US6440A - Improvement in preparing metallic patterns for casting - Google Patents
Improvement in preparing metallic patterns for casting Download PDFInfo
- Publication number
- US6440A US6440A US6440DA US6440A US 6440 A US6440 A US 6440A US 6440D A US6440D A US 6440DA US 6440 A US6440 A US 6440A
- Authority
- US
- United States
- Prior art keywords
- casting
- improvement
- acid
- metallic patterns
- preparing metallic
- 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
- 238000005266 casting Methods 0.000 title description 12
- 239000002253 acid Substances 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000010439 graphite Substances 0.000 description 10
- 241000209456 Plumbago Species 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 102100000672 SMPX Human genes 0.000 description 2
- 108060007673 SMPX Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 235000013871 bee wax Nutrition 0.000 description 2
- 239000012166 beeswax Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
- B24B39/02—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working internal surfaces of revolution
- B24B39/023—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working internal surfaces of revolution the working tool being composed of a plurality of working rolls or balls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
Definitions
- my invention consists in converting the surface of iron castings into plumbago by treating them with dilute acid, which dissolves out most of the iron, but leaves the carbon, which is insoluble in the menstruum, in the form of graphite or plumbago, which, when dry,is capable of being smoothed and polished, so as to make it suitable for the surface of patterns and for the protection of theinterioriron from oxidation.
- dilute acid which dissolves out most of the iron, but leaves the carbon, which is insoluble in the menstruum, in the form of graphite or plumbago, which, when dry,is capable of being smoothed and polished, so as to make it suitable for the surface of patterns and for the protection of theinterioriron from oxidation.
- a tub or other convenient vessel is provided of the proper size, in which is placed asuitable quantity of dilute sulphuric or other acid, or a mixture of acids, in the proportion of one part of the acid to about ten parts of water.
- the depressions should be insulated from the action of the acid by means of a coating-of beeswax or other substance capable of resisting the action of the acid, and the protuberances then subjected to its action until sufficiently reduced, when, if the thickness of the entire casting were required to be lessened, the wax might be removed and the whole surface subjected to the action of the acid by immersing it in the tub.
- Oonvertin g the surface of iron castings into plumbago by treating them with dilute acid, and then reducing them to the required form and size and smoothing and polishing them, substantially in the manner and for the purpose herein set forth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Soft Magnetic Materials (AREA)
Description
UNITED STATES PATENT FFICE.
THEODORE G. BUOKLIN, OF WEST TROY, NEW YORK.
IMPROVEMENT IN PREPARINGfMETALLlC PATTERNS FOR CASTING.
To all whom it may concern Be it known that I, THEODORE GnBUCKLIN, of West Troy, in the county of Albany and State of New York, have invented a new and Improved Mode of Finishing Cast-Iron Patterns for the Use of Founders and for other purposes, of which the following is a full and exact description.
The nature of my invention consists in converting the surface of iron castings into plumbago by treating them with dilute acid, which dissolves out most of the iron, but leaves the carbon, which is insoluble in the menstruum, in the form of graphite or plumbago, which, when dry,is capable of being smoothed and polished, so as to make it suitable for the surface of patterns and for the protection of theinterioriron from oxidation. