CN102527979A - Pressure casting process for bearing block - Google Patents
Pressure casting process for bearing block Download PDFInfo
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- CN102527979A CN102527979A CN2010105568022A CN201010556802A CN102527979A CN 102527979 A CN102527979 A CN 102527979A CN 2010105568022 A CN2010105568022 A CN 2010105568022A CN 201010556802 A CN201010556802 A CN 201010556802A CN 102527979 A CN102527979 A CN 102527979A
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Abstract
The invention discloses a pressure casting process for a bearing block, which includes the steps: mounting a die; preheating the die; cleaning the die; spraying coatings on the die; placing the die on a die assembly device for die assembly; selecting injection pressure and filling speed; injecting liquid metal into a cavity and leading the cavity to be filled with the liquid metal; continuing injection under the action of an injection plunger until the liquid metal filled to a flow gate of the cavity is completely solidified; taking out a casting by opening the cavity after maintaining pressure; and cleaning the casting. The pressure casting process has the advantages that fine product quality is ensured, precision, strength and hardness are high, machining amount is small, large quantities of machining equipment and machining time are reduced, metal utilization rate is increased, both assembly time and the metal are saved, production efficiency is high, and mechanization and automation are easy to realize.
Description
Technical field:
The present invention relates to a kind of bearing block pressure casting process.
Background technology:
Bearing block compression casting is one of state-of-the-art metal forming process, is to realize few smear metal, and the effective way of chipless is used very extensively, develops very fast.Diecasting alloys no longer are confined to zinc, aluminium, magnesium and the copper of non-ferrous metal at present; And enlarge gradually and be used for die casting cast iron and steel-casting; And the pressure casting method of traditional bearing block has following shortcoming: poor product quality, and precision, hardness are low, have increased a large amount of process equipments and man-hour; Production efficiency is low, is difficult for realizing mechanization and automation.
Summary of the invention:
The objective of the invention is provides a kind of assurance good product quality in order to overcome above deficiency, and production efficiency is high, the bearing block pressure casting process that economic effect is good.
The object of the invention is realized through following technical scheme: a kind of bearing block pressure casting process may further comprise the steps:
A, installation mold;
B, preheated mold, preheat temperature are 180-220 ℃;
C, cleaning mould;
D, on mould stenciling coating;
E, mould is placed on carries out matched moulds on the mold closing mechanism;
F, selection injection ratio pressure and filling velocity, the fast shot journey is 250-, the slow shot journey is 0-250mm, liquid metal is opened injected die cavity and be full of die cavity;
G, continuation injection under the injection punch head effect are solidified to ingate until liquid metal filling die cavity fully, and cast temperature is 610-680 ℃, the thick 15-30mm of material cake, and the dwell time is 6-10s;
H, hold and press the back open form to take out foundry goods;
I, cleaning foundry goods.
The present invention compared with prior art has the following advantages:
1, guarantees good product quality, precision, intensity, hardness height;
2, processing capacity is little, has reduced a large amount of process equipments and man-hour, improves using rate of metal, when not only having saved the assembler but also save metal;
3, production efficiency is high, is prone to realize mechanization and automation.
The specific embodiment:
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
A kind of specific embodiment of bearing block pressure casting process of the present invention may further comprise the steps:
A, installation mold;
B, preheated mold, preheat temperature are 180-220 ℃;
C, cleaning mould;
D, on mould stenciling coating;
E, mould is placed on carries out matched moulds on the mold closing mechanism;
F, selection injection ratio pressure and filling velocity, the fast shot journey is 250-, the slow shot journey is 0-250mm, liquid metal is opened injected die cavity and be full of die cavity;
The selection of injection ratio pressure should be confirmed according to different-alloy and casting structure characteristic.To the selection of filling velocity, the foundry goods of generally having relatively high expectations for heavy wall or internal soundness should be selected lower filling velocity and high boost pressure; For thin-walled or demanding foundry goods of surface quality and complicated foundry goods, should select higher ratio to go through and high filling velocity.
G, continuation injection under the injection punch head effect are solidified to ingate until liquid metal filling die cavity fully, and cast temperature is 610-680 ℃, the thick 15-30mm of material cake, and the dwell time is 6-10s, the length of holding the pressure time depends on the material and the wall thickness of foundry goods.
H, hold and press the back open form to take out foundry goods;
The open form time is answered precise control.The open form time is too short, because alloy strength is still low, possibly ejects and when die-casting die falls, causes distortion at foundry goods; But the open form time is oversize, and then casting temperature is low excessively, shrink big, to loosing core and to eject the resistance of foundry goods also big.The general open form time presses 1 millimeter need of casting section thickness and calculates for 3 seconds, adjusts through trial then.
I, cleaning foundry goods.
The cleaning of foundry goods is very hard work, 10～15 times of its workload die casting workload often.Therefore with the raising of die casting machine productivity ratio, the increase of output, casting cleaning work realize that mechanization and automation are very important, need excision cast gate and overlap, surface treatment and finishing.
The present invention has the assurance good product quality, and precision, intensity, hardness are high, and processing capacity is little, has reduced a large amount of process equipments and man-hour, improves using rate of metal, and when not only having saved the assembler but also save metal, production efficiency is high, is prone to realize the advantage of mechanization and automation.
Claims (1)
1. bearing block pressure casting process is characterized in that: may further comprise the steps:
A, installation mold;
B, preheated mold, preheat temperature are 180-220 ℃;
C, cleaning mould;
D, on mould stenciling coating;
E, mould is placed on carries out matched moulds on the mold closing mechanism;
F, selection injection ratio pressure and filling velocity, the fast shot journey is 250-, the slow shot journey is 0-250mm, liquid metal is opened injected die cavity and be full of die cavity;
G, continuation injection under the injection punch head effect are solidified to ingate until liquid metal filling die cavity fully, and cast temperature is 610-680 ℃, the thick 15-30mm of material cake, and the dwell time is 6-10s;
H, hold and press the back open form to take out foundry goods;
I, cleaning foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105568022A CN102527979A (en) | 2010-11-23 | 2010-11-23 | Pressure casting process for bearing block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105568022A CN102527979A (en) | 2010-11-23 | 2010-11-23 | Pressure casting process for bearing block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102527979A true CN102527979A (en) | 2012-07-04 |
Family
ID=46336697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105568022A Pending CN102527979A (en) | 2010-11-23 | 2010-11-23 | Pressure casting process for bearing block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102527979A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909245A (en) * | 2014-04-04 | 2014-07-09 | 安徽省辉煌机械制造有限公司 | Gear chamber cover manufacturing process |
| CN103909244A (en) * | 2014-04-04 | 2014-07-09 | 安徽省辉煌机械制造有限公司 | Process for manufacturing shells of speed reducers |
| CN109202021A (en) * | 2018-11-14 | 2019-01-15 | 徐州万有机械科技有限公司 | A kind of casting method of bearing base |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569053A (en) * | 1979-06-30 | 1981-01-29 | Akio Nakano | Construction of feed path of molten metal in hot chamber type die casting machine |
| CN1887480A (en) * | 2006-07-27 | 2007-01-03 | 上海交通大学 | Extrusion casting process for making automobile engine rack of magnesium alloy |
| CN101274361A (en) * | 2008-05-08 | 2008-10-01 | 南昌航空大学 | Low speed vacuum squeeze casting technology |
| CN101618450A (en) * | 2009-07-21 | 2010-01-06 | 华南理工大学 | Method for indirect extrusion casting by utilizing filling of electromagnetic force and device thereof |
-
2010
- 2010-11-23 CN CN2010105568022A patent/CN102527979A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569053A (en) * | 1979-06-30 | 1981-01-29 | Akio Nakano | Construction of feed path of molten metal in hot chamber type die casting machine |
| CN1887480A (en) * | 2006-07-27 | 2007-01-03 | 上海交通大学 | Extrusion casting process for making automobile engine rack of magnesium alloy |
| CN101274361A (en) * | 2008-05-08 | 2008-10-01 | 南昌航空大学 | Low speed vacuum squeeze casting technology |
| CN101618450A (en) * | 2009-07-21 | 2010-01-06 | 华南理工大学 | Method for indirect extrusion casting by utilizing filling of electromagnetic force and device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《特种铸造手册》编写组: "《特种铸造手册（下册）》", 31 August 1978, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909245A (en) * | 2014-04-04 | 2014-07-09 | 安徽省辉煌机械制造有限公司 | Gear chamber cover manufacturing process |
| CN103909244A (en) * | 2014-04-04 | 2014-07-09 | 安徽省辉煌机械制造有限公司 | Process for manufacturing shells of speed reducers |
| CN109202021A (en) * | 2018-11-14 | 2019-01-15 | 徐州万有机械科技有限公司 | A kind of casting method of bearing base |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |