CN104651707A - Manufacturing method of alloy cast iron piston ring - Google Patents
Manufacturing method of alloy cast iron piston ring Download PDFInfo
- Publication number
- CN104651707A CN104651707A CN201410278855.0A CN201410278855A CN104651707A CN 104651707 A CN104651707 A CN 104651707A CN 201410278855 A CN201410278855 A CN 201410278855A CN 104651707 A CN104651707 A CN 104651707A
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- CN
- China
- Prior art keywords
- piston ring
- cast iron
- blank
- alloy
- manufacturing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a manufacturing method of an alloy cast iron piston ring, relating to the technical field of casting. A cast iron alloy for a piston ring is adopted in the manufacturing method. The manufacturing method comprises the following steps: A. adding the cast iron alloy for the piston ring to a medium-frequency induction furnace according to the weight percentage content to be molten; B. raising the temperature to 1520-1550 DEG C, discharging the molten cast iron alloy and casting the molten cast iron alloy; C. casting by adopting a sand mould at 1380-1440 DEG C; D. cooling a blank to the room temperature, then separating the sand mould from the blank through shakeout, and carrying out shot blasting treatment on the blank; E. carrying out quenching and tempering treatment after roughly turning the blank, then machining the blank to a design size, and carrying out surface nitriding treatment. Compared with the prior art, the manufacturing method has the advantage that the problems of poor wear resistance and high production cost of existing cast iron piston rings can be solved.
Description
Technical field
The present invention relates to casting technology field, especially a kind of for there being the manufacture method of oil lubrication gas compressor cast-iron piston ring.
Background technology
A kind of broad-spectrum motive power machine equipment of compressor, to play sealing cylinder, auxiliary piston reciprocating in cylinder having in oil lubrication engine for piston ring, piston ring in the course of the work, high temperature, high pressure should be born, bear violent wearing and tearing and larger impact load effect again, especially first, second road ring, need to bear very large shock load, working conditions is quite severe, and therefore piston ring must have good wear resistance, higher intensity and enough toughness.But it is even cracked that thin this of the thickness due to piston ring makes the piston ring of traditional gray cast iron material manufacture in use easily fracture.The piston ring material of current industry is except use graphitic cast iron is produced, also have and adopt ductile cast iron material to produce, due to wearing no resistance of spheroidal graphite cast iron, in order to improve the mechanical property of ductile iron piston ring, generally also need to carry out chromium plating process after the piston ring machining that ductile cast iron material is produced completes, and the complex procedures of chrome-plated process, and scrap rate is high, which adds the production cost of ductile iron piston ring.
Summary of the invention
Problem solved by the invention is to provide a kind of manufacture method of cast alloy iron piston ring, to solve the problem that existing cast-iron piston ring wears no resistance and production cost is high.
In order to solve the problem, the technical solution used in the present invention is: the manufacture method of this cast alloy iron piston ring, it adopts a kind of piston ring cast iron alloy, the chemical composition of this piston ring cast iron alloy and mass percentage are C:3.2% ~ 3.5%, Si:2.3% ~ 2.6%, Mn:0.7% ~ 0.9%, Cr:0.2% ~ 0.4%, Mo:0.2% ~ 0.6%, Cu:0.5% ~ 1.0%, Ti: 0.05% ~ 0.15%, P:0.1% ~ 0.30%, S≤0.05%, Cu:0.6% ~ 1%, Mg:0.009% ~ 0.02%, all the other are Fe and inevitable impurity;
Manufacture method comprises the following steps:
A, piston ring cast iron alloy added in medium-frequency induction furnace by mass percentage proportioning and melts;
B, temperature rise to 1520 DEG C ~ 1550 DEG C tapping casting;
C, employing sand mold casting, pouring temperature is 1380 DEG C ~ 1440 DEG C;
After D, blank cool to room temperature, knockout separates sand mold and blank, carries out Shot Blasting to blank;
Carry out modifier treatment after E, rough turn blank, be then machined to size, and carry out the manufacture that namely surfaces nitrided process completes this cast alloy iron piston ring.。
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect: the present invention is by the control to piston ring chemical composition and weight percentage, chemical composition in adjustment piston ring, obtain a kind of special alloy cast iron material, the tensile strength of this cast alloy iron, unit elongation, toughness and fatigue resistance are all higher than common cast alloy iron, also possess the damping of common cast alloy iron simultaneously, thermal conductivity and wear resisting property, particularly this Drawing abillity is far superior to other cast alloy iron, wear resistance and the toughness of the manufacture method of the cast alloy iron piston ring adopting the present invention to obtain are better than ductile iron piston ring, meet the performance need of piston ring.The present invention uses rational production technique, directly surfaces nitrided process is carried out after mechanical workout completes, require no chromium plating process, eradicate the problem that chromeplated product scrap rate is high, greatly reduce the consumption of the energy simultaneously, the manufacture method of every sheet cast alloy iron piston ring decreases 30% than the production cost of ductile iron piston ring, improves production efficiency.
