CN102974729A - Machining method of automobile engine left plate - Google Patents
Machining method of automobile engine left plate Download PDFInfo
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- CN102974729A CN102974729A CN2012102995373A CN201210299537A CN102974729A CN 102974729 A CN102974729 A CN 102974729A CN 2012102995373 A CN2012102995373 A CN 2012102995373A CN 201210299537 A CN201210299537 A CN 201210299537A CN 102974729 A CN102974729 A CN 102974729A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a machining method of an automobile engine left plate. The machining method comprises the following steps: a pouring cylindrical blank, pouring back round ingots, when the round ingots are cooled to 150-200 DEG C in the air, warming and heating the round ingots to 750-800 DEG C at a speed of 50-60 DEG C per hour, preserving the temperature for 3-4 hours, after a furnace is cooled to room temperature, warming and heating the round ingots to 1020-1050 DEG C at a speed of 100-120 DEG C per hour and preserving the temperature for 1-2 hours; b forging; and c heat treatment. The heat treatment comprises the following steps: 1) warming hot forged workpieces to 890 DEG C and normalizing the hot forged workpieces, and tempering normalized workpieces at temperature of 650 DEG C; 2) putting the hot forged workpieces to a punch press to scrap edges; and 3) warming the edge-scraped workpieces to 890 DEG C and treating the edge-scraped workpieces in a quenching mode, and tempering the quenching treat workpieces at temperature of 610 DEG C. The machining method of the automobile engine left plate is beneficial for large-batch industrialized production, reduces appearance of dirt-carrying and un-fully-filled phenomena in the forging process, and therefore product mechanical properties are further improved, product materials are saved, and service life of product molds is prolonged.
Description
Technical field
The present invention relates to a kind of processing method of car engine left plate.
Background technology
The car engine left plate is the vital part on the automobile, because the particularity of its shape and the importance of serviceability thereof, thereby has increased the difficulty of its forging molding, all needs careful consideration in the selection of the distribution of material and technique.For this reason, the reasonable forging method of developing this forging also quite is subjected to domestic and international concern.
At present, the technological process of domestic car engine left plate forging routine is: heating, blocking, finish-forging, side cut, finishing.The shortcoming of this scheme is: need large tonnage pressing machine, energy consumption is large, stock utilization is low, causes the forging cost high.With the forging that technological process was produced of this scheme occur easily folder dirty, be not fully filled etc., the defective percent defective reaches 5%, and raw material availability only has 20-30%, owing to reasons such as overlap are excessive, the life-span of mould is also only about 5000-6000 spare.
Summary of the invention
The processing method that the purpose of this invention is to provide a kind of car engine left plate, make it be beneficial to large batch of industrialized production, and reduced the phenomenon that occurs the folder dirt in the forging process, is not fully filled, the mechanical property of product is further improved, save product materials, improved the die life of product.
The technical solution used in the present invention is as follows:
A kind of processing method of car engine left plate may further comprise the steps:
A, cast cylinder blank step
Chemical component weight percentage is in the cylinder blank: C 0.18-0.23%, Mn 1.2-2.3%, Si 0.4-1.5, V 0.05-0.15%, Ti 0.05-0.2%, Cr 1.2-2.0%, Ni 0.1-0.5%, B 0.15～0.30%, W 0.1-0.8%, Nb 0.02-0.08%, Al 0.15～0.30%, Cu 0.15～0.50%, P≤0.030%, S≤0.030%, surplus are Fe and inevitably are mingled with matter, billet after the casting, air cooling is during to 150-200 ℃, be heated to 750-800 ℃ with 50-60 ℃ of intensification per hour again, be incubated 3-4 hour, after stove is chilled to room temperature, again with per hour 100-120 ℃ be warming up to 1020-1050 ℃, be incubated 1-2 hour;
B, forging step
1), to select diameter be the 80mm round steel, utilizes cutter to carry out blanking, blank length is 223mm after shearing;
2), the blank of step 1) is put into intermediate-frequency heating furnace heating, heating-up temperature 1120-1180 ℃, keep 13.0-13.5min heat time heating time;
3), with step 2) workpiece that obtains puts on the sub-material mould of punch press and carries out sub-material;
4), the workpiece that sub-material is good flattens;
5), the workpiece after will flattening puts on the mould of the press that rubs, and utilizes mould forge hot workpiece; 900 ℃ of temperature, pressure 4000T;
C, heat treatment step
1), will be warmed up to through the workpiece after the forge hot 890 ℃ of normalizings, the workpiece after the normalizing is 650 ℃ of temper;
2), with the workpiece after the forge hot, put into punch press and cut edge;
3), through the workpiece after cut edge processing, be warmed up to 890 ℃ of Quenching Treatment, through temper under 610 ℃ of temperature again after the Quenching Treatment;
D, with the workpiece Shot Blasting behind the hot school;
E, the workpiece after the Shot Blasting is carried out cold school process;
F, the piece packaging that cold school is processed.
