CN104107894A - Pump body pressure casting method - Google Patents
Pump body pressure casting method Download PDFInfo
- Publication number
- CN104107894A CN104107894A CN201410324279.9A CN201410324279A CN104107894A CN 104107894 A CN104107894 A CN 104107894A CN 201410324279 A CN201410324279 A CN 201410324279A CN 104107894 A CN104107894 A CN 104107894A
- Authority
- CN
- China
- Prior art keywords
- die cavity
- mold
- pump housing
- pump body
- filled
- 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
Abstract
The invention provides a pump body pressure casting method. The pump body comprises the following steps of installing, wherein a pump body pressure casting mold is installed, preheated and coated; combining, wherein a fixed mold and a movable mold are combined to form a mold cavity, and the fixed mold and the movable mold are locked; vacuumizing, wherein air in the mold cavity is exhausted, so that a vacuum state is formed in the mold cavity; mold filling, wherein pressure is exerted, so that molten metal is filled into the mold cavity through extrusion of an extrusion opening; extruding, wherein in the condensation stage of the molten metal, an extrusion bar is inserted from the extrusion opening in the fixed mold and extrudes the interior of the molten metal to form a shrinkage compensating hole; demolding, wherein after the molten metal is hardened to form a pump body finished product, the fixed mold and the movable mold are separated. Because the mold cavity is in the vacuum state, bubbles are effectively prevented from being formed in the pump body formed through pressure casting, and the quality of the pump body is improved; different pressures are exerted in different time periods so that the molten metal is filled into the mold cavity, and therefore the formed pump body is high in hardness, strength and tensile strength.
Description
Technical field
the present invention relates to a kind of casting technique of the pump housing, particularly a kind of pump housing pressure casting method.
Background technology
?traditional metallic article casting die generally includes following steps: matched moulds (keep movable mold to contact with fixed die, make to form the die cavity of molded metallic article); Locked mode (mold halves is locked); Type (motlten metal is injected to die cavity, motlten metal is filled in die cavity) is filled in die casting; The parting of unblanking while being hardened into metallic article (be filled in motlten metal in cavity, separate activities mould and fixed die); Eject (liftout plate on the rear surface of movable mold approaches movable mold, so that metallic article is ejected from movable mold by the knock pin that is fixed to liftout plate); Reset.
Such scheme has following shortcoming: one, in the time that motlten metal is injected in cavity, when being present in gas (air obtaining by thermal decomposition releasing agent or gas) in cavity or being injected into that gas in cavity is not discharged to outside but while mixing with motlten metal with motlten metal, in metallic article, produce incomplete filling defect (such as porous and pin-and-hole), make the intensity variation of metallic article, and in the situation that metallic article is soldered to another goods, make welding quality variation; Two, existing die casting drilling adopts the mode of loosing core conventionally, and because inside die-casting part exists air-tightness defect, the density of die casting is lower, finally affects hole strength.
Summary of the invention
?the invention provides a kind of pump housing pressure casting method, it comprises the following steps:
Install: pump housing compression mod is installed, described pump housing compression mod is carried out to preheating coating;
Combination: combination cover half and dynamic model also forms die cavity, locking cover half and dynamic model;
Vacuumize: the air in described die cavity is extracted out, made formation vacuum state in described die cavity;
Fill type: exert pressure molten metal bath is pushed and is filled with in described die cavity by extrusion mouth;
Extruding: in the condensation phase of motlten metal, the extrusion mouth from fixed mould inserts extruded rod, extruded rod overstocks and forms feeding hole in molten metal;
The demoulding: after melting metallic hardization forms pump housing goods, separate cover half and dynamic model.
Preferably, described cavity filling process specifically comprises:
Be filled with at a slow speed: first within the t1 time, motlten metal be not subject under extra pressure, being filled with described die cavity;
Be filled with fast: within the t2 time after the t1 time, under the pressure-acting of motlten metal at injection punch head, pass through ingate filling die cavity;
Supercharging: in the t3 time after sand off, the motlten metal in die cavity is carried out to supercharging;
Pressurize: keep melting to keep the state after supercharging within the t4 time.
