Method for determining reheat cracking susceptibility
AssigneeNuovo Pignone S.p.A.
InventorsLeonardo Tognarelli, Eugenio Giorni, Marco Romanelli, Marco Manetti
Life of this patent
Estimating the term…
Abstract
System, computer software and method for determining a susceptibility to reheat cracking of a sample of material, which includes a welded area. The method includes measuring a length of the sample, applying a first stress to the sample to achieve a predetermined elongation of the sample, exposing the elongated sample to a predefined heat treatment, applying a second stress to the sample until the sample breaks at least into two different pieces, and determining the susceptibility of the broken sample to reheat cracking.
Claims20
A method for determining a susceptibility of a sample to reheat cracking, the sample being made of at least one material, which includes a welded area, the method comprising:
- measuring a length of the sample;
- applying a first stress to the sample to achieve a predetermined elongation of the sample;
- exposing the elongated sample to a predefined heat treatment;
- applying a second stress to the elongated sample that has been exposed to the predefined heat treatment, until the sample breaks at least into two different pieces;
- and
- determining the susceptibility of the broken sample to reheat cracking.
A system for determining a susceptibility of a sample to reheat cracking, the sample being made of at least one material, which includes a welded area, the system comprising:
- an interface configured
- to receive first data from a length measuring device that measures a length of the sample,
- to receive second data from a stress applying and measuring device configured to apply a first stress to the sample to achieve a predetermined elongation of the sample and to determine a stress in the sample,
- to receive third data from a heat applying device configured to expose the elongated sample to a predefined heat treatment, and
- to receive fourth data from the stress applying and measuring device configured to apply a second stress to the elongated sample that has been exposed to the predefined heat treatment until the sample breaks at least into two different pieces;
- and
- a processor connected to the interface and configured
- to control the length measuring device, the stress applying and measuring device, and the heat applying device, and
- to determine the susceptibility of the broken sample to reheat cracking, based on the first, second, third and fourth data received from the length measuring device, the stress applying and measuring device, and the heat applying device via the interface.
A computer readable medium for storing computer executable instructions, wherein the instructions, when executed by a processor, determine the processor to determine a susceptibility of a sample to reheat cracking, the sample being made of at least one material, which includes a welded area, the instructions comprising:
- measuring a length of the sample;
- applying a first stress to the sample to achieve a predetermined elongation of the sample;
- exposing the elongated sample to a predefined heat treatment;
- applying a second stress to the elongated sample that has been exposed to the predefined heat treatment, until the sample breaks at least into two different pieces;
- and
- determining the susceptibility of the broken sample to reheat cracking.
Dependencies are inferred from the claim text.