CN104232867A - Method for producing cold-shock cast iron camshaft by using ethanol-based tellurium powder shock-cooling paint - Google Patents
Method for producing cold-shock cast iron camshaft by using ethanol-based tellurium powder shock-cooling paint Download PDFInfo
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- CN104232867A CN104232867A CN201410435842.XA CN201410435842A CN104232867A CN 104232867 A CN104232867 A CN 104232867A CN 201410435842 A CN201410435842 A CN 201410435842A CN 104232867 A CN104232867 A CN 104232867A
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- tellurium powder
- camshaft
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- ethanol
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Abstract
The invention relates to a method for producing a cold-shock cast iron camshaft by using an ethanol-based tellurium powder shock-cooling paint. The method comprises the following steps: shaping, brushing the paint on the die cavity, closing, casting molten iron, opening the box and cleaning, wherein in the step of brushing the paint on the die cavity, brushing the tellurium powder ethanol-based shock-cooling quick-drying paint with the corresponding thickness in the corresponding part of the die cavity according different chill thicknesses required by different parts of the camshaft (the thickness is 0.2-0.8mm). By adopting the technical steps, the peach-shaped working surface of the camshaft can obtain chills with different and controllable thicknesses.
Description
Technical field
The invention belongs to camshaft casting field, be specifically related to the method adopting ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft.
Background technology
Internal combustion (IC) engine camshaft requires that peach-shaped surface abrasion resistance is high, but standard shaft also must be tough and tensile shock-resistant, all adopt hi-strength nodular iron casting in the past, after processing, intermediate frequency or high-frequency quenching process are carried out to peach-shaped working face, quench-hardened case thickness is limited first, lower hardness is difficult to meet service requirements, quenching easily cracks on the other hand, therefore the new requirement chilled cast iron be designed with is produced, cam peach-shaped working face is the white pig iron that Quench is formed, even require that the chill thickness of the different sites of peach-shaped is different, and want standard shaft portion also must keep gray iron or magnesium iron state, adopt external chill to carry out Quench in the trial production of existing indivedual producers, the not only lower chill trouble of system, and the chill of different thickness will be obtained, technique is also difficult to control.
Summary of the invention
Technical problem to be solved by this invention is exactly when producing camshaft for employing chilled cast iron, the bad control of chill thickness of peach-shaped working face different sites, processing step is unreasonable, unmanageable problem, and provide a kind of simple and method of manageable employing ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft of processing step.
The technical solution used in the present invention: the method adopting ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, its technical process comprises: moulding, die cavity swabbing, mould assembly, pouring molten iron, unpacking, cleaning, die cavity swabbing step is wherein as follows: the different chill thickness required according to camshaft different sites, brush the ethanol based tellurium powder Quench quick drying paint of respective thickness at the corresponding site of die cavity, thickness is 0.2 ~ 0.8mm.
Further, described ethanol based tellurium powder Quench coating by: in tellurium powder, add butyral (PVB) organic flux, wherein butyral organic flux accounts for 3% ~ 5% of tellurium powder, then adds ethanol 40% ~ 45% and make.
The present invention compared with prior art its beneficial effect is: in present invention process step, only to need after moulding on camshaft according to the chill thickness that different sites requires, brush the tellurium powder ethanol based Quench quick drying paint of respective thickness, process operations routinely again, can go out that wear resisting property is high, the tough and tensile impact-resistant camshaft of standard shaft by cast iron; Adopt processing step of the present invention, the peach-shaped working face of camshaft can obtain the chill of different thickness, and easy to control.
Embodiment
embodiment 1
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps: (1) moulding: Double layer iron pattern type preheating 280 DEG C, penetrates resin sand molding respectively; (2) at die cavity brush tellurium powder ethanol based Quench quick drying paint, wherein ethanol based tellurium powder Quench coating is: in tellurium powder, add butyral (PVB) organic flux, wherein butyral organic flux accounts for 3% of tellurium powder, add ethanol 40% again to make: the different chill thickness required according to camshaft different sites, brush the thick tellurium powder ethanol based Quench quick drying paint of 0.2mm in die cavity corresponding position; (3) mould assembly: swage mould assembling up and down; (4) pouring molten iron: molten iron temperature 1430 DEG C; (5) unpack: pouring molten iron was unpacked after 15 minutes; (6) clear up: dead head removed by foundry goods, impeller blasting; Obtained foundry goods.
