CN108747209A - A kind of production method of cold forging spanner - Google Patents
A kind of production method of cold forging spanner Download PDFInfo
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- CN108747209A CN108747209A CN201810426595.5A CN201810426595A CN108747209A CN 108747209 A CN108747209 A CN 108747209A CN 201810426595 A CN201810426595 A CN 201810426595A CN 108747209 A CN108747209 A CN 108747209A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of production methods of cold forging spanner, which is characterized in that the method includes the following steps successively：Selection, cold-heading, spheroidizing flatten stub end, phosphorating treatment, forging molding, shaft grinding, finishing, heat treatment, concussion, plating.It is preferable by spanner, surface smoothness made from the cold forging spanner production method；The precision of size is preferable；It will produce processing hardening in process, intensity and hardness can be made to increase；The metallic fiber of spanner can be made to flow to and obtain specific directionality；Linearmaterial rate is up to 83%.
Description
Technical field
The invention belongs to field of machining, specifically, being related to a kind of production method of cold forging spanner.
Background technology
Existing spanner is typically to be made of hot forging method, because of high-temperature operation, to the danger of personnel safety, material safety
Dangerous religion is big；Material easily aoxidizes at high temperature, generates oxide skin, causes surface dirt, finish, flatness poor；Heat
After the completion of forging, forging material has shrinkage phenomenon in temperature-fall period, influences the precision of forging's block dimension；The equipment that high-temperature operation needs
And maintenance cost is higher；And hot forging method is low to the utilization rate of wire rod, is typically only capable to 60% utilization rate.
Invention content
The object of the present invention is to provide a kind of production methods of cold forging spanner.
What the present invention solved is that existing hot forging production method is low to the utilization rate of wire rod, and production cost is high, generates oxidation
The problem of skin, forging's block dimension low precision.
The technical solution adopted in the present invention is：A kind of production method of cold forging spanner, the method include following successively
Step：Selection, cold-heading, spheroidizing, flattening stub end, phosphorating treatment, forging molding, shaft grinding finish, heat treatment,
Concussion, plating.
The cold-heading step is the clapper die spotting press for using pressure to make power as 40T, carries out cold-heading to two end of wire rod, it is big to be separately formed
Head end and small head end, temperature are room temperature, burn close time 2s；In the spheroidizing step, the technological parameter of annealing is, in temperature
Degree is 76030 DEG C, 6~7h is kept the temperature, 580 DEG C is cooled to the furnace, comes out of the stove air-cooled；The flattening stub end step, using tonnage
The hydraulic press of 20T, technological parameter are that temperature is room temperature, and the flattening time is 2s；
The phosphorating treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Phosphatization：For normal temperature phosphating, 15min is impregnated in phosphating solution；
Washing：Twice are washed, the time is each 20s-30s；
Saponification：A concentration of 30-50g soap/L of saponification liquor, saponification liquor temperature are 80-100 DEG C, impregnate 15min；
The forging molding：It is to drive precise cold forging machine using straight, it is 400T, burn close time 4s that pressure, which makes power,；
The shaft grinding：Underhand polish is passed through using 800# abrasive belts using abrasive belt type grinder；
The finishing：It washes mouth, Lame flower open, and removes machined burrs；
The heat treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Quenching：It is 820 DEG C -840 DEG C in temperature, keeps the temperature 4-5h, oil quenching；
After clean：Twice are washed, the time is each 20s-30s；
Tempering:Temperature is 600 DEG C -620 DEG C, keeps the temperature 3-4h, air-cooled；
The concussion step is：In case of shock, about 5min first is rinsed with clear water, adds oxalic acid, it is left that hydrogen peroxide shakes 4h
3min is rinsed in the right side with clear water later；Add oxalic acid and hydrogen peroxide vibrations 3h or so；Then it rushes cylinder and is antirust about 15-20min；
The plating step is oil removing, and -- -- -- -- -- -- -- recycling -- washing -- is blunt for plating for washing for activation for washing for pickling for washing
Change -- drying.
The spanner is opening double offset ring spanner.
The wire rod is 35CrMo.
The advantageous effects of the present invention compared with the existing technology are, by being pulled made from the cold forging spanner production method
Hand, surface smoothness are preferable；The precision of size is preferable；It will produce processing hardening in process（Strain hardening）, can make
Intensity and hardness increase；The metallic fiber of spanner can be made to flow to and obtain specific directionality；Linearmaterial rate is up to 83%.
Description of the drawings
Fig. 1 is flow diagram of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation fall the present invention is further illustrated.
As shown, a kind of production method of cold forging spanner of the present invention, the method at least include the following steps：
Selection, cold-heading, spheroidizing, flattening stub end, phosphorating treatment, forging molding, shaft grinding are finished, are heat-treated, concussion,
Plating.
The cold-heading step is the clapper die spotting press for using pressure to make power as 40T, carries out cold-heading to two end of wire rod, it is big to be separately formed
Head end and small head end, temperature are room temperature, burn close time 2s；In the spheroidizing step, the technological parameter of annealing is, in temperature
Degree is 76030 DEG C, 6~7h is kept the temperature, 580 DEG C is cooled to the furnace, comes out of the stove air-cooled；Hardness is HRB after spheroidizing：75~80；
The flattening stub end step, using the hydraulic press of tonnage 20T, technological parameter is that temperature is room temperature, and the flattening time is 2s；
The phosphorating treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Phosphatization：For normal temperature phosphating, 15min is impregnated in phosphating solution；
Washing：Twice are washed, the time is each 20s-30s；
Saponification：A concentration of 30-50g soap/L of saponification liquor, saponification liquor temperature are 80-100 DEG C, impregnate 15min；
The forging molding：It is to drive precise cold forging machine using straight, it is 400T, burn close time 4s that pressure, which makes power,；
The shaft grinding：Underhand polish is passed through using 800# abrasive belts using abrasive belt type grinder；
The finishing：It washes mouth, Lame flower open, and removes machined burrs；
The heat treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Quenching：It is 820 DEG C -840 DEG C in temperature, keeps the temperature 4-5h, oil quenching；
After clean：Twice are washed, the time is each 20s-30s；
Tempering:Temperature is 600 DEG C -620 DEG C, keeps the temperature 3-4h, air-cooled；
The concussion step is：In case of shock, about 5min first is rinsed with clear water, adds oxalic acid, it is left that hydrogen peroxide shakes 4h
3min is rinsed in the right side with clear water later；Add oxalic acid and hydrogen peroxide vibrations 3h or so；Then it rushes cylinder and is antirust about 15-20min；
After concussion, product surface is more smooth, and electroplating effect is more preferable；
The plating step is oil removing, and -- -- -- -- -- -- -- recycling -- washing -- is blunt for plating for washing for activation for washing for pickling for washing
Change -- drying.
The spanner is opening double offset ring spanner.
The wire rod is 35CrMo.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to restrict the invention, it is all the present invention spirit and
Within principle, made by any modification, equivalent replacement, improvement etc., should all include within protection scope of the present invention.
Claims (4)
1. a kind of production method of cold forging spanner, which is characterized in that the method includes the following steps successively：Selection, cold-heading, ball
Annealing flattens stub end, phosphorating treatment, forging molding, shaft grinding, finishing, heat treatment, concussion, plating.
2. a kind of production method of cold forging spanner according to claim 1, it is characterised in that：The cold-heading step is to use
Pressure makes the clapper die spotting press that power is 40T, carries out cold-heading to two end of wire rod, is separately formed as stub end and small head end, and temperature is room temperature, is closed
The mould time is 2s；In the spheroidizing step, the technological parameter of annealing is, is 760 in temperature30 DEG C, 6~7h is kept the temperature, with
Stove is cooled to 580 DEG C, then comes out of the stove air-cooled；The flattening stub end step, using the hydraulic press of tonnage 20T, technological parameter is,
Temperature is room temperature, and the flattening time is 2s；
The phosphorating treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Phosphatization：For normal temperature phosphating, 15min is impregnated in phosphating solution；
Washing：Twice are washed, the time is each 20s-30s；
Saponification：A concentration of 30-50g soap/L of saponification liquor, saponification liquor temperature are 80-100 DEG C, impregnate 15min；
The forging molding：It is to drive precise cold forging machine using straight, it is 400T, burn close time 4s that pressure, which makes power,；
The shaft grinding：Underhand polish is passed through using 800# abrasive belts using abrasive belt type grinder；
The finishing：It washes mouth, Lame flower open, and removes machined burrs；
The heat treatment includes the following steps successively：
Degreasing：15min is impregnated in faintly acid degreasing agent；
Derusting：10min is impregnated in middle acidic deruster；
Washing：Twice are washed, the time is each 20s-30s；
Quenching：It is 820 DEG C -840 DEG C in temperature, keeps the temperature 4-5h, oil quenching；
After clean：Twice are washed, the time is each 20s-30s；
Tempering:Temperature is 600 DEG C -620 DEG C, keeps the temperature 3-4h, air-cooled；
The concussion step is：In case of shock, about 5min first is rinsed with clear water, adds oxalic acid, it is left that hydrogen peroxide shakes 4h
3min is rinsed in the right side with clear water later；Add oxalic acid and hydrogen peroxide vibrations 3h or so；Then it rushes cylinder and is antirust about 15-20min；
The plating step is oil removing, and -- -- -- -- -- -- -- -- washing -- passivation -- is dried for recycling for plating for washing for activation for washing for pickling for washing
It is dry.
3. a kind of production method of cold forging spanner according to claim 1 or 2, which is characterized in that the spanner is to open
Mouth double offset ring spanner.
4. a kind of production method of cold forging spanner according to claim 3, which is characterized in that the wire rod is
35CrMo。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426595.5A CN108747209A (en) | 2018-05-07 | 2018-05-07 | A kind of production method of cold forging spanner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426595.5A CN108747209A (en) | 2018-05-07 | 2018-05-07 | A kind of production method of cold forging spanner |
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| CN108747209A true CN108747209A (en) | 2018-11-06 |
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| CN201810426595.5A Pending CN108747209A (en) | 2018-05-07 | 2018-05-07 | A kind of production method of cold forging spanner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716079A (en) * | 2020-03-18 | 2020-09-29 | 丽水市久宏精工有限公司 | Thrust rod tail end joint process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530191A (en) * | 2003-03-13 | 2004-09-22 | 谢智庆 | Producing method for improved manual tool |
-
2018
- 2018-05-07 CN CN201810426595.5A patent/CN108747209A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530191A (en) * | 2003-03-13 | 2004-09-22 | 谢智庆 | Producing method for improved manual tool |
Non-Patent Citations (1)
| Title |
|---|
| 洪慎章: "双头呆板手冷模锻工艺", 《模具技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716079A (en) * | 2020-03-18 | 2020-09-29 | 丽水市久宏精工有限公司 | Thrust rod tail end joint process |
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Application publication date: 20181106 |