US1502321A - Bearing metal alloy - Google Patents
Bearing metal alloy Download PDFInfo
- Publication number
- US1502321A US1502321A US496632A US49663221A US1502321A US 1502321 A US1502321 A US 1502321A US 496632 A US496632 A US 496632A US 49663221 A US49663221 A US 49663221A US 1502321 A US1502321 A US 1502321A
- Authority
- US
- United States
- Prior art keywords
- per cent
- phosphorus
- metal alloy
- alloy
- bearing metal
- 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.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C11/00—Alloys based on lead
- C22C11/08—Alloys based on lead with antimony or bismuth as the next major constituent
- C22C11/10—Alloys based on lead with antimony or bismuth as the next major constituent with tin
Definitions
- This invention relates to bearing metal alloys with the characteristic feature of a high (75 to 80 per cent) lead content.
- Alloys of this kind have approximately the following composition: about 80 per cent of lead, about 10 to 15 per (ent of antimony, about 5 to 10 per cent of tin, together with small intentional additions of co per.
- the alloys of the above composition high in lead have mostly an insuflicient degree of hardness, usually below or approximately 20 Brinell. Moreover, when submitted to heavy strains and especially when the lubrication fails these bearin crumble (or scale), individual small parts of the bearing becoming detached, a disadvantage which at once produces hot running and thus causes serious interference with the working of the machine. This tendency to crumble is especially dangerous when the direction of rotation is suddenly changed, as often ha pens in railway shunting.
- the introduction of phosphorus into the alloy high in lead may be effected directly, but preferablyby using an intermediate alloy.
- the alloy of phosphoruscopper; phosphorus manganese copper; phosphorus-zinc and phosphorus-brass have been found to be specially suitable.
- the above phosphorus alloys have the advanta e of further improving ing the Brinell hardness, and also ensuring the more reliable working of the bearings.
- a hearing metal alloy consisting mainly of lead, and containing about 10 to 15 per cent of antimony, about 5 to 10 per cent of tin, and about 0.5 per cent of phosphorus.
Description
R0 Drawing.
To all whom it may concern:
Be' it known that we, KARL Miiunu and WILHELM SANDER, citizens of the German Republic, and residing at Essen, Germany, have invented a new and useful Improvement in Bearing Metal Alloys; and we do hereby declare the following to be a full, clear, and exact description of the same.
This invention relates to bearing metal alloys with the characteristic feature of a high (75 to 80 per cent) lead content.
Bearing metalsof this type have latterly been frequently and largely employed in practice. Alloys of this kind have approximately the following composition: about 80 per cent of lead, about 10 to 15 per (ent of antimony, about 5 to 10 per cent of tin, together with small intentional additions of co per.
evertheless up to the present the field of technical ap lication of such bearing metals of high lea content has been limited.
In the case of heavy loads a bearing metal with high tin content hadalw ays to be used.
The alloys of the above composition high in lead have mostly an insuflicient degree of hardness, usually below or approximately 20 Brinell. Moreover, when submitted to heavy strains and especially when the lubrication fails these bearin crumble (or scale), individual small parts of the bearing becoming detached, a disadvantage which at once produces hot running and thus causes serious interference with the working of the machine. This tendency to crumble is especially dangerous when the direction of rotation is suddenly changed, as often ha pens in railway shunting.
Accor ing to our invention these drawbacks are avoided and the properties of such bearing metals as mentioned above, consisting mainly of lead, and containing antimonyand tin are considerably improved by a small percenta say about 0.5 or cent of phosphorus, w ich is added to t e alloy in question. The addition of phosphorus increases the Brinell hardness by more than 50 per cent, such improved bearing metals having generally a Brinell hardness of above 30. At the same time however, the addition of phosphorus produces such an improvement in the physical properties of the alloy, that the tendency to crumble (scale) and metals tend to Murmur. AND wILnnLm SANDER, or ESSEN, i 21G METAL ALLOY.
