US1571014A - Mold compound - Google Patents
Mold compound Download PDFInfo
- Publication number
- US1571014A US1571014A US33287A US3328725A US1571014A US 1571014 A US1571014 A US 1571014A US 33287 A US33287 A US 33287A US 3328725 A US3328725 A US 3328725A US 1571014 A US1571014 A US 1571014A
- Authority
- US
- United States
- Prior art keywords
- sand
- slag
- foundry
- comminuted
- molds
- 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
- 150000001875 compounds Chemical class 0.000 title description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 23
- 239000004576 sand Substances 0.000 description 17
- 239000002893 slag Substances 0.000 description 14
- 239000004927 clay Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Definitions
- This invention relates. to a mold or core material.
- the object, of the invention is to revivify foundry sand by the addition of comminuted slag such as may be procured by the operation of a blast furnace. open hearth furnace or the like.
- the slag is crushed or ground into fine partic es by any suitable apparatus and mixed with the inert sand together with a small quantitv of fire clav, the latter ingredient constituting a binding medium so that the compound mav be formed into various shapes as required in foundry operations.
- the invention contemplates a compound for forming molds having a high degree of permeability to the passage of gases evolved in the casting. operation and. furthermore. provides a material havinghigh refractorv properties. which prevent the material from burning fast to the castings and avoids the formation of scabs thereon.
- a compound suitable for formm foundry molds comprising commmute slag, inert foundry'sand and fire clay.
- a compound suitable for formmgi foundry molds comprising comminuted metallurgical slag, silica sand and fire clay.
- a compound suitable for forming foundry molds comprising about four parts I comminuted slag, and about onepartfoundry sand.
- a compound suitable for forming foundry molds comprising about four parts comminuted slag, about one part foundry sand and a small percentage of fire clay.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
Patented Jan. 26, 1926.
UNITED STATES PATENT OFFICE;
CHARLES E. LEHR, OF BETHLEHEM. PENNSYLVANIA. ASSIGNOR TO BETHLEHEM STEEL COMPANY.
MOLD COMPOUND.
No Drawing. I
To all whom it my concern:
Be it known that I. CHARLES E. LEHR, a citizen of the United States. and resident of Bethlehem, Lehigh County; State of Pennsylvania. have invented certain new and useful Improvements in Mold Comv pounds," of which the following is aspecification.
This invention relates. to a mold or core material. The object, of the invention is to revivify foundry sand by the addition of comminuted slag such as may be procured by the operation of a blast furnace. open hearth furnace or the like. The slag is crushed or ground into fine partic es by any suitable apparatus and mixed with the inert sand together with a small quantitv of fire clav, the latter ingredient constituting a binding medium so that the compound mav be formed into various shapes as required in foundry operations.
The invention contemplates a compound for forming molds having a high degree of permeability to the passage of gases evolved in the casting. operation and. furthermore. provides a material havinghigh refractorv properties. which prevent the material from burning fast to the castings and avoids the formation of scabs thereon.
to I have found that a mixture consisting of approximately four parts comminuted" slag and one part silica sand with a small percentage of fire clay provides a very desirable material for making molds ,or cores 85 for the casting of metals.
While the principal object of my invention is to provide a compound for revivifying sands usually employed in foundry practice. nevertheless. it should be under- 40 stood that my' invention further contemplates the use of new sa'nd as one ofthe constituents of my mixture.
It is customary in foundry operations, particularly steel foundry practice, to use 40 to of new sand incorporated with old sand when forming molds, due to sand becoming inert by the burning out of the vegetable matter and the fusing of the low a grade fire clay-which it contains. I I In accordance with my invention, 1- use comminuted slag. This ingredient is not Application filed May 27, 1925. Serial No. 38,287.
only cheap. being ordinarily a waste byproduct of blast or open hearth furnace operation, but it also gives a degree of stability to the mold or core mixture. the latter result being due to the fibrous nature or characteristic of the slag.
As already pointed out. I prefer to prepare a mixture consisting of approximately four parts of comminuted slag and one part of sand containing a-suificient amount of argillaceous material. If the sand is new, there may be sufiicient vegetable and clav matter to form a binder; however. with use. sand becomes inert. the vegetable mat-.
ter burning out and the clay fusing. and, Vlilllll old sand, I add a small amount of fire c av.
From the foregoing, it will be apparent that I have provided a mixture which greatlv reduces the requirements for new sand for the reason the revivifying effect of my comminuted slag and .fine clay additions permits of sand being used over and over agam. Another advantageous feature'fis opening up a new field of use for a waste product. namelv. slag: and owing to the abundance of slag. the cost of foundry op erations may be greatlv reduced. In addition to the economic advantages just pointed out. mv composition is advantageous from the phvsical points of view of stabilfoundry molds comprising comminuted slag and silica sand.
3. A compound suitable for formm foundry molds comprising commmute slag, inert foundry'sand and fire clay.
4. A compound suitable for formmgi foundry molds comprising comminuted metallurgical slag, silica sand and fire clay.
5. A compound suitable for forming foundry molds comprising about four parts I comminuted slag, and about onepartfoundry sand.
6. A compound suitable for forming foundry molds comprising about four parts comminuted slag, about one part foundry sand and a small percentage of fire clay.
In testimony whereof I hereunto aifix my signature this 22nd day of May, 1925.
CHARLES E. LEHR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33287A US1571014A (en) | 1925-05-27 | 1925-05-27 | Mold compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33287A US1571014A (en) | 1925-05-27 | 1925-05-27 | Mold compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1571014A true US1571014A (en) | 1926-01-26 |
Family
ID=21869554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US33287A Expired - Lifetime US1571014A (en) | 1925-05-27 | 1925-05-27 | Mold compound |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1571014A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739157C (en) * | 1941-08-26 | 1943-09-14 | Eisenwerke Ag Deutsche | Mass for making molds and cores |
| US2687966A (en) * | 1951-12-21 | 1954-08-31 | Fairbanks Morse & Co | Foundry molding material |
| US20030092482A1 (en) * | 2001-11-13 | 2003-05-15 | Jason Meyer | Gaming machine |
| US20030158290A1 (en) * | 2001-11-14 | 2003-08-21 | Lafay Victor S. | Method for producing foundry shapes |
| US6719835B2 (en) | 2002-11-08 | 2004-04-13 | Wyo-Ben, Inc. | Sand casting foundry composition and method using shale as anti-veining agent |
-
1925
- 1925-05-27 US US33287A patent/US1571014A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739157C (en) * | 1941-08-26 | 1943-09-14 | Eisenwerke Ag Deutsche | Mass for making molds and cores |
| US2687966A (en) * | 1951-12-21 | 1954-08-31 | Fairbanks Morse & Co | Foundry molding material |
| US20030092482A1 (en) * | 2001-11-13 | 2003-05-15 | Jason Meyer | Gaming machine |
| US20030158290A1 (en) * | 2001-11-14 | 2003-08-21 | Lafay Victor S. | Method for producing foundry shapes |
| US6719835B2 (en) | 2002-11-08 | 2004-04-13 | Wyo-Ben, Inc. | Sand casting foundry composition and method using shale as anti-veining agent |
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