Modeling the heat flow in spray formed steel shells for tooling applications
This article concerns a metal spraying process for the manufacture of production tooling at reduced time and cost. Critical to the successful operation of this process is control of the sprayed steel shell temperature to eliminate thermal residual stresses and distortion. A computational model of th...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1797059697773117440 |
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| author | Rayment, T Grant, P |
| author_facet | Rayment, T Grant, P |
| author_sort | Rayment, T |
| collection | OXFORD |
| description | This article concerns a metal spraying process for the manufacture of production tooling at reduced time and cost. Critical to the successful operation of this process is control of the sprayed steel shell temperature to eliminate thermal residual stresses and distortion. A computational model of the transient heat flow in steel shells during spray forming has been developed. The critical data for the distribution of convective heat-transfer coefficient distribution over the shell surface and average spray temperature has been obtained from experiments using embedded calorimeters and process monitoring respectively. Shell average temperature and temperature variance have been investigated using the model, and predictions compared well with experimental measurements obtained using infrared thermal imaging. The wire feed rate was identified as the most suitable control parameter for a closed loop control system to regulate shell surface temperature during manufacture. |
| first_indexed | 2024-03-06T20:07:54Z |
| format | Journal article |
| id | oxford-uuid:2986f646-3484-4635-afe3-c90e98f59a3f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:07:54Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:2986f646-3484-4635-afe3-c90e98f59a3f2022-03-26T12:19:42ZModeling the heat flow in spray formed steel shells for tooling applicationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2986f646-3484-4635-afe3-c90e98f59a3fEnglishSymplectic Elements at Oxford2006Rayment, TGrant, PThis article concerns a metal spraying process for the manufacture of production tooling at reduced time and cost. Critical to the successful operation of this process is control of the sprayed steel shell temperature to eliminate thermal residual stresses and distortion. A computational model of the transient heat flow in steel shells during spray forming has been developed. The critical data for the distribution of convective heat-transfer coefficient distribution over the shell surface and average spray temperature has been obtained from experiments using embedded calorimeters and process monitoring respectively. Shell average temperature and temperature variance have been investigated using the model, and predictions compared well with experimental measurements obtained using infrared thermal imaging. The wire feed rate was identified as the most suitable control parameter for a closed loop control system to regulate shell surface temperature during manufacture. |
| spellingShingle | Rayment, T Grant, P Modeling the heat flow in spray formed steel shells for tooling applications |
| title | Modeling the heat flow in spray formed steel shells for tooling applications |
| title_full | Modeling the heat flow in spray formed steel shells for tooling applications |
| title_fullStr | Modeling the heat flow in spray formed steel shells for tooling applications |
| title_full_unstemmed | Modeling the heat flow in spray formed steel shells for tooling applications |
| title_short | Modeling the heat flow in spray formed steel shells for tooling applications |
| title_sort | modeling the heat flow in spray formed steel shells for tooling applications |
| work_keys_str_mv | AT raymentt modelingtheheatflowinsprayformedsteelshellsfortoolingapplications AT grantp modelingtheheatflowinsprayformedsteelshellsfortoolingapplications |