CN104209461A - Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint - Google Patents
Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint Download PDFInfo
- Publication number
- CN104209461A CN104209461A CN201410435843.4A CN201410435843A CN104209461A CN 104209461 A CN104209461 A CN 104209461A CN 201410435843 A CN201410435843 A CN 201410435843A CN 104209461 A CN104209461 A CN 104209461A
- Authority
- CN
- China
- Prior art keywords
- tellurium powder
- chilled
- paint
- camshaft
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention relates to a method for producing a chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint. The method comprises the technological processes of prefoaming of polystyrene beads, curing of the pre-foamed beads, white mold forming, white mold drying, white mold combining, brushing of the ethanol-based tellurium powder chilled paint, drying of the painted white mold, box burying and compacting, casting of molten iron, box discharging and polishing, wherein the step of brushing the paint comprises the following substeps: the ethanol-based tellurium powder chilled paint with different thicknesses is brushed in corresponding positions of the dried and combined white mold according to different thicknesses of clear chill layers requested by different parts of the camshaft; the thicknesses are within 0.2-0.8 mm; and then, evanescent mold casting refractory paint with the thickness of 1-1.3 mm is brushed. The method can realize different thicknesses of the clear chill layers at different parts of a peach-shaped working surface of the camshaft; and meanwhile, the process control is simple, and the production efficiency is high.
Description
Technical field
The invention belongs to lost foam casting field, be specifically related to the method adopting ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft.
Background technology
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 instructions for use, 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 iron that Quench is formed, even require that the chill thickness of the different parts of peach-shaped is different, General Requirements peach tip 7 ~ 9mm, generating circle place requires 3 ~ 4mm, and require that 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 parts, 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 technological process comprises: send out polystyrene bead in advance, by the bead slaking after sending out in advance, white mold forming, Bai Mo is dried, white die combination, brush ethanol based tellurium powder Quench coating, the white mould coating coating is dried, bury case jolt ramming, pouring molten iron, outlet is polished, swabbing step is wherein as follows: drying and the Bai Moshang combined, according to the different chill thickness that camshaft different parts requires, the ethanol based tellurium powder Quench quick drying paint of different-thickness is brushed in the corresponding position of white mould, thickness is 0.2 ~ 0.8mm, and then brush the thick lost foam casting fireproof coating of 1 ~ 1.3mm.
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: 1. the present invention is in lost foam casting process, only need to combine and on the mould of drying, according to the chill thickness that different parts requires, brush the tellurium powder ethanol based Quench quick drying paint of respective thickness, then conventional coating is brushed, process operations routinely again, can cast out that anti-wear performance is high, the tough and tensile impact-resistant camshaft of standard shaft; 2. the present invention can realize the requirement of the different chill thickness of peach-shaped working face different parts of camshaft, and technology controlling and process is simple, and production efficiency is high.
Detailed description of the invention
embodiment 1
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps:
(1) send out polystyrene bead in advance, be 0.4 MPa by the bead of specification EPS in air pressure, vapor (steam) temperature is 85 DEG C, and expansion density is sent out in advance under the condition of 24g/L;
(2) by polystyrene bead slaking, region, slaking storehouse keeps ventilating, 4 hours maturation process time;
(3) white mold forming, by mould and die preheating to 50 DEG C, matched moulds, reinforced, steam pressure remain on 0.4MPa, and time controling is at 50s;
(4) white mould is dried, and is dried by white mould under temperature 50 C condition;
(5) white die combination, is coated with cold glue or PUR bonding by model die joint;
(6) brush Quench coating, ethanol based tellurium powder Quench coating composition is: tellurium powder, adding butyral (PVB) organic flux is 3% of tellurium powder, add ethanol 40%, base circle portion brush one deck, peach point three layers, brush, brush again after front layer is dry, rear layer coating layer thickness is 0.2mm, all the other white mould surface brush lost foam casting fireproof coatings, and coating layer thickness is 1 mm;
(7) dried by the white mould coating coating, temperature controls at 50 DEG C;
(8) bury case jolt ramming, evenly add sand with raining-type sand filling device, in case white moding shape, sand fills up 3 seconds rear jolt ramming time, and sandbox top plastic sheeting seals, and cup is put at cast gate place;
(9) pouring molten iron, HT250 molten iron temperature controls, at 1430 DEG C, to vacuumize during cast in case, negative pressure at-0.05MPa, pressurize 20 minutes;
(10) after cast, insulation is unpacked after 40 minutes again;
(11) form foundry goods after impeller blasting.
