. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that the temperature of the annealing is
740-760 DEG C, 2-4h is kept the temperature, 330 DEG C or less is cooled to the furnace and comes out of the stove.
4. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that the phosphorus saponification process is 50-
Pickling 2-5min at 60 DEG C, clear water wash 2-3min, and phosphatization 8-15min at 65-75 DEG C, clear water washes 2-3min, are saponified at 50-65 DEG C
5-15min。
5. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that the pressure of cold-forge forming is 350-
380T, burn close time 5-10s.
6. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that the heat treatment includes quenching
Processing and tempering.
7. the processing technology of automobile-used iron chains pin according to claim 6, which is characterized in that the temperature of the quenching treatment is
850-880 DEG C, soaking time 2-3h, oil quenching, the temperature of tempering is 480-520 DEG C, soaking time 1-3h, air-cooled.
8. the processing technology of automobile-used iron chains pin according to claim 1, which is characterized in that after the solidification of black the dacroment process
It further include Seal treatment, Seal treatment carries out in silicate water paint, and the temperature of Seal treatment is 320-330 DEG C, the time
For 2-3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286739.6A CN109957647A (en) | 2019-04-10 | 2019-04-10 | A kind of processing technology of automobile-used iron chains pin |
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|---|---|---|---|
| CN201910286739.6A CN109957647A (en) | 2019-04-10 | 2019-04-10 | A kind of processing technology of automobile-used iron chains pin |
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| CN109957647A true CN109957647A (en) | 2019-07-02 |
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ID=67025964
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102108477A (en) * | 2011-03-11 | 2011-06-29 | 常州腾龙精密铝业有限公司 | Heat treatment method of aluminum material |
| CN102773399A (en) * | 2012-07-12 | 2012-11-14 | 海盐三马标准件有限公司 | Machining process of engineering machinery crawler belt nut |
| CN103146894A (en) * | 2013-03-11 | 2013-06-12 | 首钢贵阳特殊钢有限责任公司 | Induction annealing process of 95CrMo steel for rock drilling rod |
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| CN103659175A (en) * | 2012-09-25 | 2014-03-26 | 上海电装燃油喷射有限公司 | Forging method for preventing cracks of plunger bushing in diesel engine fuel oil injection pump |
| CN105063514A (en) * | 2015-09-07 | 2015-11-18 | 宁波瑞国精机工业有限公司 | Iron chain pin for vehicles and processing method thereof |
| CN108838631A (en) * | 2018-08-24 | 2018-11-20 | 森冈精机（南通）有限公司 | A kind of steering system ball stud and its production technology |
| CN109500130A (en) * | 2019-01-22 | 2019-03-22 | 德新钢管（中国）有限公司 | A kind of manufacturing method of the long-tube trailer seamless steel pipe for gas cylinder of 920 ㎜ of diameter |
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2019
- 2019-04-10 CN CN201910286739.6A patent/CN109957647A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121849A (en) * | 1994-10-25 | 1996-05-08 | 江苏森威集团股份有限公司 | Precision forging process for outer sleeve blank of constant velocity universal joint of automobile |
| CN101579800A (en) * | 2009-06-12 | 2009-11-18 | 大丰市中德精锻件有限公司 | Warm and cold forging process for precision forging piece of integrated long-shaft inner ball cage |
| CN102108477A (en) * | 2011-03-11 | 2011-06-29 | 常州腾龙精密铝业有限公司 | Heat treatment method of aluminum material |
| CN102773399A (en) * | 2012-07-12 | 2012-11-14 | 海盐三马标准件有限公司 | Machining process of engineering machinery crawler belt nut |
| CN103659175A (en) * | 2012-09-25 | 2014-03-26 | 上海电装燃油喷射有限公司 | Forging method for preventing cracks of plunger bushing in diesel engine fuel oil injection pump |
| CN203112895U (en) * | 2012-12-28 | 2013-08-07 | 西安奥邦科技有限责任公司 | Monitoring system of medium frequency heating and annealing PLC (Programmable Logic Controller) control upper computer of metal tube |
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| CN109500130A (en) * | 2019-01-22 | 2019-03-22 | 德新钢管（中国）有限公司 | A kind of manufacturing method of the long-tube trailer seamless steel pipe for gas cylinder of 920 ㎜ of diameter |
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Application publication date: 20190702 |