ES343433A1 - Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores - Google Patents

Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores

Info

Publication number
ES343433A1
ES343433A1 ES343433A ES343433A ES343433A1 ES 343433 A1 ES343433 A1 ES 343433A1 ES 343433 A ES343433 A ES 343433A ES 343433 A ES343433 A ES 343433A ES 343433 A1 ES343433 A1 ES 343433A1
Authority
ES
Spain
Prior art keywords
core
box
foundry
mould
mixes
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
ES343433A
Other languages
Spanish (es)
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.)
Hexion UK Ltd
Original Assignee
Borden Chemical UK Ltd
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 Borden Chemical UK Ltd filed Critical Borden Chemical UK Ltd
Publication of ES343433A1 publication Critical patent/ES343433A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • 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
    • B22C1/20—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 of organic agents
    • B22C1/22—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 of organic agents of resins or rosins
    • B22C1/2233—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 of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2273—Polyurethanes; Polyisocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

Foundry moulds and cores are prepared by mixing and charging to a mould or core-box a moulding mixture comprising a granular refractory material and 0À5 to 5 per cent by weight of a binder comprising a liquid polyol of hydroxy value 100 to 600 mg. KOH/gm, a polyisocyanate in an amount sufficient to provide 0À8 to 1À5 isocyanate groups per OH group of the polyol and an amount of an accelerator sufficient to cause the moulding mixture to set within 5 minutes at 25 C. and finally allowing the moulding mixture to set while in contact with the mould or core-box. The mixture may be prepared from two separate sand sub-mixes. The mould or core-box may be warmed before the introduction of the foundry mix. In examples various foundry mixes are discharged into a cylindrical 2-inch diameter core-box and rammed three times with a 14 lb. weight dropped from a height of 2 inches before setting or alternatively the mixes may be charged to the cartridge of an air-operated core blower and blown into a mould or core-box.
ES343433A 1966-07-26 1967-07-26 Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores Expired ES343433A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33658/66A GB1136307A (en) 1966-07-26 1966-07-26 Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores

Publications (1)

Publication Number Publication Date
ES343433A1 true ES343433A1 (en) 1968-09-01

Family

ID=10355757

Family Applications (1)

Application Number Title Priority Date Filing Date
ES343433A Expired ES343433A1 (en) 1966-07-26 1967-07-26 Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores

Country Status (2)

Country Link
ES (1) ES343433A1 (en)
GB (1) GB1136307A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7407505L (en) 1974-06-07 1975-12-08 Bofors Ab PROCEDURE FOR THE MANUFACTURE OF POLYURETHANE BONDED MATERIALS BODY BODIES.
US4124556A (en) * 1977-03-16 1978-11-07 Ashland Oil, Inc. Moulding composition containing (a) silane additive (b) iron oxide and (c) polyurethane resin and method for preparing shaped foundry products
GB2088886B (en) * 1980-10-06 1984-07-18 Mitsubishi Petrochemical Co Binder composition for foundry molds or cores
AU567107B2 (en) * 1982-11-12 1987-11-12 General Kinematics Corporation Mould for metal casting using vibration and gravity head

Also Published As

Publication number Publication date
GB1136307A (en) 1968-12-11

Similar Documents

Publication Publication Date Title
ES8405297A1 (en) Foundry moulds and cores.
GB1065377A (en) Moulding of exothermic compositions in foundry moulds
GB1369445A (en) Method and apparatus for preparing foundry moulds and cores
ES343433A1 (en) Improvements in or relating to foundry moulding compositions and to a process for theproduction of foundry cores
ES476094A1 (en) Novel sand/silicate compositions for foundry molds/cores
GB1312567A (en) Foundry core binders and foundry process
GB1133255A (en) Making foundry cores and moulds
ES8404778A1 (en) Method and apparatus for blowing cores etc.
GB1308445A (en) Manufacture of foundry mixtures in the production of foundry moulds and cores
US3776992A (en) Method for producing sleeves or sheets for feeder heads formed in metal casting and an apparatus therefor
ES447216A1 (en) Apparatus and method for manufacturing cores and molds with static mixer stage
GB1348160A (en) Moulding sand mix
GB1203943A (en) Foundry moulds and mould components, and the manufacture thereof
GB1533357A (en) Process for preparing a sand composition for use in making cores and moulds
GB1253091A (en)
SU1414495A1 (en) Method of producing castings from cast iron with globular graphite in vacuumed moulds
GB786898A (en) Improvements in or relating to shell moulding
GB1427937A (en) Making foundry cores and moulds
GB714728A (en) Improvements in or relating to moulding masses for foundry purposes and a process for producing such mass
GB774798A (en) Improvements in or relating to the manufacture of shell moulds for casting metal
GB2040295B (en) Moulding sand mixture for the manufacture of moulds and cores
ES8305230A1 (en) Compositions for silicate-bonded foundry moulds and cores.
EP0012927A1 (en) Binder, curable at room temperature, for solid particles, especially moulding sand
GB735564A (en) Improvements in synthetic resin binders for making foundry moulding mixtures and in such mixtures
ES447218A1 (en) Apparatus and method for manufacturing cores and molds