CN114309123B - Trapezoidal oil quenching carbon steel drawing forming process for automobile clutch - Google Patents
Trapezoidal oil quenching carbon steel drawing forming process for automobile clutch Download PDFInfo
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- CN114309123B CN114309123B CN202111407641.5A CN202111407641A CN114309123B CN 114309123 B CN114309123 B CN 114309123B CN 202111407641 A CN202111407641 A CN 202111407641A CN 114309123 B CN114309123 B CN 114309123B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010791 quenching Methods 0.000 title claims abstract description 16
- 230000000171 quenching effect Effects 0.000 title claims abstract description 16
- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 15
- 239000010962 carbon steel Substances 0.000 title claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 56
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000002253 acid Substances 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims description 30
- 206010040844 Skin exfoliation Diseases 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000005554 pickling Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 10
- 238000002484 cyclic voltammetry Methods 0.000 claims description 10
- 239000012153 distilled water Substances 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 239000003115 supporting electrolyte Substances 0.000 claims description 10
- -1 thiol silane organic compound salt Chemical class 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 239000005486 organic electrolyte Substances 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 235000017550 sodium carbonate Nutrition 0.000 claims description 5
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a drawing and forming process of trapezoidal oil quenching carbon steel of an automobile clutch, which comprises the following steps: the preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: c:0.28-0.30%, si:0.25-0.45%, mn:1.25-1.35%, P is less than or equal to 0.015%, S is less than or equal to 0.005%, nb:0.020-0.030%, ti:0.010-0.020%, B:0.0012 to 0.0022 percent, and the balance being iron; removing material stress; husking; acid washing; drawing a coating film; heat treatment is carried out; and carrying out flaw detection treatment, and obtaining the trapezoid oil quenching carbon of the automobile clutch if the trapezoid oil quenching carbon is qualified.
Description
Technical Field
The invention relates to a preparation technology of high-hardness deformed steel, in particular to high-hardness steel for automobile parts, and particularly discloses a drawing forming process of trapezoid oil quenching carbon steel for an automobile clutch.
Background
In an automobile clutch, steel is applied as the structural stability bearing of the clutch, but certain problems exist in the use of the steel in partial occasions, such as the clutch with a circular inner cavity, a bearing rigid block at the present stage is generally in a regular square column shape, the bearing rigid block cannot be tightly attached during setting, the hardness of the bearing steel used at the present stage is lower, the clutch is one of parts frequently used in automobile parts, the bearing steel is damaged and deformed due to low hardness, and the service life of the clutch is influenced.
Therefore, it is necessary to provide a drawing forming process for trapezoidal oil quenched carbon steel of an automobile clutch to solve the above problems.
Disclosure of Invention
The invention aims to provide a drawing forming process of trapezoidal oil quenched carbon steel for an automobile clutch.
The technical proposal is as follows:
a drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch comprises the following steps:
1) The preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: c:0.28-0.30%, si:0.25-0.45%, mn:1.25-1.35%, P is less than or equal to 0.015%, S is less than or equal to 0.005%, nb:0.020-0.030%, ti:0.010-0.020%, B:0.0012 to 0.0022 percent, and the balance being iron;
2) After the raw materials are prepared, placing the raw materials in an outdoor natural environment for 30-35 days, and removing material stress;
3) Carrying out a peeling treatment, wherein the peeling treatment adopts a mechanical peeling mode;
4) Acid washing is carried out;
5) Coating a film;
6) Drawing by using a forming die and drawing equipment to obtain a trapezoid middle-stage material;
7) Heat treatment is carried out;
8) And carrying out flaw detection treatment, and obtaining the trapezoid oil quenching carbon of the automobile clutch if the trapezoid oil quenching carbon is qualified.
Further, step 1) further includes Ceq:0.67-0.77%, mo:0.20-0.40%, nb:0.020-0.030%.
In the step 3), the peeling is to peel off 0.5-1.2 material on the surface of the raw material steel bar.
Further, the step 4) specifically comprises: : adding a corrosion inhibitor into acid liquor with the concentration of free acid of 80-110g/L to form an acid pickling solution, wherein the corrosion inhibitor accounts for 0.05-0.10% of the weight of the acid pickling solution; heating the pickling solution to 60-80 ℃; acid washing is carried out for 25-50s.
