Evaluation of materials and surface treatments for the DWPF melter pour spout bellows protective liner

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Description

A study was undertaken to evaluate a variety of materials and coatings for the DWPF pour spout bellows liner. The intent was to identify materials that would minimize or eliminate adherence of glass on the bellows liner wall and help minimize possible pluggage during glass pouring operations in DWPF. Glass has been observed adhering to the current bellow`s liner, which is made of 304L stainless steel. Materials were identified which successfully allowed molten glass to hit these surfaces and not adhere. Results of this study suggest that if these materials are used in the pouring system glass could still fall ... continued below

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24 p.

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Imrich, K.J.; Bickford, D.F. & Wicks, G.G. June 27, 1997.

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Description

A study was undertaken to evaluate a variety of materials and coatings for the DWPF pour spout bellows liner. The intent was to identify materials that would minimize or eliminate adherence of glass on the bellows liner wall and help minimize possible pluggage during glass pouring operations in DWPF. Glass has been observed adhering to the current bellow`s liner, which is made of 304L stainless steel. Materials were identified which successfully allowed molten glass to hit these surfaces and not adhere. Results of this study suggest that if these materials are used in the pouring system glass could still fall into the canister without appreciable plugging, even if an unstable glass stream is produced. The materials should next be evaluated under the most realistic DWPF conditions possible. Other findings of this study include the following: (1) increasing coupon thickness produced a favorable increase in the glass sticking temperature; (2) highly polished surfaces, with the exception of the oxygen-free copper coupon coated with Armoloy dense chromium, did not produce a significant improvement in the glass sticking temperature, increasing angle of contact of the coupon to the falling glass did not yield a significant performance improvement; (3) electroplating with gold and silver and various diffusion coatings did not produce a significant increase in the glass sticking temperature. However, they may provide added oxidation and corrosion resistance for copper and bronze liners. Boron nitride coatings delaminated immediately after contact with the molten glass.

Physical Description

24 p.

Notes

INIS; OSTI as DE97053990

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  • Other Information: PBD: 27 Jun 1997

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  • Other: DE97053990
  • Report No.: WSRC-TR--97-0113
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/578483 | External Link
  • Office of Scientific & Technical Information Report Number: 578483
  • Archival Resource Key: ark:/67531/metadc689649

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Creation Date

  • June 27, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 9, 2016, 8:28 p.m.

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Imrich, K.J.; Bickford, D.F. & Wicks, G.G. Evaluation of materials and surface treatments for the DWPF melter pour spout bellows protective liner, report, June 27, 1997; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc689649/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.