The blank of step 1) in the heat treatment step is put into the intermediate-frequency heating furnace heating, and 1150 ℃ of heating-up temperatures keep 13.2min heat time heating time.
Compared with prior art, the inventive method is by heat treatment before forging, forge twice operation of after-baking, tensile strength sigma b (MPa): 〉=580 (110), yield strength σ s (MPa): 〉=470 (95), contraction percentage of area ψ (%): 〉=25, make blank obtain rational distribution, thereby reduced the size of overlap, so that stock utilization has brought up to 70% from original about 30%, improved 40%, because blank reduces, the equipment hitting power also reduces accordingly, the life-span that causes mould is brought up to 9000 from original 5000, improves nearly about one times.After the blank reasonable distribution, because the minimizing of overlap, metal reflow causes the phenomenons such as the sufficient and part of folder dirt and forging part is inabundant to improve.
The specific embodiment
A kind of processing method of car engine left plate may further comprise the steps:
A, cast cylinder blank step
Chemical component weight percentage is in the cylinder blank: C 0.18-0.23%, Mn 1.2-2.3%, Si 0.4-1.5%, V 0.05-0.15%, Ti 0.05-0.2%, Cr 1.2-2.0%, Ni 0.1-0.5%, B 0.15～0.30%, W 0.1-0.8%, Nb 0.02-0.08%, Al 0.15～0.30%, Cu 0.15～0.50%, P≤0.030%, S≤0.030%, surplus are Fe and inevitably are mingled with matter, billet after the casting, air cooling is during to 150-200 ℃, be heated to 750-800 ℃ with 50-60 ℃ of intensification per hour again, be incubated 3-4 hour, after stove is chilled to room temperature, again with per hour 100-120 ℃ be warming up to 1020-1050 ℃, be incubated 1-2 hour;
B, forging step
1), to select diameter be the 80mm round steel, utilizes cutter to carry out blanking, blank length is 223mm after shearing;
2), the blank of step 1) is put into the intermediate-frequency heating furnace heating, 1150 ℃ of heating-up temperatures, maintenance 13.2min heat time heating time;
3), with step 2) workpiece that obtains puts on the sub-material mould of punch press and carries out sub-material;
4), the workpiece that sub-material is good flattens;
5), the workpiece after will flattening puts on the mould of the press that rubs, and utilizes mould forge hot workpiece; 900 ℃ of temperature, pressure 4000T;
C, heat treatment step
1), will be warmed up to through the workpiece after the forge hot 890 ℃ of normalizings, the workpiece after the normalizing is 650 ℃ of temper;
2), with the workpiece after the forge hot, put into punch press and cut edge;
3), through the workpiece after cut edge processing, be warmed up to 890 ℃ of Quenching Treatment, through temper under 610 ℃ of temperature again after the Quenching Treatment;
D, with the workpiece Shot Blasting behind the hot school;
E, the workpiece after the Shot Blasting is carried out cold school process;
F, the piece packaging that cold school is processed.
Claims (2)
1. the processing method of a car engine left plate is characterized in that, may further comprise the steps:
A, cast cylinder blank step
Chemical component weight percentage is in the cylinder blank: C 0.18-0.23%, Mn 1.2-2.3%, Si 0.4-1.5, V 0.05-0.15%, Ti 0.05-0.2%, Cr 1.2-2.0%, Ni 0.1-0.5%, B 0.15～0.30%, W 0.1-0.8%, Nb 0.02-0.08%, Al 0.15～0.30%, Cu 0.15～0.50%, P≤0.030%, S≤0.030%, surplus are Fe and inevitably are mingled with matter, billet after the casting, air cooling is during to 150-200 ℃, be heated to 750-800 ℃ with 50-60 ℃ of intensification per hour again, be incubated 3-4 hour, after stove is chilled to room temperature, again with per hour 100-120 ℃ be warming up to 1020-1050 ℃, be incubated 1-2 hour;
B, forging step
1), to select diameter be the 80mm round steel, utilizes cutter to carry out blanking, blank length is 223mm after shearing;
2), the blank of step 1) is put into intermediate-frequency heating furnace heating, heating-up temperature 1120-1180 ℃, keep 13.0-13.5min heat time heating time;
3), with step 2) workpiece that obtains puts on the sub-material mould of punch press and carries out sub-material;
4), the workpiece that sub-material is good flattens;
5), the workpiece after will flattening puts on the mould of the press that rubs, and utilizes mould forge hot workpiece; 900 ℃ of temperature, pressure 4000T;
C, heat treatment step
1), will be warmed up to through the workpiece after the forge hot 890 ℃ of normalizings, the workpiece after the normalizing is 650 ℃ of temper;
2), with the workpiece after the forge hot, put into punch press and cut edge;
3), through the workpiece after cut edge processing, be warmed up to 890 ℃ of Quenching Treatment, through temper under 610 ℃ of temperature again after the Quenching Treatment;
D, with the workpiece Shot Blasting behind the hot school;
E, the workpiece after the Shot Blasting is carried out cold school process;
F, the piece packaging that cold school is processed.
