US1885094A - Mold wash - Google Patents
Mold wash Download PDFInfo
- Publication number
- US1885094A US1885094A US425906A US42590630A US1885094A US 1885094 A US1885094 A US 1885094A US 425906 A US425906 A US 425906A US 42590630 A US42590630 A US 42590630A US 1885094 A US1885094 A US 1885094A
- Authority
- US
- United States
- Prior art keywords
- mold
- mold wash
- molds
- wash
- soda
- 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 - Lifetime
Links
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 16
- 229910000029 sodium carbonate Inorganic materials 0.000 description 8
- 235000017550 sodium carbonate Nutrition 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000001339 alkali metal compounds Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- -1 for example Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Definitions
- This invention relates to the casting of metal and is particularly'directed to the casting of metal in metal molds such as ingot molds.
- an alkali metal compound Preferably I employ the carbonate of an alkali metal, for example, soda-ash.
- the compound may be painted on the mold walls at any temperature below the fusing point of the compound and still be effective. Therefore, for all practical purposes there is no top limit for the temperature at which the molds may be painted.
- Potassium carbonate may be employed, although soda-ash is preferred because of its lower cost. Caustic soda may also be used, although it is more difficult to handle.
- a mold wash for treating the surface of metallic molds comprising an alkali metal compound and graphite.
- a mold wash for treating the surface of metallic molds comprising soda ash and graphite.
- a mold wash fortreating the surface of metallic molds consisting essentially of graphite having a small amount of an alkali metal compound added thereto.
- a mold Wash for treating the surface of metallic molds consisting essentially of graphite having a small amount of soda ash added thereto.
- a mold Wash for treating the surface of metallic molds consisting of soda ash, oxide of silica, oxide of iron, oxide of alumina and graphite.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
Patented Oct. 25, 1932 UNITED STES PATENT FFICE KARL W. GRANT, OF YOUNGSTOWN, onro, ASSIGNOR To THE REPDBLIQ STEEL conso- RATION, or YoUNGSTowN, OHIO, A oonronATIoN or NEW JERSEY MOLD WASH No Drawing.
This invention relates to the casting of metal and is particularly'directed to the casting of metal in metal molds such as ingot molds.
In casting molten steel into ingot form difliculty is frequently encountered during teeming by reason of steel splattering and sticking to the mold walls, forming scabs on the ingots. Various mold washes have been proposed with the view of obtaining a sur face smoothness which would prevent the splatters from sticking. However, such washes have proved decidedly expensive. Various mold washes in use are also undesirable because, if the molds are too hot when painted, the washes are destroyed by the heat and the splatters stick; whereas if the molds are too cold, they do not dry and cause violent agitation of the metal during teeming. It frequently happens that the molds are outside of the narrow temperature range available in using present mold washes, and
in such case difficulty and delays are encomprising an alkali metal compound. Preferably I employ the carbonate of an alkali metal, for example, soda-ash. The compound may be painted on the mold walls at any temperature below the fusing point of the compound and still be effective. Therefore, for all practical purposes there is no top limit for the temperature at which the molds may be painted.
Potassium carbonate may be employed, although soda-ash is preferred because of its lower cost. Caustic soda may also be used, although it is more difficult to handle.
When my improved mold wash is struck by a splatter the alkali metal compound is fused, thus preventing the splatter from adhering tightly to the mold wall. At the same time a small amount of gas is probably generated, creating a slight local pressure tending to throw the splatter off the Application filed February 4, 1930. Serial No. 425,906.
Certain materials, for example, lime, are not as satisfactory on this account. Calcium carbonate,-if used, would tend to evolve carbon dioxide when heated, but the residue would be calcium oxide which is not readily fusible, remains in the metal, and upon solidification of the metal is present as a very objection able type of non-metallic inclusion.
I have obtained satisfactory results by a mold wash comprising5 pounds of soda-ash in a vehicle made up of 80 to 90 pounds of mold wash compound in 50 gallons of water. A typical analysis of av mold wash compound which I have successfully used is SiO 3. 80 Combined oxides of iron and alumina 2. 90
The proportions given above are for applying the moldv wash in two coats. Where the molds are too cold to dry in the time avail able if painted twice, I have successfully used a single coating of 5 pounds of soda-ash and 120 pounds of mold wash compound in 50 gallons of water.
It is undesirable to use toolarge an amount of soda-ash. I have found that 15 pounds to the barrel of water is excessive.
The above description gives, by way of example, only a preferred embodiment of the invention. It will be understood that the ve hicle above described is only one of many which may be used, and that the invention is not limited to the specific forms above given but may be otherwise embodied or practiced within the scope of the following claims.
I claim:
1. A mold wash for treating the surface of metallic molds comprising an alkali metal compound and graphite.
2. A mold wash for treating the surface of metallic molds comprising soda ash and graphite.
3. A mold wash fortreating the surface of metallic molds consisting essentially of graphite having a small amount of an alkali metal compound added thereto.
4. .A mold wash for treating the surface of metallic molds consisting essentialy of graphite having a small amount of a carbonate of an alkali metal added thereto.
5. A mold Wash for treating the surface of metallic molds consisting essentially of graphite having a small amount of soda ash added thereto.
6. A mold Wash for treating the surface of metallic molds consisting of soda ash, oxide of silica, oxide of iron, oxide of alumina and graphite.
In testimony whereof I have hereunto set my hand.
KARL W. GRANT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US425906A US1885094A (en) | 1930-02-04 | 1930-02-04 | Mold wash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US425906A US1885094A (en) | 1930-02-04 | 1930-02-04 | Mold wash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1885094A true US1885094A (en) | 1932-10-25 |
Family
ID=23688527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US425906A Expired - Lifetime US1885094A (en) | 1930-02-04 | 1930-02-04 | Mold wash |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1885094A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2580524A (en) * | 1948-01-29 | 1952-01-01 | Daussan Henri Jean | Products for coating molds and ingot molds |
| US2786771A (en) * | 1952-07-07 | 1957-03-26 | Eaton Mfg Co | Core wash |
-
1930
- 1930-02-04 US US425906A patent/US1885094A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2580524A (en) * | 1948-01-29 | 1952-01-01 | Daussan Henri Jean | Products for coating molds and ingot molds |
| US2786771A (en) * | 1952-07-07 | 1957-03-26 | Eaton Mfg Co | Core wash |
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