GB2114153A - Aluminium silicon alloy - Google Patents
Aluminium silicon alloy Download PDFInfo
- Publication number
- GB2114153A GB2114153A GB08139191A GB8139191A GB2114153A GB 2114153 A GB2114153 A GB 2114153A GB 08139191 A GB08139191 A GB 08139191A GB 8139191 A GB8139191 A GB 8139191A GB 2114153 A GB2114153 A GB 2114153A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- weight
- silicon
- zinc
- aluminium
- 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.)
- Withdrawn
Links
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 title claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 21
- 239000011701 zinc Substances 0.000 claims abstract description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 34
- 239000000956 alloy Substances 0.000 claims description 34
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 24
- 239000010703 silicon Substances 0.000 claims description 24
- 239000004411 aluminium Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910000676 Si alloy Inorganic materials 0.000 claims description 4
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 4
- 238000007792 addition Methods 0.000 claims description 4
- 238000005097 cold rolling Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- -1 aluminium silicon zinc Chemical compound 0.000 claims description 2
- 239000001996 bearing alloy Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/02—Crankshaft bearings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Abstract
An aluminium silicon alloy including zinc, for use as a bearing lining on a steel backing, has a composition of, by weight, @% Si 1-4 Zn 8-12 Cu 0-0.5 Pb 0-3.0 Al balance a
Description
SPECIFICATION
Aluminium silicon alloy
The present invention relates to aluminium alloys for use as a bearing material, for example for use in internal combustion engines.
British Patent No. 1,593,006 discloses analuminium/silicon/zinc alloy comprising 2 to 8% by weight of silicon and 2 to 8% zinc with minor additions of lead and copper, the balance being aluminium. It is believed that this alloy may have been developed from an alloy comprising 1.5% by weight silicon and 5% by weight zinc, which is used in the manufacture of crankshaft bearings in
Germany.
Bearing alloys of the aluminium silicon zinc type are generally continuously cast, rolled, and roll bonded to steel, to produce a bimetal strip from which the crankshaft bearings are formed.
The rolling operation is preferably carried out cold, since cold rolling is a quicker and less costly operation than hot rolling. However, cold rolling of the alloys described in British Patent No.
1 593006 is difficult in that extensive edge cracking is found to occur when the silicon content is towards the top end of the range.
Furthermore, alloys with a silicon content towards the bottom end of the range are less satisfactory in their bearing properties when the zinc content is limited to a maximum of 8%.
It is an object of the present invention to provide an aluminium/silicon/zinc alloy having satisfactory bearing characteristics but having improved processing characteristics.
According to the invention there is provided an alloy comprising from 1 to 4% silicon by weight and from 8 to 12% zinc by weight, the balance being aluminium.
It has been found that by limiting the silicon content to maximum of 4% and increasing the zinc content to 8-12%, there is no loss of bearing properties, but a considerable advantage is gained in processing characteristics.
In fact, it has been found that the alloys described in the present application may be cold rolled to a much greater extent than those described in the prior art without significant edge cracking. Material utilisation and process economics may thereby be improved
Preferably, the silicon content is from 13%, for example about 3% by weight, preferably, the zinc content is from 9 to 1 1% for example about 10% by weight.
Minor additions of up to 3% lead and up to 0.5% copper have proved to be beneficial in certain instances and these may optionally be included in the alloy.
Such an alloy may be used as a bearing lining on a backing, for example a backing of steel, aluminium or aluminium alloy. The bearing may be formed directly or first formed as a blank and subsequently formed into the desired shape.
The invention may be carried into practice in various ways and one embodiment will be described by way of illustration in the following example.
Example I
In this example, an alloy in accordance with the invention is formed as the lining on a steel backed crankshaft bearing.
An alloy having a composition comprising 3% by weight silicon and 10% by weight zinc, the balance being aluminium was established in a melting furnace. The melt was transferred to a continuous casing machine and cast into a billet 200 mm x 25 mm and cut into lengths. The cast surface was removed to a depth of 1 mm by machining. The machined billet was then cold rolled to 1.5 mm thickness in a succession of passes, and coiled.
