ES427261A1 - A procedure to form machines and molds of foundry. (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure to form machines and molds of foundry. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES427261A1 ES427261A1 ES427261A ES427261A ES427261A1 ES 427261 A1 ES427261 A1 ES 427261A1 ES 427261 A ES427261 A ES 427261A ES 427261 A ES427261 A ES 427261A ES 427261 A1 ES427261 A1 ES 427261A1
- Authority
- ES
- Spain
- Prior art keywords
- resin
- sand
- urea
- casting
- mold
- 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
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
A method for forming casting cores and molds, characterized by the operations of: 1) contacting a hot pattern with an easily flowable resin coated sand, consisting essentially of a) sand particles coated with from about 1% to 8%, relative to the weight of the sand, of phenol-formaldehyde novolac resin; b) a curing agent, and c) from about 1% to about the weight of the phenol-formaldehyde novolak resin, of a urea compound selected from the group consisting of urea, ethylene-urea, propylene-urea and its mixtures; 2) keeping the resin-coated sand against the hot pattern to bind together a part of the resin-coated sand particles to form a casting mold or core of suitable thickness; 3) separating the non-agglutinated particles of resin-coated sand from the bonded sand particles forming the casting mold or core; 4) curing the mold or casting male, the hot pattern having a temperature of from about 177ºC to 317º c; and 5) removing the mold or casting male from the pattern. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES427261A ES427261A1 (en) | 1974-06-14 | 1974-06-14 | A procedure to form machines and molds of foundry. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES427261A ES427261A1 (en) | 1974-06-14 | 1974-06-14 | A procedure to form machines and molds of foundry. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES427261A1 true ES427261A1 (en) | 1976-07-01 |
Family
ID=8466940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES427261A Expired ES427261A1 (en) | 1974-06-14 | 1974-06-14 | A procedure to form machines and molds of foundry. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES427261A1 (en) |
-
1974
- 1974-06-14 ES ES427261A patent/ES427261A1/en not_active Expired
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