Casting wax
A blended wax for lost wax casting comprises a blend of three or more paraffinic or similarly petrochemically derived wax cuts. Preferably each of the three or more wax cuts have a different melting point, the melting point of each wax cut differing from the melting point of another wax cut by between 3 and 6 deg. C.
1. A blended wax comprising a plurality of paraffinic or petrochemically derived wax grades, wherein the plurality of wax grades comprises at least a first wax grade having a first melting point, a second wax grade having a second melting point that differs from the first melting point by 3-6° C., and a third wax grade having a third melting point that differs from the second melting point by 3-6° C., wherein fillers comprise 20 percent or less by weight of the total blended wax.
2. The blended wax of claim 1 , wherein the plurality of wax grades comprises 15 to 40 percent by weight of the total blended wax.
3. The blended wax of claim 1 , wherein the blended wax has an enthalpy of crystallization that ranges from 173.2 J/g to 206.2 J/g.
4. The blended wax of claim 1 , wherein the second melting point differs from the first melting point by 4-6° C. and the third melting point differs from the second melting point by 4-6° C.
5. The blended wax of claim 1 , wherein the plurality of wax grades are formulated wherein the ratio of each wax grade relative to another wax grade is between 1:1 and 11:1.
6. The blended wax of claim 1 , wherein the plurality of wax grades further comprises a fourth wax grade having a fourth melting point.
7. The blended wax of claim 6 , wherein the fourth melting point differs from the third melting point by 3-6° C.
8. The blended wax of claim 7 , wherein the fourth melting point differs from the third melting point by 4-6° C.
9. A wax blend comprising:
a plurality of paraffinic wax grades, wherein the plurality of wax grades comprises at least a first wax grade having a first melting point, a second wax grade having a second melting point that differs from the first melting point by 3-6° C., and a third wax grade having a third melting point that differs from the second melting point by 3-6° C.;
at least one micro-wax present in an amount of 1 to 16 percent by weight of the wax blend; and
at least one resinous material present in an amount of 20 to 50 percent of by weight of the wax blend.
10. The wax blend of claim 9 , wherein fillers comprise 20 percent or less by weight of the wax blend.
11. The wax blend of claim 9 , further comprising one or more polymers.
12. The wax blend of claim 9 , wherein the at least one resinous material is a C5 hydrocarbon.
13. The wax blend of claim 12 , wherein the at least one resinous material comprises a first C5 hydrocarbon and a second C5 hydrocarbon.
14. The wax blend of claim 9 , wherein the plurality of wax grades comprises 15 to 40 percent by weight of the wax blend.
15. A wax blend comprising:
a plurality of paraffinic wax grades, wherein the plurality of wax grades comprises at least a first wax grade having a first melting point, a second wax grade having a second melting point that is greater than the first melting point by 3-6° C., a third wax grade having a third melting point that is greater than the second melting point by 3-6° C., and a fourth wax grade having a fourth melting point that is greater than the third melting point by 3-6° C.,
wherein fillers comprise 20 percent or less by weight of the wax blend.
16. The wax blend of claim 15 , further comprising at least one micro-wax present in an amount of 1 to 16 percent by weight of the wax blend.
17. The wax blend of claim 15 , further comprising at least one resinous material present in an amount of 20 to 50 percent of by weight of the wax blend.
18. The wax blend of claim 15 , wherein the plurality of wax grades comprises 15 to 40 percent by weight of the wax blend.
19. The wax blend of claim 17 , wherein the at least one resinous material comprises a first C5 hydrocarbon and a second C5 hydrocarbon.
20. The wax blend of claim 16 , wherein the at least one micro-wax comprises a first micro-wax and a second micro-wax.
21. A method of investment casting, comprising
utilizing the blended wax according to claim 1 to form a wax pattern,
investing the wax pattern with a medium to form a mold, and
removing the wax pattern from the mold.
22. A method of investment casting, comprising
utilizing the wax blend according to claim 9 to form a wax pattern,
investing the wax pattern with a medium to form a mold, and
removing the wax pattern from the mold.
23. A method of investment casting, comprising
utilizing the blended wax according to claim 15 to form a wax pattern,
investing the wax pattern with a medium to form a mold, and
removing the wax pattern from the mold.