embodiment 2
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps:
(1) send out polystyrene bead in advance, be 0.5MPa by the bead of specification EPS in air pressure, vapor (steam) temperature is 90 DEG C, and expansion density is sent out in advance under the condition of 25g/L;
(2) by polystyrene bead slaking, region, slaking storehouse keeps ventilating, 5 hours maturation process time;
(3) white mold forming, by mould and die preheating to 60 DEG C, matched moulds, reinforced, steam pressure remain on 0.5MPa, and time controling is at 60s;
(4) white mould is dried, and is dried by white mould under temperature 53 DEG C of conditions;
(5) white die combination, is coated with cold glue or PUR bonding by model die joint;
(6) brush Quench coating, ethanol based tellurium powder Quench coating composition is: tellurium powder, adding butyral (PVB) organic flux is 4% of tellurium powder, add ethanol 43%, base circle portion brush one deck, peach point three layers, brush, brush again after front layer is dry, rear layer coating layer thickness is 0.6mm, all the other white mould surface brush lost foam casting fireproof coatings, and coating layer thickness is 1.2mm;
(7) dried by the white mould coating coating, temperature controls at 53 DEG C;
(8) bury case jolt ramming, evenly add sand with raining-type sand filling device, in case white moding shape, sand fills up 4 seconds rear jolt ramming time, and sandbox top plastic sheeting seals, and cup is put at cast gate place;
(9) pouring molten iron, HT250 molten iron temperature controls, at 1450 DEG C, to vacuumize during cast in case, negative pressure at-0.06MPa, pressurize 20 minutes;
(10) after cast, insulation is unpacked after 50 minutes again;
(11) form foundry goods after impeller blasting.
embodiment 3
Adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, it comprises the following steps:
(1) send out polystyrene bead in advance, be 0.6MPa by the bead of specification EPS in air pressure, vapor (steam) temperature is 100 DEG C, and expansion density is sent out in advance under the condition of 26g/L;
(2) by polystyrene bead slaking, region, slaking storehouse keeps ventilating, 6 hours maturation process time;
(3) white mold forming, by mould and die preheating to 70 DEG C, matched moulds, reinforced, steam pressure remain on 0.6MPa, and time controling is at 70s;
(4) white mould is dried, and is dried by white mould under temperature 55 DEG C of conditions;
(5) white die combination, is coated with cold glue or PUR bonding by model die joint;
(6) brush Quench coating, ethanol based tellurium powder Quench coating composition is: tellurium powder, adding butyral (PVB) organic flux is 5% of tellurium powder, add ethanol 45%, base circle portion brush one deck, peach point three layers, brush, brush again after front layer is dry, rear layer coating layer thickness is 0.8mm, all the other white mould surface brush lost foam casting fireproof coatings, and coating layer thickness is 1.3mm;
(7) dried by the white mould coating coating, temperature controls at 55 DEG C;
(8) bury case jolt ramming, evenly add sand with raining-type sand filling device, in case white moding shape, sand fills up 5 seconds rear jolt ramming time, and sandbox top plastic sheeting seals, and cup is put at cast gate place;
(9) pouring molten iron, HT250 molten iron temperature controls, at 1460 DEG C, to vacuumize during cast in case, negative pressure at-0.06MPa, pressurize 20 minutes;
(10) after cast, insulation is unpacked after 60 minutes again;
(11) form foundry goods after impeller blasting.
Claims (2)
1. adopt the method for ethanol based tellurium powder Quench coating material production Chilled Cast Iron Camshaft, its technological process comprises: send out polystyrene bead in advance, by the bead slaking after sending out in advance, white mold forming, Bai Mo is dried, white die combination, brush ethanol based tellurium powder Quench coating, the white mould coating coating is dried, bury case jolt ramming, pouring molten iron, outlet is polished, it is characterized in that: swabbing step is wherein as follows: drying and the Bai Moshang combined, according to the different chill thickness that camshaft different parts requires, the ethanol based tellurium powder Quench quick drying paint of different-thickness is brushed in the corresponding position of white mould, thickness is 0.2 ~ 0.8mm, and then brush the thick lost foam casting fireproof coating of 1 ~ 1.3mm.