Preferably, described coating comprises lubricant, high temperature adhesion agent, high temperature film forming agent, EP agent.
Pump housing pressure casting method provided by the invention has following beneficial effect:
Because die cavity is vacuum state, effectively prevent die casting form the pump housing in form bubble, improved product quality; And by implement different pressure within the different time, motlten metal being filled with to die cavity, the pump housing of formation has very high hardness, intensity and hot strength.
Certainly, implement arbitrary product of the present invention and might not need to reach above-described all advantages simultaneously.
Brief description of the drawings
the pump housing pressure casting method flow chart that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiment
A kind of pump housing pressure casting method of the embodiment of the present invention, as shown in Figure 1, it comprises the following steps:
Install: pump housing compression mod is installed, described pump housing compression mod is carried out to preheating coating;
Combination: combination cover half and dynamic model also forms die cavity, locking cover half and dynamic model;
Vacuumize: the air in described die cavity is extracted out, made formation vacuum state in described die cavity;
Fill type: exert pressure molten metal bath is pushed and is filled with in described die cavity by extrusion mouth;
Extruding: in the condensation phase of motlten metal, the extrusion mouth from fixed mould inserts extruded rod, extruded rod overstocks and forms feeding hole in molten metal;
The demoulding: after melting metallic hardization forms pump housing goods, separate cover half and dynamic model.
Wherein said cavity filling process specifically comprises:
Be filled with at a slow speed: first within the t1 time, motlten metal be not subject under extra pressure, being filled with described die cavity;
Be filled with fast: within the t2 time after the t1 time, under the pressure-acting of motlten metal at injection punch head, pass through ingate filling die cavity;
Supercharging: in the t3 time after sand off, the motlten metal in die cavity is carried out to supercharging;
Pressurize: keep melting to keep the state after supercharging within the t4 time.
The described coating that the present embodiment adopts comprises lubricant, high temperature adhesion agent, high temperature film forming agent, EP agent.
The disclosed preferred embodiment of the present invention is just for helping to set forth the present invention above.Preferred embodiment does not have all details of detailed descriptionthe, and also not limiting this invention is only described detailed description of the invention.Obviously,, according to the content of this description, can make many modifications and variations.These embodiment are chosen and specifically described to this description, is in order to explain better principle of the present invention and practical application, thereby under making, technical field technical staff can understand and utilize the present invention well.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (3)
1. a pump housing pressure casting method, is characterized in that, comprises the following steps:
Install: pump housing compression mod is installed, described pump housing compression mod is carried out to preheating coating;
Combination: combination cover half and dynamic model also forms die cavity, locking cover half and dynamic model;
Vacuumize: the air in described die cavity is extracted out, made formation vacuum state in described die cavity;
Fill type: exert pressure molten metal bath is pushed and is filled with in described die cavity by extrusion mouth;
Extruding: in the condensation phase of motlten metal, the extrusion mouth from fixed mould inserts extruded rod, extruded rod overstocks and forms feeding hole in molten metal;
The demoulding: after melting metallic hardization forms pump housing goods, separate cover half and dynamic model.
2. pump housing pressure casting method as claimed in claim 1, is characterized in that, described cavity filling process specifically comprises:
Be filled with at a slow speed: first within the t1 time, motlten metal be not subject under extra pressure, being filled with described die cavity;
Be filled with fast: within the t2 time after the t1 time, under the pressure-acting of motlten metal at injection punch head, pass through ingate filling die cavity;
Supercharging: in the t3 time after sand off, the motlten metal in die cavity is carried out to supercharging;
Pressurize: keep melting to keep the state after supercharging within the t4 time.
3. pump housing pressure casting method as claimed in claim 1, is characterized in that, described coating comprises lubricant, high temperature adhesion agent, high temperature film forming agent, EP agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324279.9A CN104107894A (en) | 2014-07-08 | 2014-07-08 | Pump body pressure casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324279.9A CN104107894A (en) | 2014-07-08 | 2014-07-08 | Pump body pressure casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104107894A true CN104107894A (en) | 2014-10-22 |
Family
ID=51704990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324279.9A Pending CN104107894A (en) | 2014-07-08 | 2014-07-08 | Pump body pressure casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104107894A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004249334A (en) * | 2003-02-21 | 2004-09-09 | Suzuki Motor Corp | High vacuum die-casting method using oxygen shield |
| CN1895818A (en) * | 2005-07-13 | 2007-01-17 | 中国第一汽车集团公司 | Production of copper-alloy bearing retainer by die casting method |
| CN102126009A (en) * | 2011-03-01 | 2011-07-20 | 宁波旭升机械有限公司 | Die casting manufacturing process of aluminum alloy pump head |
| CN103567413A (en) * | 2013-09-30 | 2014-02-12 | 胜赛思精密压铸（扬州）有限公司 | Die-casting device for solving air hole defect of die-casting product and die-casting process thereof |
| CN103752790A (en) * | 2013-12-05 | 2014-04-30 | 重庆顺多利机车有限责任公司 | Die-casting process |
-
2014
- 2014-07-08 CN CN201410324279.9A patent/CN104107894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004249334A (en) * | 2003-02-21 | 2004-09-09 | Suzuki Motor Corp | High vacuum die-casting method using oxygen shield |
| CN1895818A (en) * | 2005-07-13 | 2007-01-17 | 中国第一汽车集团公司 | Production of copper-alloy bearing retainer by die casting method |
| CN102126009A (en) * | 2011-03-01 | 2011-07-20 | 宁波旭升机械有限公司 | Die casting manufacturing process of aluminum alloy pump head |
| CN103567413A (en) * | 2013-09-30 | 2014-02-12 | 胜赛思精密压铸（扬州）有限公司 | Die-casting device for solving air hole defect of die-casting product and die-casting process thereof |
| CN103752790A (en) * | 2013-12-05 | 2014-04-30 | 重庆顺多利机车有限责任公司 | Die-casting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207494524U (en) | A kind of compression mod of electric automobile gear-box housing | |
| JP2010195032A (en) | Method for manufacturing pipe with branch | |
| CN205853269U (en) | A kind of pouring gate structure of injection mold | |
| CN205437090U (en) | Vertical die casting machine | |
| CN101433945A (en) | Secondary sand-shooting molding technique for casting sand core | |
| CN104107894A (en) | Pump body pressure casting method | |
| CN105500610A (en) | Television set base injection molding mold | |
| CN207059114U (en) | A kind of automobile silencing pipe shaping mould | |
| CN101486074A (en) | Disappearance core production method | |
| CN110614745A (en) | Rapid gas-assisted forming precision injection molding process for ABS alloy injection molding part | |
| CN206263221U (en) | Simplify the V methods moulding system and casting mold system of ingot mould model | |
| KR20160064215A (en) | Green sand casting mold, manufacturing method therefor, and method for manufacturing cast iron object | |
| CN204413097U (en) | One is novel vacuumizes mould | |
| CN203495232U (en) | Injection molding mold capable of preventing backflow | |
| JP2019206135A (en) | Core mold of injection mold and injection molding method | |
| CN207014698U (en) | A kind of exhaust joint mould | |
| CN103909624A (en) | Plastic feeding structure of die | |
| CN103464758B (en) | A kind of injecting molding die preventing from flowing backwards | |
| CN103752790A (en) | Die-casting process | |
| CN203092947U (en) | Plastic feeding structure of mold | |
| CN206367155U (en) | Inject mould in a kind of tool box | |
| CN107971462B (en) | Blind riser sand core | |
| CN105800916A (en) | Mold structure for producing glass product | |
| JP2007531630A (en) | Casting manufacturing method | |
| CN201889423U (en) | Differential pressure casting mold of pressure cooker |
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: 20141022 |
|
| RJ01 | Rejection of invention patent application after publication |