Embodiment 2
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps: (1) moulding: Double layer iron pattern type preheating 290 DEG C, penetrates resin sand molding respectively; (2) at die cavity brush tellurium powder ethanol based Quench quick drying paint, wherein ethanol based tellurium powder Quench coating is: in tellurium powder, add butyral (PVB) organic flux, wherein butyral organic flux accounts for 4% of tellurium powder, add ethanol 43% again to make: the different chill thickness required according to camshaft different sites, brush the thick tellurium powder ethanol based Quench quick drying paint of 0.6mm in die cavity corresponding position; (3) mould assembly: swage mould assembling up and down; (4) pouring molten iron: molten iron temperature 1450 DEG C; (5) unpack: pouring molten iron was unpacked after 15 minutes; (6) clear up: dead head removed by foundry goods, impeller blasting; Obtained foundry goods.
Embodiment 3
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps: (1) moulding: Double layer iron pattern type preheating 300 DEG C, penetrates resin sand molding respectively; (2) at die cavity brush tellurium powder ethanol based Quench quick drying paint, wherein ethanol based tellurium powder Quench coating is: in tellurium powder, add butyral (PVB) organic flux, wherein butyral organic flux accounts for 5% of tellurium powder, add ethanol 45% again to make: the different chill thickness required according to camshaft different sites, brush the thick tellurium powder ethanol based Quench quick drying paint of 0.8mm in die cavity corresponding position; (3) mould assembly: swage mould assembling up and down; (4) pouring molten iron: molten iron temperature 1460 DEG C; (5) unpack: pouring molten iron was unpacked after 15 minutes; (6) clear up: dead head removed by foundry goods, impeller blasting; Obtained foundry goods.
Claims (2)
1. adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, its technical process comprises: moulding, die cavity swabbing, mould assembly, pouring molten iron, unpacking, cleaning, it is characterized in that: die cavity swabbing step is wherein as follows: the different chill thickness required according to camshaft different sites, thickness is 0.2 ~ 0.8mm, brushes the tellurium powder ethanol based Quench quick drying paint of respective thickness at the corresponding site of die cavity.
2. the method for employing ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft according to claim 1, it is characterized in that: described ethanol based tellurium powder Quench coating by: in tellurium powder, add butyral organic flux, wherein butyral organic flux accounts for 3% ~ 5% of tellurium powder, then adds ethanol 40% ~ 45% and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435842.XA CN104232867A (en) | 2014-09-01 | 2014-09-01 | Method for producing cold-shock cast iron camshaft by using ethanol-based tellurium powder shock-cooling paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435842.XA CN104232867A (en) | 2014-09-01 | 2014-09-01 | Method for producing cold-shock cast iron camshaft by using ethanol-based tellurium powder shock-cooling paint |
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| Publication Number | Publication Date |
|---|---|
| CN104232867A true CN104232867A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410435842.XA Pending CN104232867A (en) | 2014-09-01 | 2014-09-01 | Method for producing cold-shock cast iron camshaft by using ethanol-based tellurium powder shock-cooling paint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985154A (en) * | 2015-06-29 | 2015-10-21 | 安庆市吉安汽车零件锻轧有限公司 | Method for producing camshaft through chilled cast iron |
| CN105598364A (en) * | 2016-02-04 | 2016-05-25 | 溧阳市新力机械铸造有限公司 | Chilling block preparation process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660084A (en) * | 2009-09-28 | 2010-03-03 | 上汽通用五菱汽车股份有限公司 | Engine camshaft chilled cast iron and manufacturing method thereof |
| CN103286257A (en) * | 2013-05-30 | 2013-09-11 | 芜湖永达科技有限公司 | Technological process for treating casting surface |
-
2014
- 2014-09-01 CN CN201410435842.XA patent/CN104232867A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660084A (en) * | 2009-09-28 | 2010-03-03 | 上汽通用五菱汽车股份有限公司 | Engine camshaft chilled cast iron and manufacturing method thereof |
| CN103286257A (en) * | 2013-05-30 | 2013-09-11 | 芜湖永达科技有限公司 | Technological process for treating casting surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985154A (en) * | 2015-06-29 | 2015-10-21 | 安庆市吉安汽车零件锻轧有限公司 | Method for producing camshaft through chilled cast iron |
| CN105598364A (en) * | 2016-02-04 | 2016-05-25 | 溧阳市新力机械铸造有限公司 | Chilling block preparation process |
| CN105598364B (en) * | 2016-02-04 | 2017-11-17 | 溧阳市新力机械铸造有限公司 | A kind of chill manufacture craft |
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Application publication date: 20141224 |