CN1077146A - The casting method of HI-chrome cast iron for grinding balls - Google Patents
The casting method of HI-chrome cast iron for grinding balls Download PDFInfo
- Publication number
- CN1077146A CN1077146A CN 92102416 CN92102416A CN1077146A CN 1077146 A CN1077146 A CN 1077146A CN 92102416 CN92102416 CN 92102416 CN 92102416 A CN92102416 A CN 92102416A CN 1077146 A CN1077146 A CN 1077146A
- Authority
- CN
- China
- Prior art keywords
- abrading
- ball
- cast iron
- foundry goods
- sandbox
- 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.)
- Granted
Links
Landscapes
- Casting Devices For Molds (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention is a kind of casting method of HI-chrome cast iron for grinding balls.Adopt the vacuum full mold casting method to produce abrading-ball, production efficiency is than the equal height of additive method, and plastic foam model reasonable combination can realize that one case cast is more than 100 and even hundreds of abrading-balls.Can carry out the afterheat in casting Quenching Treatment more conveniently.The abrading-ball surface quality that produces with the present invention is good, size accurately, interior solid, hardness be suitable, working condition is good, capital investment is few, last detective is applicable to the production in enormous quantities of the HI-chrome cast iron for grinding balls of various sizes.
Description
The invention belongs to the vacuum full mold casting method of the HI-chrome cast iron for grinding balls of casting technology field.
A kind of in the prior art is the clay-bonded sand mold casting method that adopts hand moulding.Second kind is the permanent mold casting method, and the mill ball quality of Sheng Chaning improves to some extent in this way, but when giving birth in enormous quantities die life low.The abrading-ball of producing with above-mentioned two kinds of methods is difficult to utilize afterheat in casting to carry out cure process.The inner shrinkage cavity defect that easily produces of abrading-ball makes that mill ball quality is relatively poor, product yield is lower, production efficiency is lower, and working condition is also poor.
The purpose of this invention is to provide a kind of vacuum full mold casting method, solve the problem that there is shrinkage cavity defect abrading-ball inside, improve abrading-ball dimensional accuracy, improve abrading-ball product yield, enhance productivity, improve working conditions, and can utilize afterheat in casting that the abrading-ball foundry goods is carried out cure process easily.
The present invention at first presses the abrading-ball design size the plastics abrading-ball model string of foaming and molding dipping coating, dry coating then, again interconnective plastics abrading-ball model group is buried case with the binder free dry sand, after the sealing of sandbox vibration ramming and vacuumizing, cast rich chromium cast iron molten iron under the negative pressure, treat to be cooled to uniform temperature behind the molten steel solidification, from dry sand, hang out abrading-ball foundry goods group again, abrading-ball foundry goods group is carried out cure process.Wherein the thickness with plastics abrading-ball model dipping coating is 0.5-2.0mm, then 35-55 ℃ of oven dry down.Wherein with vacuumizing in the sandbox when reaching certain vacuum degree, pour into a mould 1400-1450 ℃ rich chromium cast iron molten iron again, cast back 5-15 divides and stops to vacuumize.Wherein when abrading-ball foundry goods group is cooled to 1000-950 ℃ in sandbox,, then as requested and ambient conditions, again the foundry goods group is carried out cure process with the special arrangement foundry goods group of slinging rapidly.
The abrading-ball that the present invention makes does not have the internal shrinkage defective, and abrading-ball dimensional accuracy height, surface quality are good, and hardness HRc reaches 50-60, the product yield of abrading-ball can reach more than 80%, utilize afterheat in casting that abrading-ball has been carried out cure process, need not to carry out the special thermal treatment operation, saved the energy.Improved working condition widely.Production is simple with equipment, small investment, instant effect.Production efficiency improves greatly, can only produce the dozens of abrading-ball by every case and can produce hundreds of abrading-balls to every case, has tangible economic benefit and social benefit.
Most preferred embodiment of the present invention:
The manufacturing of foamed plastics spherical model and combined method thereof: be that the aluminium-making mould of 10-15mm is in digester (-tor) or on the forming machine earlier with wall thickness, design the given size foaming and molding monomer or the foam GPPS plastics abrading-ball model of disjunctor according to abrading-ball, require abrading-ball model density≤0.025g/cm
3, its smooth surface does not have obvious pit.By five or several plastics abrading-ball model composition model strings, connect with connecting neck between each plastics abrading-ball model, connect neck and make with foamed plastics, connect the neck size: diameter is (0.5-0.7) R, and length is 10-15mm, and R is the abrading-ball radius.And then dope layer that model string dipping 1.0mm is thick and oven dry under 50 ℃.To flood, dry five or several model strings bond to the model row who constitutes 25 or several plastics abrading-balls under branch's cross gate model.The cross gate model adopts the hollow foamed plastics to make, and it is of a size of: 0.8R * 2R.The cross gate model also floods coating and oven dry.