Embodiment
Below in conjunction with example, the invention will be further described:
Embodiment 1:
A manufacture method for cast alloy iron piston ring, it adopts a kind of piston ring cast iron alloy, and the chemical composition of this piston ring cast iron alloy and mass percentage are C:3.2%, Si:2.3%, Mn:0.7%, Cr:0.2%, Mo:0.2%, Cu:0.5%, Ti: 0.05%, P:0.1%, S≤0.05%, Cu:0.6%, Mg:0.009%, all the other are Fe and inevitable impurity;
Manufacture method comprises the following steps:
A, above-mentioned piston ring cast iron alloy to be melted by adding in medium-frequency induction furnace by mass percentage proportioning;
B, temperature rise to 1520 DEG C ~ 1550 DEG C tapping casting;
C, employing sand mold casting, pouring temperature is 1380 DEG C ~ 1440 DEG C;
After D, blank cool to room temperature, knockout separates sand mold and blank, carries out Shot Blasting to blank;
Carry out modifier treatment after E, rough turn blank, be then machined to size, and carry out the manufacture that namely surfaces nitrided process completes this cast alloy iron piston ring.
Embodiment 2:
A manufacture method for cast alloy iron piston ring, it adopts a kind of piston ring cast iron alloy, and the chemical composition of this piston ring cast iron alloy and mass percentage are C:3.3%, Si:2.5%, Mn:0.8%, Cr:0.3%, Mo:0.5%, Cu:0.8%, Ti: 0. 1%, P:0.2%, S≤0.05%, Cu:0.8%, Mg:0.013%, all the other are Fe and inevitable impurity; Other features are identical with embodiment 1.
Embodiment 3:
A manufacture method for cast alloy iron piston ring, it adopts a kind of piston ring cast iron alloy, and the chemical composition of this piston ring cast iron alloy and mass percentage are C:3.5%, Si:2.6%, Mn:0.9%, Cr:0.4%, Mo:0.6%, Cu:1.0%, Ti: 0.15%, P:0.30%, S≤0.05%, Cu:1%, Mg:0.02%, all the other are Fe and inevitable impurity; Other features are identical with embodiment 1.
