Method for Producing a Shaft for Compressors
AssigneeSiemens Aktiengesellschaft
InventorsRalf Bode, Beate Langenhan
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Abstract
A method for the production of steels is provided. A heat treatment is carried out, in which the steel is hardened in water twice at different high temperatures, and subsequently subjected to an annealing treatment. It has been shown that the steel 26NiCrMoV14-5 has a high subzero toughness. In one aspect, the steel is usable down to a temperature of at least minus 170° C.
Claims17
-4. (canceled)
A method of heat treatment for producing a shaft for compressors from a shaft material following a specified set of steps, comprising:
- a first hardening at a temperature between 920° C. and 960° C.;
- a second hardening at a temperature between 820° C. and 860° C.;
- and
- tempering at a tempering temperature between 620° C. and 660° C.,
- wherein the heat treatment is carried out on a martensitic steel.
A method of heat treatment for producing a shaft for compressors from a shaft material following a specified set of steps, comprising:
- a first hardening at a temperature between 920° C. and 960° C.;
- a second hardening at a temperature between 820° C. and 860° C.;
- and
- tempering at a tempering temperature between 620° C. and 660° C.,
- wherein the heat treatment is carried out on a martensitic steel,
- wherein the steel 26NiCrMoV14-5 is used,
- wherein the quenching in the first hardening and the second hardening occur in water, and
- wherein the steel is usable down to a temperature of at least minus 170° C.
A method of heat treatment for producing a shaft for compressors from a shaft material following a specified set of steps, comprising:
- a first hardening at a temperature between 920° C. and 960° C.;
- a second hardening at a temperature between 820° C. and 860° C.;
- and
- tempering at a tempering temperature between 620° C. and 660° C.,
- wherein the quenching in the first hardening and the second hardening occur in water.
Dependencies are inferred from the claim text.