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crucible furnaces

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001908
EISBN: 978-1-62708-235-8
... under investigation), intermetallic compounds (Fe-Al-Mn-Si combinations) form locally or throughout the melt in the form of grains or needlelike crystals due to excessively low temperature in the crucible holding furnace. 2 This was the situation noted at the manufacturer. These inclusions were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001598
EISBN: 978-1-62708-232-7
.... This was accomplished by welding a short platinum tube to the bottom of the melter. The end of the new tube was pinched shut and seam welded closed. All welds were liquid penetrant tested, and no indications were observed. The vessel was then placed in an induction furnace contained within a graphite crucible. Alumina...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001490
EISBN: 978-1-62708-232-7
...Abstract Abstract A steel pot used as crucible in a magnesium alloy foundry developed a leak that resulted in a fire and caused extensive damage. Hypotheses as to the cause of the leak included a defect in the pot, overuse, overheating, and poor foundry practices. Scanning electron microscopy...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
.... The requisite skill level is comparable to that of the OES technique. Analyses of metal samples to determine nitrogen, oxygen, and hydrogen contents are accomplished by using inert gas fusion techniques. In this technique, a solid specimen is heated in a graphite crucible in a fusion furnace under an inert...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... to ASTM International A27, grade 65-35; properties from an 8 × 13 × 18 cm (3 × 5 × 7 in.) keel block; basic electric steel, deoxidized with 1.1 kg (2.5 lb) of aluminum per ton of molten metal. (a) Annealed at 925 °C (1700 °F) for 12 h, furnace cooled. Microstructure: 30% fine pearlite, 70% primary...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... section on the importance of the scheduling of production in basic oxygen furnace steelmaking plants, as well as another section on the effects of operating variables on lining life. “Operational consistency and control of the melting process are key ingredients in meeting the demands of modern-day...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... and steady or intermittent flame impingement on the furnace walls may favor an environment that forms sodium and potassium pyrosulfates and has a melting point below 425 °C (800 °F). Chlorides increase the corrosion rate. Metal attack occurs along the crown of the tube and may extend uniformly across...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1