Application filed August 29, .1921. Serial No. 49$,E.
abrasion disappears. Practical experiments have shown that bearing metals high in lead, which have been improved by the introduction of phosphorus, will give the. same technical results as a high-grade white metal alloy containing tin. These new bearing metals may therefore be regarded as fully equivalent substitutes for the latter.
The introduction of phosphorus into the alloy high in lead may be effected directly, but preferablyby using an intermediate alloy. As such, the alloy of phosphoruscopper; phosphorus manganese copper; phosphorus-zinc and phosphorus-brass have been found to be specially suitable. Apart from facilitating the introduction of the phosphorus, the above phosphorus alloys have the advanta e of further improving ing the Brinell hardness, and also ensuring the more reliable working of the bearings.
. Furthermore, we have found that the addition of a very small amount of iron (up to about 1 per cent) considerably diminishes the brittleness of the alloy under consideration increasing at the same time its toughness;
What we claim is:
1. A hearing metal alloy com rising approximately eighty per cent 0 lead, the balance including antimony and tin in amounts not less than ten per cent and five per cent respectively, and approximately 0.5 per cent of phosphorus.
2. A hearing metal alloy consisting mainly of lead, and containing about 10 to 15 per cent of antimony, about 5 to 10 per cent of tin, and about 0.5 per cent of phosphorus.
- 3. A bearingmetal alloy com rising approximately eighty per cent 0 balance including antimony and tin in amounts not less than ten per cent and five per cent respectively, and a small percentage of hosphorus.
n testimony whereof, we have signed our names to this specification in the presence of two subscribing witnesses.
DR. KARL MULLER.
DR. WILHELM SANDER.
Witnesses:
AUcUs'r Warm, Fnrrz Rom...
lead, the
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US496632A US1502321A (en) | 1921-08-29 | 1921-08-29 | Bearing metal alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US496632A US1502321A (en) | 1921-08-29 | 1921-08-29 | Bearing metal alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US1502321A true US1502321A (en) | 1924-07-22 |
Family
ID=23973481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US496632A Expired - Lifetime US1502321A (en) | 1921-08-29 | 1921-08-29 | Bearing metal alloy |
Country Status (1)
Country | Link |
---|---|
US (1) | US1502321A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2599628A (en) * | 1949-12-22 | 1952-06-10 | American Metal Co Ltd | Lead base alloy |
US4591536A (en) * | 1983-10-01 | 1986-05-27 | Glyco Metall-Werke Daelen & Hofmann KG | Plain bearing and method of manufacture |
-
1921
- 1921-08-29 US US496632A patent/US1502321A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2599628A (en) * | 1949-12-22 | 1952-06-10 | American Metal Co Ltd | Lead base alloy |
US4591536A (en) * | 1983-10-01 | 1986-05-27 | Glyco Metall-Werke Daelen & Hofmann KG | Plain bearing and method of manufacture |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2229065A (en) | Austenitic alloy steel and article made therefrom | |
US1502321A (en) | Bearing metal alloy | |
US1990590A (en) | Alloy steel | |
SU1188221A1 (en) | Steel | |
US1718502A (en) | Copper-aluminum alloy | |
US2075990A (en) | Cast iron | |
SU456035A1 (en) | Austenitic Manganese Iron | |
US1732202A (en) | Air-toughened alloy steel | |
US3567435A (en) | High strength steel containing chromium and sulfur | |
US2056591A (en) | Articles with reduced tendency to corrode | |
US2035392A (en) | Copper steel alloys | |
US2754202A (en) | Aluminum base bearing | |
US1919211A (en) | Alloy steel | |
US1745645A (en) | Albert sattvettr | |
US1342911A (en) | Steel alloy | |
US1388157A (en) | Vanadium-containing impact-tool for hot work | |
US2185616A (en) | High-speed steel | |
RU2527572C1 (en) | Antifriction vast iron | |
US2102283A (en) | Alloy steel | |
US1930956A (en) | Acid resisting alloy | |
US1955529A (en) | High speed steel | |
US1941202A (en) | Alloy steel | |
US1421686A (en) | Zinc alloy | |
US2996377A (en) | Copper lead alloys | |
US1050342A (en) | Iron-nickel-copper alloy. |