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 |
|---|---|---|---|
| CN201410435843.4A CN104209461A (en) | 2014-09-01 | 2014-09-01 | Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435843.4A CN104209461A (en) | 2014-09-01 | 2014-09-01 | Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104209461A true CN104209461A (en) | 2014-12-17 |
Family
ID=52091591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410435843.4A Pending CN104209461A (en) | 2014-09-01 | 2014-09-01 | Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104209461A (en) |
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 |
| CN113857425A (en) * | 2021-09-01 | 2021-12-31 | 扬州市瑞晟机械铸造有限公司 | Foam full-mold precision casting process of automobile stamping die |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061423A (en) * | 1990-11-14 | 1992-05-27 | 高化民 | Process for preparation of dry powder of alcoholic paint |
| CN1073958A (en) * | 1991-12-30 | 1993-07-07 | 陕西机械学院 | The trace-element paint that is used for spherulitic iron piece with big cross section |
| US20060225858A1 (en) * | 2005-04-06 | 2006-10-12 | Jiang Foo | Process for making inoculation inserts |
| CN101279355A (en) * | 2008-05-26 | 2008-10-08 | 昆明理工大学 | Duality foundry coating suspending agent |
| CN102717031A (en) * | 2012-07-02 | 2012-10-10 | 山西模范机械制造有限公司 | Large-scale thin-wall valve body lost foam casting process |
| 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 CN201410435843.4A patent/CN104209461A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061423A (en) * | 1990-11-14 | 1992-05-27 | 高化民 | Process for preparation of dry powder of alcoholic paint |
| CN1073958A (en) * | 1991-12-30 | 1993-07-07 | 陕西机械学院 | The trace-element paint that is used for spherulitic iron piece with big cross section |
| US20060225858A1 (en) * | 2005-04-06 | 2006-10-12 | Jiang Foo | Process for making inoculation inserts |
| CN101279355A (en) * | 2008-05-26 | 2008-10-08 | 昆明理工大学 | Duality foundry coating suspending agent |
| CN102717031A (en) * | 2012-07-02 | 2012-10-10 | 山西模范机械制造有限公司 | Large-scale thin-wall valve body lost foam casting process |
| 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 (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 |
| CN113857425A (en) * | 2021-09-01 | 2021-12-31 | 扬州市瑞晟机械铸造有限公司 | Foam full-mold precision casting process of automobile stamping die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103920852B (en) | A kind of precision casting process of large foundry goods | |
| CN106734879B (en) | A kind of lost foam casting moulding process of waste incineration reciprocating grate bar | |
| CN102921902B (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN102240778A (en) | Lost wax shell-based negative pressure dry sand and iron shot chilling vibrational casting process method | |
| CN105618680A (en) | Full mold casting technique for diesel engine cylinder body | |
| CN101934350B (en) | Wet precoated sand | |
| CN104148583A (en) | Investment casting method | |
| CN103143675A (en) | Process for casting ball iron flywheel by iron model sand covering | |
| CN101185963A (en) | Vanishing mould casting technique of blast furnace cooling wall | |
| CN101936417A (en) | Composite faucet valve body | |
| CN107042284A (en) | A kind of device for sand coated iron mould method for producing steel-casting | |
| CN103658534A (en) | Negative-pressure precision casting process of cold-mold protective shell | |
| CN107552725A (en) | A kind of STMMA large scales cavityless casting sheet material evaporative pattern and preparation method thereof | |
| CN105583996A (en) | Pressing process for wax model | |
| CN107650395A (en) | A kind of FD disappearances template material preparation method and its obtained disappearance template material | |
| CN105562600A (en) | White mold production process of evanescent mode | |
| CN104209461A (en) | Method for producing chilled cast iron camshaft by adopting ethanol-based tellurium powder chilled paint | |
| CN104353781A (en) | Lost foam casting process of low-alloy cast steel wheel for port machinery | |
| CN105728651A (en) | Preset inner core integral forming method for evanescent mold for complex workpiece | |
| CA2958811A1 (en) | Casting green sand mold, and method for producing cast article using it | |
| CN104209462A (en) | Method of eliminating carbon residue defect and recarburization defect of lost foam casting | |
| CN104874731A (en) | Method for casting large-scale bucket tooth casting by using lost foam | |
| CN104259385A (en) | Method for manufacturing Chinese pots with precoated sand technology | |
| CN107052244A (en) | A kind of lost-foam casting method of ZG40Mn2 materials | |
| CN104043784A (en) | Overflow valve casting mold and casting technique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141217 |
|
| RJ01 | Rejection of invention patent application after publication |