US264847A - Mold-bottom for casting steel ingots - Google Patents
Mold-bottom for casting steel ingots Download PDFInfo
- Publication number
- US264847A US264847A US264847DA US264847A US 264847 A US264847 A US 264847A US 264847D A US264847D A US 264847DA US 264847 A US264847 A US 264847A
- Authority
- US
- United States
- Prior art keywords
- mold
- block
- steel ingots
- casting steel
- refractory
- 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
- 229910000831 Steel Inorganic materials 0.000 title description 16
- 239000010959 steel Substances 0.000 title description 16
- 238000005266 casting Methods 0.000 title description 10
- 241000209456 Plumbago Species 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 230000036633 rest Effects 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000002045 lasting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
Definitions
- My invention is designed to obviate the foregoing objections to and imperfections of the cast-iron mold-bottoms.
- the mold-body 0 simply rests on the plane upper face of the block A for casting ingots, and there is no peculiarity 'in its construction.
- the refractory block A is preferably made of plumbago, or the mixture of plumbago and clay which is employed in making crucibles for melting cast-steel in. It may, however, be made of fire-brick materials or any other that will serve the purpose of resisting heat and abrasion.
- This form prevents the adhesion of the outflowing steel to the edges of the block; but especially this form is suited to my method of securing the block in the bottom or base B, which is made in two parts, a b, the lower part, a, being a simple plane block, and the upper part, b, being a rim-piece, with a space in the middle just of the size and shape to hold the refractory block A, as shown in Fig. 4.
- the two parts a b are united after the insertion of the refractory block A by screws 0 .c, Fig. 2, or any equivalent means, which readily allows the separation of the parts and reuniting of the same.
- a block, A forming the bottom of the mold, made of plumbago or equivalent refractory material or com- 2.
- the bottom B composed of the parts a b, constructed as described, in combination with [0 the refractory block A, substantially as and for position, held in a holder, B, above which it the purpose herein specified.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
Patented Sept. 26, 1882.
\IVIT NESSES- r, Walhinion. D. C.
UNITED STATES ATENT OFFICE.
ELMORE A. BARNES, OF PITTSBURG, PENNSYLVANIA.
MOLD-BOTTOM FOR CASTING STEEL INGOTS.
SPECIFICATION forming part of Letters Patent 110,264,847, dated September 26, 1882.
Application filed May 5, 1882. (Model) To all whom it may concern Be it known that I, ELMORE A. BARNES, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented an Improvement in Mold-Bottomsfor (lasting Steel Ingots; and I do hereby declare that the following is a full and exact description thereof, reference being bad to the accompanying drawings, making part of this specification- Figure 1 being a top view of my improved mold-bottom Fig. 2, a bottom view of the same; Fig. 3, a side view of the removable block of the mold-bottom Fig. 4, a vertical section through the mold-bottom and moldsides together.
Like letters designate corresponding parts in all of the figures.
In the use of the ordinary cast-iron bottoms for the molds employed in casting steel ingots serious troubles occur. The melted steel as it is poured into the mold and strikes the bottom rapidly cuts the bottom away at the center, and when thus a cavity is formed in the bottom and the melted steel fills the same at each casting a burr or excrescence is formed on the lower end of the ingot, which is a waste of so much metal; but thisis not the most serious result. This excrescence, when the ingot is heated forsubsequent rolling, cools more quickly than the body of the ingot, so that it hardens sufficiently before passing between the rolls to indent the surfaces thereof, greatly to their injury, so that they frequently require redressing. The rapid destruction of the mold-.
bottoms from the cause specified also is an item of considerable expense.
My invention is designed to obviate the foregoing objections to and imperfections of the cast-iron mold-bottoms.
It consists in a removable and replaceable block, A, of any suitable material that will sufficiently withstand the abrading action of the molten steel poured into themold, this block being secured in the middle of the bottom B of the mold and of sufficient size to receive the lower end of the mold-body G, with a proper margin around the body.
Included in my complete invention, also, is
an improved means of securing the refractory block in the mold-bottom.
The mold-body 0 simply rests on the plane upper face of the block A for casting ingots, and there is no peculiarity 'in its construction.
The refractory block A is preferably made of plumbago, or the mixture of plumbago and clay which is employed in making crucibles for melting cast-steel in. It may, however, be made of fire-brick materials or any other that will serve the purpose of resisting heat and abrasion. For securing this block in the bottom or base B so that it cannot be drawn any by the ingot clinging to it, (as sometimes would happen if not guarded against, since when the mold-bodyG is carelessly placed on the bottom some molten steel is apt to leak out underneath it and flow over the edge of the block A, causing such adhesion of the ingot to the block as to involve the destruction of the block in separating it from the ingot,) I make the edges ofthe block somewhat inclined, likethe sides of a pyramid, as shown in Fig. 3. This form prevents the adhesion of the outflowing steel to the edges of the block; but especially this form is suited to my method of securing the block in the bottom or base B, which is made in two parts, a b, the lower part, a, being a simple plane block, and the upper part, b, being a rim-piece, with a space in the middle just of the size and shape to hold the refractory block A, as shown in Fig. 4. The two parts a b are united after the insertion of the refractory block A by screws 0 .c, Fig. 2, or any equivalent means, which readily allows the separation of the parts and reuniting of the same.
Any variation in the construction of the parts employed in my invention which does not depart from the principle and purpose thereof may be made, and the employment of the invention for any analogous purpose which may be useful is contemplated herein.
Aseparate removable and replaceable block, even if not of refractory materials, may be used to advantage, though of course the refractory block is much the best.
What I claim as my invention, and desire to secure by Letters Patent, is
1. In a mold for casting ingots, a block, A, forming the bottom of the mold, made of plumbago or equivalent refractory material or com- 2. The bottom B, composed of the parts a b, constructed as described, in combination with [0 the refractory block A, substantially as and for position, held in a holder, B, above which it the purpose herein specified.
5 projects, and its edges being inclined, in combination with the mold-body O, which rests on the said block, substantially as and for the purpose herein specified.
ELMORE A. BARNES.
Witnesses:
J. S. BROWN, E. J. BROWN.
Publications (1)
Publication Number | Publication Date |
---|---|
US264847A true US264847A (en) | 1882-09-26 |
Family
ID=2334111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US264847D Expired - Lifetime US264847A (en) | Mold-bottom for casting steel ingots |
Country Status (1)
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US (1) | US264847A (en) |
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- US US264847D patent/US264847A/en not_active Expired - Lifetime
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