Claims (1)
1. the manufacture method of a cast alloy iron piston ring, it is characterized in that: adopt a kind of piston ring cast iron alloy, the chemical composition of this piston ring cast iron alloy and mass percentage are: C:3.2% ~ 3.5%, Si:2.3% ~ 2.6%, Mn:0.7% ~ 0.9%, Cr:0.2% ~ 0.4%, Mo:0.2% ~ 0.6%, Cu:0.5% ~ 1.0%, Ti: 0.05% ~ 0.15%, P:0.1% ~ 0.30%, S≤0.05%, Cu:0.6% ~ 1%, Mg:0.009% ~ 0.02%, all the other are Fe and inevitable impurity;
Manufacture method comprises the following steps:
A, piston ring cast iron alloy added in medium-frequency induction furnace by mass percentage proportioning and melts;
B, temperature rise to 1520 DEG C ~ 1550 DEG C tapping casting;
C, employing sand mold casting, pouring temperature is 1380 DEG C ~ 1440 DEG C;
After D, blank cool to room temperature, knockout separates sand mold and blank, carries out Shot Blasting to blank;
Carry out modifier treatment after E, rough turn blank, be then machined to size, and carry out the manufacture that namely surfaces nitrided process completes this cast alloy iron piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278855.0A CN104651707A (en) | 2014-06-21 | 2014-06-21 | Manufacturing method of alloy cast iron piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278855.0A CN104651707A (en) | 2014-06-21 | 2014-06-21 | Manufacturing method of alloy cast iron piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104651707A true CN104651707A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410278855.0A Pending CN104651707A (en) | 2014-06-21 | 2014-06-21 | Manufacturing method of alloy cast iron piston ring |
Country Status (1)
| Country | Link |
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| CN (1) | CN104651707A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463302A (en) * | 2015-11-30 | 2016-04-06 | 宁国市华丰耐磨材料有限公司 | Method for manufacturing high-hardness spheroidal graphite cast iron hammer |
| CN105506256A (en) * | 2015-11-30 | 2016-04-20 | 宁国市华丰耐磨材料有限公司 | Method for preparing high-hardness wear-resistant cast iron hammerhead |
| CN105970078A (en) * | 2016-06-29 | 2016-09-28 | 江苏胜友机械配件制造有限公司 | High-chromium alloy casting ball and manufacturing method thereof |
| CN106299585A (en) * | 2016-08-10 | 2017-01-04 | 深圳市超灵动科技有限公司 | A kind of annular choke coil antenna base manufacture method |
| CN107649846A (en) * | 2017-09-27 | 2018-02-02 | 安徽海立精密铸造有限公司 | A kind of automobile specified novel piston casting technique |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN101319291A (en) * | 2006-12-21 | 2008-12-10 | 通用汽车环球科技运作公司 | Cast irons for high temperature use |
| RU2490335C1 (en) * | 2012-04-17 | 2013-08-20 | Открытое акционерное общество "ГАЗ" (ОАО "ГАЗ") | Method for obtaining bainitic cast iron at heat treatment |
| CN103451510A (en) * | 2013-08-21 | 2013-12-18 | 石家庄金刚凯源动力科技有限公司 | Manufacturing method of vermicular cast iron piston ring |
| US20140161657A1 (en) * | 2012-12-12 | 2014-06-12 | Hyundai Motor Company | Compacted graphite iron, engine cylinder head and vehicle |
-
2014
- 2014-06-21 CN CN201410278855.0A patent/CN104651707A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176315A (en) * | 1996-07-25 | 1998-03-18 | Ae格策有限公司 | Iron casting alloy for producing piston ring of internal-combustion engine |
| CN101319291A (en) * | 2006-12-21 | 2008-12-10 | 通用汽车环球科技运作公司 | Cast irons for high temperature use |
| RU2490335C1 (en) * | 2012-04-17 | 2013-08-20 | Открытое акционерное общество "ГАЗ" (ОАО "ГАЗ") | Method for obtaining bainitic cast iron at heat treatment |
| US20140161657A1 (en) * | 2012-12-12 | 2014-06-12 | Hyundai Motor Company | Compacted graphite iron, engine cylinder head and vehicle |
| CN103451510A (en) * | 2013-08-21 | 2013-12-18 | 石家庄金刚凯源动力科技有限公司 | Manufacturing method of vermicular cast iron piston ring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463302A (en) * | 2015-11-30 | 2016-04-06 | 宁国市华丰耐磨材料有限公司 | Method for manufacturing high-hardness spheroidal graphite cast iron hammer |
| CN105506256A (en) * | 2015-11-30 | 2016-04-20 | 宁国市华丰耐磨材料有限公司 | Method for preparing high-hardness wear-resistant cast iron hammerhead |
| CN105970078A (en) * | 2016-06-29 | 2016-09-28 | 江苏胜友机械配件制造有限公司 | High-chromium alloy casting ball and manufacturing method thereof |
| CN106299585A (en) * | 2016-08-10 | 2017-01-04 | 深圳市超灵动科技有限公司 | A kind of annular choke coil antenna base manufacture method |
| CN107649846A (en) * | 2017-09-27 | 2018-02-02 | 安徽海立精密铸造有限公司 | A kind of automobile specified novel piston casting technique |
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Application publication date: 20150527 |