Bury the case moulding: special can vacuumize at one, above insert bed load in the sandbox of opening, then the model group of being made up of several model strings and several models row is positioned in the sandbox, the cross gate model is placed sandbox top, be granularity that 20/40 dried quartz sand inserts sandbox and constantly impose frequency simultaneously again is that 30-60 hertz (value is 50 hertz), amplitude are for the 0.5-1.5mm(value: 1mm) and vibration acceleration for the 0.5-1.5g(value be: vibration ramming 1.2g).When casting program is concentrated in employing, with the foamed plastics cross gate of a suitable dimension each model is arranged branch's cross gate model and couple together, the down gate of a hollow is set again.When adopting the difference casting program, install the sprue of a hollow on each model horizontal row running channel model, fill up dry sand and vibration ramming then, (value was: 60mm), answer plastic sheeting sealing sandbox on the sand mold surface when sandbox top layer mold thickness was 50-100mm.
Pour into a mould under the negative pressure: the sandbox that will seal is connected with vacuum system, make to vacuumize in the sandbox and reach the 0.05-0.06Mpa vacuum degree, pour into a mould 1420 ℃ high chromium cast iron molten iron again, casting process keeps that vacuum degree for the 0.05-0.06Mpa(value is in the sandbox: 0.055Mpa), pour into a mould and stopped to vacuumize in back 5 minutes.
Utilize afterheat in casting to carry out cure process: when abrading-ball foundry goods temperature in sandbox is reduced to 970 ℃, with specialist tools foundry goods in the sandbox is hung out rapidly simultaneously, carry out the cure process of natural air cooling or air blast cooling or oil quenching cooling as requested, interrupt the connection neck between cast gate and abrading-ball foundry goods at last, promptly produce the dimensional accuracy height with grinder buffing again, the high chromium cast iron abrading-ball that no internal shrinkage defective, product yield height and production efficiency are high.
Claims (4)
1, a kind of vacuum full mold casting method of HI-chrome cast iron for grinding balls, it is characterized in that: at first press the abrading-ball design size the plastics abrading-ball model string of foaming and molding dipping coating, dry coating then, again interconnective plastics abrading-ball model group is buried case with the binder free dry sand, after the sealing of sandbox vibration ramming and vacuumizing, cast rich chromium cast iron molten iron is treated to be cooled to uniform temperature behind the molten steel solidification under the negative pressure, from dry sand, hang out abrading-ball foundry goods group again, abrading-ball foundry goods group is carried out cure process.
2, method according to claim 1 is characterized in that: with the thickness of plastics abrading-ball model dipping coating is 0.5-2.0mm, then 35-55 ℃ of oven dry down.
3, method according to claim 1 is characterized in that: with vacuumizing in the sandbox when reaching certain vacuum degree, pour into a mould 1400-1450 ℃ rich chromium cast iron molten iron again, cast back 5-15 divides and stops to vacuumize.
4, method according to claim 1 is characterized in that: when abrading-ball foundry goods group is cooled to 1000-950 ℃ in sandbox, with the special arrangement foundry goods group of slinging rapidly, then as requested and ambient conditions, again the foundry goods group is carried out cure process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102416 CN1030646C (en) | 1992-04-01 | 1992-04-01 | Casting method of high-chrome cast iron ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102416 CN1030646C (en) | 1992-04-01 | 1992-04-01 | Casting method of high-chrome cast iron ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1077146A true CN1077146A (en) | 1993-10-13 |
| CN1030646C CN1030646C (en) | 1996-01-10 |
Family
ID=4939636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92102416 Expired - Fee Related CN1030646C (en) | 1992-04-01 | 1992-04-01 | Casting method of high-chrome cast iron ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030646C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063992C (en) * | 1997-06-06 | 2001-04-04 | 江西省进贤轻工机械有限公司 | Pressure casting technology for producing high-Cr grinding balls |
| CN100346121C (en) * | 2004-04-26 | 2007-10-31 | 雷波 | crucible for metallic magnesium smelting made of nickel-free heatproof steel |
| CN102319871A (en) * | 2011-09-15 | 2012-01-18 | 王惠臣 | Lost-foam casting high-chromium cast iron residual heat treatment production method |