Further, the step 5) specifically comprises:
5-1) preparing a coating solution: preparing a base solution by ethanol and distilled water in a volume ratio of 9-8:1-2; adding thiol silane organic compound salt of-SH and-Si (OR) 3 with the concentration of 0.5-10 mmol/L;
5-2) configuring an organic electrolyte solution: is prepared by distilled water, contains 0.1 to 10mmol/L of organic solute and 0.1 to 6mol/L of supporting electrolyte; the thiol organic compound salt containing-SH, and the supporting electrolyte refers to NaOH or Na2CO3;
5-3) coating treatment: the steel bar after acid washing is directly placed into a coating solution or is placed into an electrolyte solution in a three-electrode mode for organic coating.
Furthermore, in the step 5-3), the organic coating adopts a constant current method or a cyclic voltammetry;
constant current method organic coating process conditions:
the current density is 0.5-10 mA/cm < 2 >, the coating time is 5-90 min, and the coating temperature is normal temperature;
cyclic voltammetry organic coating process conditions:
the initial potential is open circuit potential, the end potential is 1.0-8.0V, the cyclic scanning rate is 5-50 mV/s, the cyclic times are 1-10 times, and the coating temperature is normal temperature.
Compared with the prior art, the method can prepare the ultra-high hardness automobile clutch trapezoidal steel with the hardness of 56-60 so as to solve the problems that the service life of the clutch is rapidly influenced due to loss caused by insufficient hardness of bearing steel in the automobile clutch.
Detailed Description
Example 1:
the embodiment shows a drawing and forming process of trapezoidal oil quenching carbon steel of an automobile clutch, which comprises the following steps:
1) The preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: mn:1.25-1.35%, P is less than or equal to 0.015%, S is less than or equal to 0.005%, nb:0.020-0.030%, ti:0.010-0.020%, B:0.0012 to 0.0022 percent, and the balance being iron;
2) After the raw materials are prepared, placing the raw materials in an outdoor natural environment for 30-35 days, and removing material stress;
3) Carrying out a peeling treatment, wherein the peeling treatment adopts a mechanical peeling mode;
4) Acid washing is carried out;
5) Coating a film;
6) Drawing by using a forming die and drawing equipment to obtain a trapezoid middle-stage material;
7) Heat treatment is carried out;
8) And carrying out flaw detection treatment, and obtaining the trapezoid oil quenching carbon of the automobile clutch if the trapezoid oil quenching carbon is qualified.
Step 1) further comprises Ceq:0.67-0.77%, mo:0.20-0.40%, nb:0.020-0.030%.
In the step 3), the shelling is to peel off 0.5-1.2 material on the surface of the raw material steel bar.
The step 4) is specifically as follows: : adding a corrosion inhibitor into acid liquor with the concentration of free acid of 80-110g/L to form an acid pickling solution, wherein the corrosion inhibitor accounts for 0.05-0.10% of the weight of the acid pickling solution; heating the pickling solution to 60-80 ℃; acid washing is carried out for 25-50s.
The step 5) is specifically as follows:
5-1) preparing a coating solution: preparing a base solution by ethanol and distilled water in a volume ratio of 9-8:1-2; adding thiol silane organic compound salt of-SH and-Si (OR) 3 with the concentration of 0.5-10 mmol/L;
5-2) configuring an organic electrolyte solution: is prepared by distilled water, contains 0.1 to 10mmol/L of organic solute and 0.1 to 6mol/L of supporting electrolyte; the thiol organic compound salt containing-SH, and the supporting electrolyte refers to NaOH or Na2CO3;
5-3) coating treatment: the steel bar after acid washing is directly placed into a coating solution or is placed into an electrolyte solution in a three-electrode mode for organic coating.
In the step 5-3), the organic coating adopts a constant current method or a cyclic voltammetry;
constant current method organic coating process conditions:
the current density is 0.5-10 mA/cm < 2 >, the coating time is 5-90 min, and the coating temperature is normal temperature;
cyclic voltammetry organic coating process conditions:
the initial potential is open circuit potential, the end potential is 1.0-8.0V, the cyclic scanning rate is 5-50 mV/s, the cyclic times are 1-10 times, and the coating temperature is normal temperature.
Example 2:
a drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch comprises the following steps:
1) The preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: c:0.28-0.30%, si:0.25-0.45%, mn:1.25 to 1.35 percent, P is less than or equal to 0.015 percent, S is less than or equal to 0.005 percent, and the balance is iron;
2) After the raw materials are prepared, placing the raw materials in an outdoor natural environment for 30-35 days, and removing material stress;
3) Carrying out a peeling treatment, wherein the peeling treatment adopts a mechanical peeling mode;
4) Acid washing is carried out;
5) Coating a film;
6) Drawing by using a forming die and drawing equipment to obtain a trapezoid middle-stage material;
7) Heat treatment is carried out;
8) And carrying out flaw detection treatment, and obtaining the trapezoid oil quenching carbon of the automobile clutch if the trapezoid oil quenching carbon is qualified.
