1. A processing machine for the processing of workpieces made at least partially of wood, wooden materials, plastics, metal or the like, comprising:
at least one load-bearing machine part and at least one processing unit connected with the load-bearing machine part, wherein the load-bearing machine part is made at least in sections from concrete, wherein:
the concrete of the load-bearing machine part is formed by a concrete having at least one of a water binder ratio of at most 0.30 and a bending tensile strength of at least 15 MPa.
2. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a water binder ratio of at most 0.25.
3. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a bending tensile strength of at least 20 MPa.
4. The processing machine of claim 1, wherein the concrete of the load-bearing machine part may be free of bar-shaped reinforcement inserts.
5. The processing machine of claim 1, wherein the concrete of the load-bearing machine part comprises fibers.
6. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a compressive strength of at least 90 MPa.
7. The processing machine of claim 1, wherein the load-bearing machine part forms a machine part chosen from the group consisting of machine bed, support cantilevers, gantry beam, console, base support and casing.
8. A method of production of a processing machine according to claim 1, comprising the following steps:
producing a load-bearing machine part from concrete having a water-binder ratio of at most 0.30,
heat treating the concrete, and
joining the load-bearing machine part with a processing unit.
9. The method of claim 8, wherein the degree of shrinkage of the concrete after the heat treatment is at least 90% of the final degree of shrinkage according to DIN 1045-1.
10. The method of claim 8 or 9, wherein the step of heat treating is performed at a temperature in the range of 70 to 120\xb0 C.
11. The method of claims 8 or 9, wherein the step of heat treating is preformed for a period of at least 24 hours.
12. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a water binder ratio of at most 0.20.
13. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a bending tensile strength of at least 25 MPa.
14. The processing machine of claim 1, wherein the fibers are selected from the group consisting of metal fibers andor synthetic fibers.
15. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a compressive strength of at least 120 MPa.
16. The processing machine of claim 1, wherein the concrete of the load-bearing machine part has a compressive strength of at least 150 MPa.
17. The method of production of a processing machine according to claim 8 wherein the load-bearing machine part formed from concrete has a water-binder ratio of at most 0.25.
18. The method of claim 8, wherein the degree of shrinkage of the concrete after the heat treatment is at least 95% of the final degree of shrinkage according to DIN 1045-1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A scroll component comprising:
a porous scroll form having involute and base plate portions, said scroll form comprising metal powder;
a porous hub form comprising metal powder, said hub form positioned in coupling proximity with the scroll form; and
a sinter joint disposed between the scroll form and the hub form to form a monolithic scroll component.
2. The scroll component according to claim 1 further comprising binder disposed about the metal powder.
3. The scroll component according to claim 2 wherein the metal powder comprises elements selected from the group of carbon, nickel, molybdenum, chromium, copper and mixtures thereof.
4. The scroll component according to claim 1 wherein the metal powder comprises iron.
5. The scroll component according to claim 4 wherein the metal powder is an iron powder having a mean diameter greater than 5 micrometers.
6. The scroll component according to claim 5 wherein the metal powder comprises metal powder having elements selected from the group of 0.7-3.5% carbon, 0-10% copper, 0-5% nickel, 0-5% molybdenum, 0-2% chromium and mixtures thereof.
7. The scroll component according to claim 1 wherein said scroll form comprises at least 90% per volume pearlite.
8. The scroll component according to claim 1 wherein said scroll form comprises less than about 20% free graphite.
9. The scroll component according to claim 8 wherein said scroll form comprises about 12% free graphite.
10. The scroll component according to claim 1 wherein said metal powder comprises an iron powder having a plurality of morphologies having at least two average diameters.
11. The scroll component according to claim 1 wherein said metal powder comprises metal coated graphite particles.
12. The scroll component according to claim 11 wherein said metal coated graphite particles comprise graphite particles coated with copper.
13. The scroll component according to claim 1 wherein said metallic powder comprises magnesium sulfide.
14. The scroll component according to claim 1 wherein the involute portion comprises a machined surface.
15. The scroll component according to claim 1 said scroll form has a density of more than about 6.8 gmcm3.
16. The scroll component according to claim 1 further comprising a brazing material disposed between the scroll form and the hub form.
17. The scroll component according to claim 1 wherein the hub comprises a polymer.
18. The scroll component according to claim 16 wherein brazing material comprises:
about 30-50% copper;
about 10-20% manganese;
about 3-25% iron;
about 0.5-4% silicon;
about 0.5-2% boron; and
balance is nickel.
19. A scroll component comprising:
a scroll form having involute and base plate portions, said scroll form comprising metal powder;
a hub form comprising metal powder;
a sinter joint disposed between the scroll form and the hub form to form a monolithic scroll component; and
a polymer disposed within pores defined by the scroll form.
20. The scroll component according to claim 19 comprising a machined surface defined on the involute portion.
21. The scroll component according to claim 20 wherein the polymer disposed within pores defined by the scroll form is present after sintering of the scroll form and the hub form.
22. The scroll component according to claim 21 further comprising binder disposed within pores defined by the metal powder.
23. The scroll component according to claim 22 wherein said metal powder comprises iron.
24. The scroll component according to claim 23 further comprising graphite particles.
25. The scroll component according to claim 23 wherein the metal powder is an iron powder having a mean diameter of greater than 5 micrometers.
26. A scroll component subassembly comprising:
a powder metal scroll member;
a powder metal hub form, said hub form being in contact with the base portion;
a sinter joint between the scroll member and hub form; and
a polymer disposed within pores defined by the scroll member.
27. The scroll component according to claim 26 wherein the polymer disposed within pores defined by the scroll member is present after the sintering of the scroll member and the hub form.
28. The scroll component according to claim 27 further comprising a machined surface on the powder metal scroll member.
29. The scroll component according to claim 28 wherein said scroll member has a density of more than about 6.8 gmcm3.
30. The scroll component according to claim 29 further comprising a brazing material disposed between the scroll member and the hub form.
31. The scroll component according to claim 30 wherein the metal powder comprises metal powder having elements selected from the group of 0.7-3.5% carbon, 0-10% copper, 0-5% nickel, 0-5% molybdenum, 0-2% chromium and mixtures thereof.
32. The scroll component according to claim 31 wherein said scroll member comprises at least 90% per volume pearlite.
33. The scroll component according to claim 32 wherein said scroll member comprises less than 20% free graphite.