GB879214A - Improvements in processes for hardening sand moulds and cores - Google Patents

Improvements in processes for hardening sand moulds and cores

Info

Publication number
GB879214A
GB879214A GB4311/60A GB431160A GB879214A GB 879214 A GB879214 A GB 879214A GB 4311/60 A GB4311/60 A GB 4311/60A GB 431160 A GB431160 A GB 431160A GB 879214 A GB879214 A GB 879214A
Authority
GB
United Kingdom
Prior art keywords
processes
cores
hardening sand
sand moulds
koch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4311/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB879214A publication Critical patent/GB879214A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/162—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents use of a gaseous treating agent for hardening the binder

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

879,214. Moulding-processes. KOCH, H., and KOCH, R. Feb. 8, 1960 [Feb. 25, 1959], No. 4311/60. Addition to 842,054. Class 83 (1). In the CO 2 process there is disposed in the vicinity of an exit hole provided for the emergence of CO 2 from an already shaped mould or core, a material containing an indicator capable of responding visibly to CO 2 . Litmus paper or other strip material impregnated with an indicator may be placed in front of the exit hole.
GB4311/60A 1959-02-25 1960-02-08 Improvements in processes for hardening sand moulds and cores Expired GB879214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE879214X 1959-02-25

Publications (1)

Publication Number Publication Date
GB879214A true GB879214A (en) 1961-10-04

Family

ID=6818892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4311/60A Expired GB879214A (en) 1959-02-25 1960-02-08 Improvements in processes for hardening sand moulds and cores

Country Status (1)

Country Link
GB (1) GB879214A (en)

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