One surface of the coiled alloy was brushed and roll bonded to the prepared surface of a coil of steel. The bi-metal strip was annealed at 31 0 C to consolidate the bond, and crankshaft bearings were subsequently formed from the annealed bimetal by conventional techniques.
1. An alloy comprising from 1 to 4% silicon by weight and from 8 to 1 2% zinc by weight, the balance being aluminium.
2. An alloy as claimed in Claim 1 in which the silicon content is about 3% by weight.
3. An alloy as claimed in Claim 1 or Claim 2 in which the zinc content is about 10% by weight.
4. An alloy as claimed in any preceding claim further including up to 3% by weight of lead.
5. An alloy as claimed in any preceding claim further including up to 0.5% by weight of copper.
6. A bearing comprising a metal backing having a bearing layer comprising an alloy as claimed in any preceding claim.
7. A bearing constructed and arranged substantially as herein specifically described in
Example I.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
1. An alloy comprising from 1 to 4% silicon by weight and from 8 to 1 2% zinc by weight, the balance being aluminium.
2. An alloy as claimed in Claim 1 in which the silicon content is about 3% by weight.
3. An alloy as claimed in Claim 1 or Claim 2 in which the zinc content is about 10% by weight.
4. An alloy as claimed in any preceding claim further including up to 3% by weight of lead.
5. An alloy as claimed in any preceding claim further including up to 0.5% by weight of copper.
6. A bearing comprising a metal backing having a bearing layer comprising an alloy as claimed in any preceding claim.
7. A bearing constructed and arranged substantially as herein specifically described in
Example I.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08139191A GB2114153A (en) | 1981-12-31 | 1981-12-31 | Aluminium silicon alloy |
| JP57227880A JPS58141357A (en) | 1981-12-31 | 1982-12-28 | Bearing alloy |
| IT49768/82A IT1149195B (en) | 1981-12-31 | 1982-12-29 | IMPROVEMENT IN ALUMINUM AND SILICON ALLOY BEARINGS |
| FR8221984A FR2519395A1 (en) | 1981-12-31 | 1982-12-29 | MATERIAL FOR ALUMINUM-SILICON ALLOY PADS |
| DE19823248656 DE3248656A1 (en) | 1981-12-31 | 1982-12-30 | WAREHOUSE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08139191A GB2114153A (en) | 1981-12-31 | 1981-12-31 | Aluminium silicon alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2114153A true GB2114153A (en) | 1983-08-17 |
Family
ID=10526905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08139191A Withdrawn GB2114153A (en) | 1981-12-31 | 1981-12-31 | Aluminium silicon alloy |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS58141357A (en) |
| DE (1) | DE3248656A1 (en) |
| FR (1) | FR2519395A1 (en) |
| GB (1) | GB2114153A (en) |
| IT (1) | IT1149195B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2590464C1 (en) * | 2015-03-31 | 2016-07-10 | Акционерное общество "Научно-исследовательский институт железнодорожного транспорта" (АО "ВНИИЖТ") | Method of producing bimetal workpiece from antifriction alloy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411762A1 (en) * | 1994-04-06 | 1995-10-12 | Kolbenschmidt Ag | Plain bearing material |
-
1981
- 1981-12-31 GB GB08139191A patent/GB2114153A/en not_active Withdrawn
-
1982
- 1982-12-28 JP JP57227880A patent/JPS58141357A/en active Pending
- 1982-12-29 IT IT49768/82A patent/IT1149195B/en active
- 1982-12-29 FR FR8221984A patent/FR2519395A1/en active Pending
- 1982-12-30 DE DE19823248656 patent/DE3248656A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2590464C1 (en) * | 2015-03-31 | 2016-07-10 | Акционерное общество "Научно-исследовательский институт железнодорожного транспорта" (АО "ВНИИЖТ") | Method of producing bimetal workpiece from antifriction alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2519395A1 (en) | 1983-07-08 |
| IT1149195B (en) | 1986-12-03 |
| JPS58141357A (en) | 1983-08-22 |
| DE3248656A1 (en) | 1983-09-01 |
| IT8249768A0 (en) | 1982-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |