CN1396022A - Horizontal conticasting apparatus for Al-Pb alloy-steel back bush material - Google Patents
Horizontal conticasting apparatus for Al-Pb alloy-steel back bush material Download PDFInfo
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- CN1396022A CN1396022A CN 02111806 CN02111806A CN1396022A CN 1396022 A CN1396022 A CN 1396022A CN 02111806 CN02111806 CN 02111806 CN 02111806 A CN02111806 A CN 02111806A CN 1396022 A CN1396022 A CN 1396022A
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Abstract
A horizontal conticasting composite apparatus for making the Al-Pb alloy bush material with steel backing is composed of smelting unit, conticasting, compounding unit, feeding-levelling unit and auxiliary units. Its advantages are high productivity, high conticasting quality (no Pb eduction), and high adhesion between steel backing and Al-Pb alloy.
Description
Technical field: what the present invention relates to is a kind of steel-backed bearing producing device, and particularly a kind of horizontal casting set composite of Al-Pb alloy-steel back bush material belongs to casting field.
Background technology: because Al-Pb alloy has excellent abrasive and seizure resistance, and has self-lubricating function, it is that alloy is used as internal combustion engine bearings such as automobile that this kind alloy will extensively replace aluminium-Xi.Because Al-Pb alloy is easy to generate the shortcoming of gravity segregation, thereby the method that is used to produce Al-Pb alloy still can not satisfy the market demands of internal combustion engine bearing.When producing and studying this kind alloy, adopt (1) powder metallurgy sintered rolling mostly both at home and abroad, (2) ultrasonic sensing paddling process, (3) stir fast cold process, and continuous metal cast process is stirred in (4) induction, (5) mechanical alloying, (6) stir the melt ordinary casting method.Above method shortcoming is: or equipment complex and expensive, or productivity ratio is extremely low, or both have concurrently, can not be applicable to large-scale manufacturing and production.
Production of domestic representational Al-Pb alloy at present and research manufacture method be to be cooperated by Beijing Non-Ferrous Metal Research General Academy and Beijing automobile and motorcycle bearing shell factory (1) nineteen ninety-five, and the Al-Pb that has set up yearly productive capacity and be 1000 tons is a bearing alloy composite band production line.But produce and all to adopt traditional RS/PM technology (promptly form the Al-Pb alloy powder, behind the system of the rerolling sintering with the rolling bush material that is compounded to form of steel backing) and device, its complex process by aerosolization, long flow path, product quality is wayward, the cost height, yield poorly, thereby reduced Enterprises'Competitiveness; Secondly, use this technology, plumbous content is restricted, and generally is no more than 10%; Adopt rolling composite alloy layer and steel backing in addition, cause the crystal grain distortion, also can reduce the performance of bush material greatly.Find by literature search, author Sun Daren etc., at " Special Processes of Metal Castings and non-ferrous alloy " 1998 (5): 24-26 one literary composition " preparation of casting sliding bearing of Al-Pb alloy alloy and microscopic structure thereof " is presented in aluminium-metal manufacture process, melt is warmed up to 700 ℃, the powerful stirring cast with commonsense method again.Owing to stir the time difference with casting process, add that the casting process cooling velocity is slow, thereby this kind manufacture method can not eliminate the plumbous segregation of casting process, in addition, when making bearing shell, also need alloy and steel plate rolling, also reduce the efficient that bearing shell is produced.
Summary of the invention: the present invention is directed to the deficiencies in the prior art and defective, a kind of horizontal casting set composite of Al-Pb alloy-steel back bush material is provided, adopt the continuous casting set composite, being about to the Al-Pb alloy melt is heated to more than the single liquidus curve, then alloy melt is cast on the steel backing, guaranteeing under alloy-layer and the compound good condition of steel backing,, guaranteeing that alloy melt obtains * 10 by adopting the method for water mold
2℃/cooling velocity of S, thereby obtain that lead button is evenly distributed in the alloy-layer, lead button is tiny, between alloy-layer and the steel backing transition zone tissue reasonable, combine good Al-(5-20) %Pb-steel back bush material.The present invention mainly comprises: melting appartus, continuous casting set composite, feeding apparatus for leveling and servicing unit, continuous casting set composite, feeding apparatus for leveling are fixed on the ground foundation, melting appartus is fixed in continuous casting set composite upper end with support, melting appartus lower end infusion port is higher than the continuous casting set composite of bottom, melting appartus interconnects by its lower end drain pipe and continuous casting set composite, and continuous casting set composite, feeding apparatus for leveling and servicing unit are combined by material conveying platform.
The continuous casting set composite comprises: cast gate, steel backing, the Al-Pb alloy-layer, bearing shell blank after compound, the support water cooling copper sleeve, the graphite counterdie, the graphite patrix, cast gate is placed in the opening of graphite patrix, can control poring rate by cast gate, steel backing is positioned at the mold cavity that the graphite upper and lower mould constitutes, alloy liquid from cast gate is cast on the steel backing, the translational speed of steel backing (being the continuous casting casting speed) is determined by material conveying platform, bearing shell blank after compound is between graphite counterdie and graphite patrix, and pull out along with sending into of steel backing, the inner two-way feeding cooling water of water cooling copper sleeve, and closely contact with the graphite upper and lower mould, determined the cooling velocity of melt, the graphite counterdie, the graphite patrix combines, determined the thickness of compound alloy-layer on the steel backing, support connects into an integral body with each several part, alloy layer thickness and continuous casting casting speed on the bearing shell blank after compound, ducted cooling water of water cooling copper sleeve and steel plate preheat temperature have determined jointly: the compound adhesion strength (2) of (1) alloy-layer and steel backing is by the alloy-layer tissue of cooling velocity control and the tissue of transition zone.
The fusing and the flow of melting appartus control Al-Pb alloy melt of the present invention, guarantee to obtain the alloy melt of single liquid phase, in melting appartus, Al is melted to more than the single liquidus temperature 50 ℃, add lead button, special-purpose multifunctional flux in the covering, be warmed up to said temperature again, leave standstill 20～30min; Start the feeding apparatus for leveling, make steel backing pass through the continuous casting set composite with certain speed, open flow controller, alloy liquid is injected in the continuous casting set composite, make the compound and quick cooling of alloy liquid and steel backing, special-purpose multifunctional flux or inert gas shielding and purification are adopted in melting appartus top, and the melt delivery outlet is arranged at the melting appartus bottom, and adopt the poring rate of aluminium flow quantity control device control melt and water fluence; Before steel backing enters the continuous casting set composite, can obtain needed preheat temperature, and after composite blank pulled out the continuous casting set composite, utilize the servicing unit water to cool off once more, so that flatten, cut, export and pile up.
The present invention has substantive distinguishing features and marked improvement, compare with prior art, when obtaining above-mentioned cooling velocity, both can guarantee that alloy melt the Pb segregation can not occur in whole process of production, can also guarantee the bond strength size reasonable of alloy-layer and steel backing and plumbous distortion situation not occur.Adopt the continuous casting set composite to produce Al-(5-20) %Pb-steel back bush material, can guarantee that the alloy-layer of bearing shell blank is organized as plumbous phase particle with tiny approximate spherical being uniformly distributed on the matrix, the average diameter of lead button is about 10 μ m; Transition zone tissue between alloy-layer and the steel backing is reasonable, and adhesion strength is much larger than rolling Al-20%Sn-steel backing brick and tile material, and technology is simple, and the productivity ratio height can satisfy the demand of domestic and international internal combustion engine bearing fully.
Description of drawings: Fig. 1 structural representation of the present invention
Fig. 2 continuous casting set composite structural representation
The specific embodiment: as shown in Figure 1 and Figure 2, the present invention mainly comprises: melting appartus 1, continuous casting set composite 2, feeding apparatus for leveling 3 and servicing unit 4, continuous casting set composite 2, feeding apparatus for leveling 3 are fixed on the ground foundation, melting appartus 1 usefulness support 5 is fixed in continuous casting set composite 2 upper ends, melting appartus 1 lower end infusion port is higher than the continuous casting set composite 2 of bottom, melting appartus 1 interconnects by its lower end drain pipe and continuous casting set composite 2, and continuous casting set composite 2, feeding apparatus for leveling 3 and servicing unit 4 are combined by material conveying platform 6.
The continuous casting set composite comprises: cast gate 7, steel backing 8, Al-Pb alloy-layer 9, bearing shell blank 10 after compound, support 11, water cooling copper sleeve 12, graphite counterdie 13, graphite patrix 14, cast gate 7 is placed in the opening of graphite patrix 14, steel backing 8 is positioned at graphite upper and lower mould 13, in 14 mold cavities that constitute, bearing shell blank 10 after compound is between graphite counterdie 13 and graphite patrix 14, water cooling copper sleeve 12 inner two-way feeding cooling waters, and with graphite upper and lower mould 13,14 closely contacts, graphite counterdie 13, graphite patrix 14 combines, and support 11 connects into an integral body with each several part.
Claims (2)
1, a kind of horizontal casting set composite of Al-Pb alloy-steel back bush material, mainly comprise: melting appartus (1), feeding apparatus for leveling (3) and servicing unit (4), it is characterized in that also comprising: continuous casting set composite (2), continuous casting set composite (2), feeding apparatus for leveling (3) is fixed on the ground foundation, melting appartus (1) is fixed in continuous casting set composite (2) upper end with support (5), melting appartus (1) lower end infusion port is higher than the continuous casting set composite (2) of bottom, melting appartus (1) interconnects by its lower end drain pipe and continuous casting set composite (2), continuous casting set composite (2), feeding apparatus for leveling (3) and servicing unit (4) are combined by material conveying platform (6).
2, the horizontal casting set composite of this Al-Pb alloy-steel back bush material according to claim 1, it is characterized in that the continuous casting set composite comprises: cast gate (7), steel backing (8), Al-Pb alloy-layer (9), bearing shell blank (10) after compound, support (11), water cooling copper sleeve (12), graphite counterdie (13), graphite patrix (14), cast gate (7) is placed in the opening of graphite patrix (14), steel backing (8) is positioned at graphite upper and lower mould (13), (14) in the mold cavity of Gou Chenging, bearing shell blank (10) after compound is positioned between graphite counterdie (13) and the graphite patrix (14), the inner two-way feeding cooling water of water cooling copper sleeve (12), and with graphite upper and lower mould (13), (14) closely contact, graphite counterdie (13), graphite patrix (14) combines, and support (11) connects into an integral body with each several part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02111806XA CN1168562C (en) | 2002-05-23 | 2002-05-23 | Horizontal conticasting apparatus for Al-Pb alloy-steel back bush material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02111806XA CN1168562C (en) | 2002-05-23 | 2002-05-23 | Horizontal conticasting apparatus for Al-Pb alloy-steel back bush material |
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| Publication Number | Publication Date |
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| CN1396022A true CN1396022A (en) | 2003-02-12 |
| CN1168562C CN1168562C (en) | 2004-09-29 |
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| CNB02111806XA Expired - Fee Related CN1168562C (en) | 2002-05-23 | 2002-05-23 | Horizontal conticasting apparatus for Al-Pb alloy-steel back bush material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308474C (en) * | 2004-07-20 | 2007-04-04 | 刘永涛 | Aluminum-lead alloy bearing bush cast ingot and production method and device thereof |
| CN102114530A (en) * | 2010-12-15 | 2011-07-06 | 金龙精密铜管集团股份有限公司 | Composite pipe blank casting device and continuous casting method |
| CN104128588A (en) * | 2014-06-25 | 2014-11-05 | 西安交通大学 | Semisolid continuous casting and electromagnetic forming connecting device for compound bearing pads |
| CN110280742A (en) * | 2019-07-30 | 2019-09-27 | 大连理工大学 | The alloy thickness control device and method of steel back copper alloy composite material |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298082B (en) * | 2008-06-20 | 2010-04-07 | 中国船舶重工集团公司第十二研究所 | Continuous casting heat composite apparatus and method for preparing copper lead alloy-steel shaft bushing material |
-
2002
- 2002-05-23 CN CNB02111806XA patent/CN1168562C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308474C (en) * | 2004-07-20 | 2007-04-04 | 刘永涛 | Aluminum-lead alloy bearing bush cast ingot and production method and device thereof |
| CN102114530A (en) * | 2010-12-15 | 2011-07-06 | 金龙精密铜管集团股份有限公司 | Composite pipe blank casting device and continuous casting method |
| CN102114530B (en) * | 2010-12-15 | 2012-10-03 | 金龙精密铜管集团股份有限公司 | Composite pipe blank casting device and continuous casting method |
| CN104128588A (en) * | 2014-06-25 | 2014-11-05 | 西安交通大学 | Semisolid continuous casting and electromagnetic forming connecting device for compound bearing pads |
| CN104128588B (en) * | 2014-06-25 | 2016-02-24 | 西安交通大学 | A kind of semisolid continuous casting of composite bearing and electro-magnetic forming jockey |
| CN110280742A (en) * | 2019-07-30 | 2019-09-27 | 大连理工大学 | The alloy thickness control device and method of steel back copper alloy composite material |
| CN110280742B (en) * | 2019-07-30 | 2020-11-13 | 大连理工大学 | Alloy thickness control device and method for steel-backed copper alloy composite material |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
| CN110369683B (en) * | 2019-08-09 | 2020-06-02 | 大连理工大学 | Bearing bush antifriction layer copper alloy mold filling device and preparation method of bearing bush bimetal composite material |
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| CN1168562C (en) | 2004-09-29 |
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