2. the processing method of car engine left plate according to claim 1 is characterized in that: the blank of step 1) in the heat treatment step is put into the intermediate-frequency heating furnace heating, 1150 ℃ of heating-up temperatures, maintenance 13.2min heat time heating time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102995373A CN102974729A (en) | 2012-08-22 | 2012-08-22 | Machining method of automobile engine left plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102995373A CN102974729A (en) | 2012-08-22 | 2012-08-22 | Machining method of automobile engine left plate |
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| CN102974729A true CN102974729A (en) | 2013-03-20 |
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| CN2012102995373A Pending CN102974729A (en) | 2012-08-22 | 2012-08-22 | Machining method of automobile engine left plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740914A (en) * | 2013-10-28 | 2014-04-23 | 张家港海锅重型锻件有限公司 | Production process of 410 steel forge piece for deep-sea oil production equipment |
| CN105562572A (en) * | 2015-12-28 | 2016-05-11 | 合肥中澜新材料科技有限公司 | Forging method for shifting fork used for lathe |
| CN105855440A (en) * | 2016-04-21 | 2016-08-17 | 昌利锻造有限公司 | Machining method of shifting fork |
| CN107350727A (en) * | 2016-05-09 | 2017-11-17 | 南京晨伟机械设备制造有限公司 | A kind of processing technology of high intensity plunger pump pipe clamp |
| CN110394602A (en) * | 2019-07-29 | 2019-11-01 | 新昌县凯杰机械有限公司 | A kind of manufacturing process of the reinforcing plate structure of hydraulic car |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117684A (en) * | 2007-08-22 | 2008-02-06 | 江苏沙钢集团淮钢特钢有限公司 | Micro-alloying high-strength fork steel |
| CN102444573A (en) * | 2010-10-11 | 2012-05-09 | 上海腾辉锻造有限公司 | Manufacturing method of forging pump shaft |
| CN102489965A (en) * | 2011-12-15 | 2012-06-13 | 昆山恒源机械制造有限公司 | Machining method for plate-covering machine for VVT (variable valve timing) system of automobile engine |
-
2012
- 2012-08-22 CN CN2012102995373A patent/CN102974729A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117684A (en) * | 2007-08-22 | 2008-02-06 | 江苏沙钢集团淮钢特钢有限公司 | Micro-alloying high-strength fork steel |
| CN102444573A (en) * | 2010-10-11 | 2012-05-09 | 上海腾辉锻造有限公司 | Manufacturing method of forging pump shaft |
| CN102489965A (en) * | 2011-12-15 | 2012-06-13 | 昆山恒源机械制造有限公司 | Machining method for plate-covering machine for VVT (variable valve timing) system of automobile engine |
Non-Patent Citations (1)
| Title |
|---|
| 吕炎: "《锻造工艺学》", 31 May 1995, article "锻造的热规范", pages: 11-21 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740914A (en) * | 2013-10-28 | 2014-04-23 | 张家港海锅重型锻件有限公司 | Production process of 410 steel forge piece for deep-sea oil production equipment |
| CN105562572A (en) * | 2015-12-28 | 2016-05-11 | 合肥中澜新材料科技有限公司 | Forging method for shifting fork used for lathe |
| CN105855440A (en) * | 2016-04-21 | 2016-08-17 | 昌利锻造有限公司 | Machining method of shifting fork |
| CN107350727A (en) * | 2016-05-09 | 2017-11-17 | 南京晨伟机械设备制造有限公司 | A kind of processing technology of high intensity plunger pump pipe clamp |
| CN110394602A (en) * | 2019-07-29 | 2019-11-01 | 新昌县凯杰机械有限公司 | A kind of manufacturing process of the reinforcing plate structure of hydraulic car |
| CN110394602B (en) * | 2019-07-29 | 2020-08-28 | 新昌县凯杰机械有限公司 | Manufacturing process of rib plate structure of hydraulic vehicle |
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Application publication date: 20130320 |
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