| CN102641991A (en) * | 2012-05-21 | 2012-08-22 | 南充市高坪区铸钢厂 | Production method of colliding head shell of tramcar buffer and product |
| CN102672101A (en) * | 2012-04-23 | 2012-09-19 | 马鞍山市海天重工科技发展有限公司 | Evanescent mold casting process of large mill hollow sphere |
| CN103464682A (en) * | 2013-07-10 | 2013-12-25 | 马鞍山市海天重工科技发展有限公司 | Preparation method of hollow grinding balls |
| CN104289699A (en) * | 2014-08-18 | 2015-01-21 | 安徽惠明机械制造有限公司 | Rapid water-cooling method for pig iron casting |
| CN106559990A (en) * | 2015-07-24 | 2017-04-05 | 新东工业株式会社 | The manufacturing equipment of iron casting, the manufacture method of iron casting and iron casting |
| CN110066907A (en) * | 2019-02-16 | 2019-07-30 | 王翀 | Lost foam casting high-chromium alloy wearing piece waste heat liquid is quenched processing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110031A1 (en) * | 2007-03-12 | 2008-09-18 | Lichang Wu | A method for manufacturing a tubular injection molded part |
-
1992
- 1992-04-01 CN CN 92102416 patent/CN1030646C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063992C (en) * | 1997-06-06 | 2001-04-04 | 江西省进贤轻工机械有限公司 | Pressure casting technology for producing high-Cr grinding balls |
| CN100346121C (en) * | 2004-04-26 | 2007-10-31 | 雷波 | crucible for metallic magnesium smelting made of nickel-free heatproof steel |
| CN102319871A (en) * | 2011-09-15 | 2012-01-18 | 王惠臣 | Lost-foam casting high-chromium cast iron residual heat treatment production method |
| CN102672101A (en) * | 2012-04-23 | 2012-09-19 | 马鞍山市海天重工科技发展有限公司 | Evanescent mold casting process of large mill hollow sphere |
| CN102641991A (en) * | 2012-05-21 | 2012-08-22 | 南充市高坪区铸钢厂 | Production method of colliding head shell of tramcar buffer and product |
| CN103464682A (en) * | 2013-07-10 | 2013-12-25 | 马鞍山市海天重工科技发展有限公司 | Preparation method of hollow grinding balls |
| CN103464682B (en) * | 2013-07-10 | 2015-11-18 | 马鞍山市海天重工科技发展有限公司 | A kind of preparation method of hollow abrading-ball |
| CN104289699A (en) * | 2014-08-18 | 2015-01-21 | 安徽惠明机械制造有限公司 | Rapid water-cooling method for pig iron casting |
| CN106559990A (en) * | 2015-07-24 | 2017-04-05 | 新东工业株式会社 | The manufacturing equipment of iron casting, the manufacture method of iron casting and iron casting |
| CN110066907A (en) * | 2019-02-16 | 2019-07-30 | 王翀 | Lost foam casting high-chromium alloy wearing piece waste heat liquid is quenched processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030646C (en) | 1996-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1030646C (en) | Casting method of high-chrome cast iron ball | |
| CN101342573A (en) | Vacuum negative pressure real type phenolic sand molding lost foam casting method | |
| CN104128564A (en) | Casting process of sand-lined metal mold cast nodular iron hinge lug | |
| CN104525855B (en) | Metal mold technique based on V method casting inner container of icebox mould strand | |
| CN201922023U (en) | Low-pressure casting mold for aluminum alloy wheel | |
| CN107042284A (en) | A kind of device for sand coated iron mould method for producing steel-casting | |
| CN203459625U (en) | Sand mould structure with integrally-formed screw compressor shell | |
| CN102294461B (en) | Method for producing nodular cast iron automobile differential shell through vacuum (V) casting and V mould | |
| CN1180003A (en) | Casting method for high wear-resisting steel ball | |
| CN1555947A (en) | Sand mould negative pressure gravity casting method | |
| CN210280581U (en) | Casting mold for brake drum | |
| CN206622570U (en) | One kind, which is used for permanent mold casting, forces cooling device | |
| CN107052266B (en) | Casting method of complex thin-wall iron casting | |
| CN210940341U (en) | A mould for producing car lamp decoration | |
| CN1297383C (en) | Method for billow forming magnet alloy thin plate | |
| CN205927000U (en) | Casting tin bar production mould | |
| CN2392626Y (en) | Mould for casting metal ball | |
| CN206484008U (en) | A kind of high property copper alloy running gate system | |
| CN205871010U (en) | Take foaming mould for door of pickup apparatus | |
| CN2267112Y (en) | Multiple row mould for casting steel balls | |
| CN214111268U (en) | Demoulding mechanism of automobile injection mould | |
| CN220661599U (en) | Injection molding destressing back gate shrink-proof structure | |
| CN107671247A (en) | A kind of Flywheel Casting Technology | |
| CN217121669U (en) | Cold iron sand core injection system for end cover casting | |
| CN217095571U (en) | Low-cost technology production processingequipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |