PL40263B1 - - Google Patents
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- Publication number
- PL40263B1 PL40263B1 PL40263A PL4026357A PL40263B1 PL 40263 B1 PL40263 B1 PL 40263B1 PL 40263 A PL40263 A PL 40263A PL 4026357 A PL4026357 A PL 4026357A PL 40263 B1 PL40263 B1 PL 40263B1
- Authority
- PL
- Poland
- Prior art keywords
- mixture
- casting molds
- molds
- flame
- combustible
- Prior art date
Links
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000010285 flame spraying Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 3
- 239000000463 material Substances 0.000 claims 1
- 239000003110 molding sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Description
Opublikowano dnia 7 grudnia 1957 r. sa2*3i «\ % \'* Wfc! ^3f 99B9Rt3|tilfc»l j POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 40263 Politechnika Wroclawska Zaklad Odlewnictwa *) Wroclaw, Polska 34^3/00 Sposób czernienia form odlewniczych przez plomieniowe spryskiwanie Patent trwa od dnia 18 marca 1957 r.Czernienie form odlewniczych sposobem plo¬ mieniowego spryskiwania polega na pokrywaniu powierzchni wewnetrznej form palaca sie mieszan¬ ka rozpylana strumieniem sprezonego gazu.Celem jest zwiekszenie wytrzymalosci powierz¬ chni form i zmniejszenie przypalen masy formier¬ skiej do odlewów z równoczesnym wyeliminowa¬ niem podsuszania form. Mieszanka w postaci roz¬ tworu lub zawiesiny substancji organicznych w cieczy palnej lub w stanie suchego proszku zostaje wydmuchana sprezonym gazem i zapalona.Czastki substancji podlegaja na drodze miedzy rozpylaczem a forma zmiekczeniu lub czesciowe¬ mu spieczeniu. Natrafiajac na drodze swego lotu zimna forme przywieraja do ziam piasku, ochla¬ dzajac sie ponizej punktu swego zaplonu i krzepna wiazac ziarna piasku formierskiego.*) Wlasciciel patentu oswiadczyl, ze twórca wy¬ nalazku jest inz. mgr Andrzej Bydalek. PLPublished December 7, 1957. sa2 * 3i «\% \ '* Wfc! ^ 3f 99B9Rt3 | tilfc »lj POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 40263 Wroclaw University of Technology Zaklad Odlewnictwa *) Wroclaw, Poland 34 ^ 3/00 Method of blackening of casting molds by flame spraying The patent lasts from March 18, 1957. alternating spraying consists in covering the inner surface of the molds with a flammable mixture sprayed with a stream of compressed gas. The purpose is to increase the strength of the surfaces of the molds and reduce burns of the molding sand for casting while eliminating drying of the molds. The mixture in the form of a solution or suspension of organic substances in a flammable liquid or in a dry powder state is blown out with compressed gas and ignited. The particles of the substance are softened or partially sintered on the way between the sprayer and the mold. On the way of their flight, the cold form adheres to the sand, cooling below its ignition point and firmly binding the grains of molding sand. *) The owner of the patent stated that the inventor was Eng. Andrzej Bydalek, MSc. PL
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL40263B1 true PL40263B1 (en) | 1957-06-15 |
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