DE105724C - - Google Patents
Info
- Publication number
- DE105724C DE105724C DENDAT105724D DE105724DA DE105724C DE 105724 C DE105724 C DE 105724C DE NDAT105724 D DENDAT105724 D DE NDAT105724D DE 105724D A DE105724D A DE 105724DA DE 105724 C DE105724 C DE 105724C
- Authority
- DE
- Germany
- Prior art keywords
- cast iron
- bar
- grate bar
- grate
- hard
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 1
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 210000001138 Tears Anatomy 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/06—Special casting characterised by the nature of the product by its physical properties
- B22D25/08—Special casting characterised by the nature of the product by its physical properties by uniform hardness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
- F23H17/12—Fire-bars
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
KLASSE 31: Giesserei.CLASS 31: Foundry.
Roststab.Grate bar.
Roststäbe mit Hartgufsbahnen sind die dauerhaftesten. Die Hartgufsschicht erstreckt sich jedoch nur auf die obere Fläche α und bei dieser nur auf eine gewisse Tiefe. Sobald an dieser Fläche die Ecken weggebrannt sind, schreitet der Verschleifs in rascher Folge weiter, weil dann Gufseisen von gewöhnlicher Beschaffenheit der Einwirkung des Brennmaterials und der Schlacke ausgesetzt ist.Grate bars with hard cast iron sheets are the most durable. However, the hard cast iron layer extends only to the upper surface α and only to a certain depth in this case. As soon as the corners of this surface have been burned away, the wear and tear continues in rapid succession, because cast iron of the usual nature is then exposed to the action of the fuel and the slag.
Um nun die Hartgufsschicht erheblich tiefer zu gestalten, wird in die Form des zu giefsenden Stabes ein Metallstab von entsprechendem Querschnitt eingelegt. Die obere Bahn a des Roststabes wird in der bekannten Art mit einer Hartgufsschicht versehen, während der eingelegte kalte Metallstab b das um ihn befindliche Metall abschreckt, demselben die Eigenschaften des Hartgusses verleiht und dadurch einen weit herabreichenden äufseren und inneren Hartgufspanzer des oberen Roststabtheiles erzeugt. f In order to make the hard cast iron layer considerably deeper, a metal rod of the appropriate cross-section is inserted into the shape of the rod to be cast. The upper track a of the grate bar is provided with a hard cast iron layer in the known manner, while the inserted cold metal bar b chills the metal around it, gives it the properties of the chilled cast iron and thereby creates a far-reaching outer and inner hard cast iron armor of the upper grate bar part. f
Claims (1)
Ein Roststab, bei welchem eine gröfsere Widerstandsfähigkeit gegen das Abbrennen dadurch erzielt wird, dafs derselbe um einen in der Form befindlichen Metallstab gegossen und hierdurch auch von innen aus gehärtet wird.Patent claim:
A grate bar in which a greater resistance to burning is achieved by casting it around a metal bar in the mold and thereby hardening it from the inside.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE105724C true DE105724C (en) |
Family
ID=375980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT105724D Active DE105724C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE105724C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3225722A (en) * | 1964-03-09 | 1965-12-28 | Jr William W Robson | Automatic furnace |
| NL8603323A (en) * | 1986-12-30 | 1988-07-18 | Lovink Terborg Bv | METHOD OF MANUFACTURING A CAST IRON AND THAT OBTAINS. |
-
0
- DE DENDAT105724D patent/DE105724C/de active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3225722A (en) * | 1964-03-09 | 1965-12-28 | Jr William W Robson | Automatic furnace |
| NL8603323A (en) * | 1986-12-30 | 1988-07-18 | Lovink Terborg Bv | METHOD OF MANUFACTURING A CAST IRON AND THAT OBTAINS. |
| EP0338136A1 (en) * | 1986-12-30 | 1989-10-25 | Lovink-Terborg B.V. | Method for manufacturing a cast iron pan support frame and pan support frame thereby obtained |
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