US2008253919A1PendingUtilityA1
Powder-Metallurgically Produced, Wear-Resistant Material
Assignee: KOPPERN ENTWICKLUNGS GMBH & COPriority: Apr 29, 2005Filed: May 2, 2006Published: Oct 16, 2008
Est. expiryApr 29, 2025(expired)· nominal 20-yr term from priority
C22C 33/0285C22C 38/46C22C 38/56Y10T428/12C22C 38/001C22C 38/34C22C 38/50C22C 38/58C22C 38/02C22C 33/0257C22C 38/52B22F 2998/10B22F 2999/00C22C 30/00C22C 38/44C22C 38/48
45
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A wear-resistant material comprising an alloy that contains: 1.5-5.5 wt. % carbon, 0.1-2.0 wt. % silicon, max. 2.0 wt. % manganese, 3.5-30.0 wt. % chromium, 0.3-10 wt. % molybdenum, 0-10 wt. % tungsten, 0.1-30 wt. % vanadium, 0-12 wt. % niobium, 0.1-12 wt. % titanium and 1.3-3.5 wt. % nickel, the remainder being comprised of iron and production-related impurities, whereby the carbon content fulfils the following condition: CAlloy [ w %]= S 1+ S 2+ S 3 where S1=(Nb+2(Ti+V−0.9))/a, S2=(Mo+W/2+Cr−b)/5, S3=c+(TH−900)·0.0025, where 7<a<9, 6<b<8, 0.3<c<0.5 and 900° C.<TH<1,220° C. Also. method for producing the wear-resistant material and to uses of the material.
Claims
exact text as granted — not AI-modified1 - 32 . (canceled)
33 . Wear-resistant, powder-metallurgically produced material comprising an alloy that contains:
1.5-5.5
wt. %
carbon
0.1-2.0
wt. %
silicon
max. 2.0
wt. %
manganese
3.5-30.0
wt. %
chromium
0.3-10
wt. %
molybdenum
0-10
wt. %
tungsten
0.1-30
wt. %
vanadium
0-12
wt. %
niobium
0.1-12
wt. %
titanium
1.3-3.5
wt. %
nickel
1-6
wt. %
cobalt
0.3-3.5
wt. %
nitrogen
with the remainder being comprised of iron and production-related impurities, wherein the carbon content fulfils the following condition:
CAlloy [ w %]= S 1 +S 2 +S 3
where:
S 1=(Nb+2(Ti+V−0.9))/ a
S 2=(Mo+W/2+Cr− b )/5
S 3 =c +( TH− 900)·0.0025
wherein
7<a<9
6<b<8
0.3<c<0.5
900° C.< TH< 1,220° C.
34 . Wear-resistant material according to claim 32 , wherein the content of vanadium is less than 11.5 wt. %.
35 . Wear-resistant material according to claim 32 wherein the alloy comprises:
2.0-2.5
wt. %
carbon
max. 1.0
wt. %
silicon
max. 0.6
wt. %
manganese
12.0-14.0
wt. %
chromium
1.0-2.0
wt. %
molybdenum
1.1-4.2
wt. %
vanadium
2.0-3.5
wt. %
nickel
1.0-6.0
wt. %
cobalt
0.3-3.5
wt. %
nitrogen.
36 . Wear-resistant material according to claim 32 , wherein the nickel content is between 1.5 and 3.0 wt. %.
37 . Wear-resistant material according to claim 32 , wherein the nickel content is between 1.3 and 2.0 wt. %.
38 . Wear-resistant material according to claim 32 , wherein the nickel content is between 2.0 and 3.5 wt. %.
39 . Wear-resistant material according to claim 32 , wherein the alloy additionally has 1-6 wt. % Co.
CAlloy [ w %]= S 1 +S 2 K+S 3 is fulfilled, wherein S 2 K =(Mo+W/2+Cr− b− 12)/5 with 6 <b <8 and Cr>12.
40 . Method for producing a wear-resistant material according to claim 32 , wherein a melt is produced, and then the melt is further processed by means of one of the following steps:
Atomization of the melt into a powder; Spray compaction of the melt; and Casting the melt into a semi-finished product, and processing the semi-finished product for producing power chips.
41 . Method according to claim 39 , wherein the powder is compacted into one of a semi-finished product or end product.
42 . Method according to claim 40 , wherein the compacting is selected from the group comprising: cold isostatic pressing, uniaxial pressing, extrusion, powder forging, hot isostatic pressing, diffusion alloying, and sintering.
43 . Method according to claim 39 , wherein the powder is further processed by means of thermal injection.
44 . Method according to claim 40 , wherein one of a semi-finished product or an end product is heated to the hardening temperature and subsequently one of quenched or cooled.
45 . Method according to claim 43 , wherein quenching is selected from the group comprising: quenching in an oil bath, salt bath or polymer bath, quenching in a fluidized bed or drizzle, and low and high pressure gas quenching.
46 . Method according to claim 43 , wherein one of a semi-finished product or end product is cooled from the hardening temperature by one of the following steps: cooling in slightly moving air, cooling in static air, oven cooling with a standard atmosphere or inert gas, and cooling in an HIP system.
47 . Method according to claim 43 , wherein the cooling is continuous and is interrupted by isothermal maintenance.
48 . Method according to claim 43 , wherein after the cooling from the hardening temperature, performing the step of tempering in the temperature range from 150-750° C. one or more times.
49 . The method of production of one of solid or hollow rolls, solid or segmented rings which are arranged on solid or hollow roll bodies, and thick-walled or compact components, comprising forming the one of solid or hallow rolls, solid or segmented rings, and thick-walled or compact components from the wear-resistant materials of claim 32 .
50 . The method of claim 48 wherein the solid or segmented rings are arranged on one of solid or hollow roll bodies by being shrunk on.
51 . Powder for the production of a wear-resistant material, comprising:
1.5-5.5
wt. %
carbon
0.1-2.0
wt. %
silicon
max. 2.0
wt. %
manganese
3.5-30.0
wt. %
chromium
0.3-10
wt. %
molybdenum
0-10
wt. %
tungsten
0.1-30
wt. %
vanadium
0-12
wt. %
niobium
0.1-12
wt. %
titanium
1.3-3.5
wt. %
nickel
1-6
wt. %
cobalt
0.3-3.5
wt. %
nitrogen
with the remainder being comprised of iron and production-related impurities, wherein the carbon content fulfils the following condition:
CAlloy [ w %]= S 1 +S 2 +S 3
where:
S 1=(Nb+2(Ti+V−0.9))/ a
S 2=(Mo+W/2+Cr− b )/5
S 3= c +( TH− 900)·0.0025
wherein
7<a<9
6<b<8
0.3<c<0.5
900° C.< TH< 1,220° C.
52 . The method of production of a semi-finished product, comprising forming a semi-finished product from the powder according to claim 50 .
53 . The method according to claim 51 , where the semi-finished product is produced by spray compaction.
54 . The method of production of layer element of composite components, comprising forming the powder according to claim 50 , in one of its powder form or as a semi-finished product, into a layer element of composite components.
55 . The method of production of hard material metal matrix composite elements, comprising forming the power according to claim 50 into a matrix powder for hard material metal matrix composite elements.
56 . The wear-resistant material according to claim 33 , wherein the content of the vanadium is less than 9.5 wt. %.
57 . The wear-resistant material according to claim 33 , wherein the content of the vanadium is less than 6.0 wt. %.Join the waitlist — get patent alerts
Track US2008253919A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.