In the step 3), the shelling is to peel off 0.5-1.2 material on the surface of the raw material steel bar.
The step 4) is specifically as follows: : adding a corrosion inhibitor into acid liquor with the concentration of free acid of 80-110g/L to form an acid pickling solution, wherein the corrosion inhibitor accounts for 0.05-0.10% of the weight of the acid pickling solution; heating the pickling solution to 60-80 ℃; acid washing is carried out for 25-50s.
The step 5) is specifically as follows:
5-1) preparing a coating solution: preparing a base solution by ethanol and distilled water in a volume ratio of 9-8:1-2; adding thiol silane organic compound salt of-SH and-Si (OR) 3 with the concentration of 0.5-10 mmol/L;
5-2) configuring an organic electrolyte solution: is prepared by distilled water, contains 0.1 to 10mmol/L of organic solute and 0.1 to 6mol/L of supporting electrolyte; the thiol organic compound salt containing-SH, and the supporting electrolyte refers to NaOH or Na2CO3;
5-3) coating treatment: the steel bar after acid washing is directly placed into a coating solution or is placed into an electrolyte solution in a three-electrode mode for organic coating.
In the step 5-3), the organic coating adopts a constant current method or a cyclic voltammetry;
constant current method organic coating process conditions:
the current density is 0.5-10 mA/cm < 2 >, the coating time is 5-90 min, and the coating temperature is normal temperature;
cyclic voltammetry organic coating process conditions:
the initial potential is open circuit potential, the end potential is 1.0-8.0V, the cyclic scanning rate is 5-50 mV/s, the cyclic times are 1-10 times, and the coating temperature is normal temperature.
Example 3:
a drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch comprises the following steps:
1) The preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: c:0.28-0.30%, si:0.25-0.45%, mn:1.25-1.35%, P is less than or equal to 0.015%, S is less than or equal to 0.005%, nb:0.020-0.030%, ti:0.010-0.020%, B:0.0012 to 0.0022 percent, and the balance being iron;
2) After the raw materials are prepared, placing the raw materials in an outdoor natural environment for 30-35 days, and removing material stress;
3) Carrying out a peeling treatment, wherein the peeling treatment adopts a mechanical peeling mode;
4) Acid washing is carried out;
5) Coating a film;
6) Drawing by using a forming die and drawing equipment to obtain a trapezoid middle-stage material;
7) Heat treatment is carried out;
8) And carrying out flaw detection treatment, and obtaining the trapezoid oil quenching carbon of the automobile clutch if the trapezoid oil quenching carbon is qualified.
Step 1) further comprises Ceq:0.67-0.77%, mo:0.20-0.40%, nb:0.020-0.030%.
In the step 3), the shelling is to peel off 0.5-1.2 material on the surface of the raw material steel bar.
The step 4) is specifically as follows: : adding a corrosion inhibitor into acid liquor with the concentration of free acid of 80-110g/L to form an acid pickling solution, wherein the corrosion inhibitor accounts for 0.05-0.10% of the weight of the acid pickling solution; heating the pickling solution to 60-80 ℃; acid washing is carried out for 25-50s.
The step 5) is specifically as follows:
5-1) preparing a coating solution: preparing a base solution by ethanol and distilled water in a volume ratio of 9-8:1-2; adding thiol silane organic compound salt of-SH and-Si (OR) 3 with the concentration of 0.5-10 mmol/L;
5-2) configuring an organic electrolyte solution: is prepared by distilled water, contains 0.1 to 10mmol/L of organic solute and 0.1 to 6mol/L of supporting electrolyte; the thiol organic compound salt containing-SH, and the supporting electrolyte refers to NaOH or Na2CO3;
5-3) coating treatment: the steel bar after acid washing is directly placed into a coating solution or is placed into an electrolyte solution in a three-electrode mode for organic coating.
In the step 5-3), the organic coating adopts a constant current method or a cyclic voltammetry;
constant current method organic coating process conditions:
the current density is 0.5-10 mA/cm < 2 >, the coating time is 5-90 min, and the coating temperature is normal temperature;
cyclic voltammetry organic coating process conditions:
the initial potential is open circuit potential, the end potential is 1.0-8.0V, the cyclic scanning rate is 5-50 mV/s, the cyclic times are 1-10 times, and the coating temperature is normal temperature.
Compared with the prior art, the method can prepare the ultra-high hardness automobile clutch trapezoidal steel with the hardness of 56-60 so as to solve the problems that the service life of the clutch is rapidly influenced due to loss caused by insufficient hardness of bearing steel in the automobile clutch.
Several variations and modifications can be made without departing from the inventive concept, which fall within the scope of the present invention.
Claims (5)
1. A drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch is characterized by comprising the following steps of:
the method comprises the following steps:
1) The preparation of raw materials: preparing a raw material steel bar, wherein the steel bar comprises the following components in percentage: c:0.28-0.30%, si:0.25-0.45%, mn:1.25-1.35%, P is less than or equal to 0.015%, S is less than or equal to 0.005%, nb:0.020-0.030%, ti:0.010-0.020%, B:0.0012 to 0.0022 percent, and the balance being iron;
2) After the raw materials are prepared, placing the raw materials in an outdoor natural environment for 30-35 days, and removing material stress;
3) Carrying out a peeling treatment, wherein the peeling treatment adopts a mechanical peeling mode;
4) Acid washing is carried out;
5) Coating a film;
6) Drawing by using a forming die and drawing equipment to obtain a trapezoid middle-stage material;
7) Heat treatment is carried out;
8) Performing flaw detection treatment, and obtaining trapezoid oil quenching carbon of the automobile clutch if the flaw detection treatment is qualified;
the step 5) is specifically as follows:
5-1) preparing a coating solution: preparing a base solution by ethanol and distilled water in a volume ratio of 9-8:1-2; adding thiol silane organic compound salt of-SH and-Si (OR) 3 with the concentration of 0.5-10 mmol/L;
5-2) configuring an organic electrolyte solution: is prepared by distilled water, contains 0.1 to 10mmol/L of organic solute and 0.1 to 6mol/L of supporting electrolyte; the thiol organic compound salt containing-SH, and the supporting electrolyte refers to NaOH or Na2CO3;
5-3) coating treatment: the steel bar after acid washing is directly placed into a coating solution or is placed into an electrolyte solution in a three-electrode mode for organic coating.
2. The drawing and forming process of the trapezoidal oil quenched carbon steel of the automobile clutch according to claim 1, wherein the drawing and forming process is characterized in that: step 1) further comprises Ceq:0.67-0.77%, mo:0.20-0.40%, nb:0.020-0.030%.
3. The drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch according to claim 2, wherein the drawing and forming process comprises the following steps: in the step 3), the shelling is to peel off 0.5-1.2 material on the surface of the raw material steel bar.
4. A process for drawing and forming trapezoidal oil quenched carbon steel for automobile clutch according to any one of claims 1 to 3, characterized in that: the step 4) is specifically as follows: adding a corrosion inhibitor into acid liquor with the concentration of free acid of 80-110g/L to form an acid pickling solution, wherein the corrosion inhibitor accounts for 0.05-0.10% of the weight of the acid pickling solution; heating the pickling solution to 60-80 ℃; acid washing is carried out for 25-50s.
5. The drawing and forming process for trapezoidal oil quenched carbon steel of an automobile clutch according to claim 4, wherein the drawing and forming process comprises the following steps: in the step 5-3), the organic coating adopts a constant current method or a cyclic voltammetry;
constant current method organic coating process conditions:
the current density is 0.5-10 mA/cm < 2 >, the coating time is 5-90 min, and the coating temperature is normal temperature;
cyclic voltammetry organic coating process conditions:
the initial potential is open circuit potential, the end potential is 1.0-8.0V, the cyclic scanning rate is 5-50 mV/s, the cyclic times are 1-10 times, and the coating temperature is normal temperature.
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| CN202111407641.5A CN114309123B (en) | 2021-11-24 | 2021-11-24 | Trapezoidal oil quenching carbon steel drawing forming process for automobile clutch |
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| CN114309123B true CN114309123B (en) | 2024-01-23 |
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-
2021
- 2021-11-24 CN CN202111407641.5A patent/CN114309123B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2103111A1 (en) * | 1992-11-16 | 1994-05-17 | Takaaki Minamida | Hot rolled steel wire rod, fine steel wire and twisted steel wire, and manufacture of the fine steel wire |
| CN1152625A (en) * | 1995-09-01 | 1997-06-25 | 住友电气工业株式会社 | Oil tempering steel wire and making method thereof |
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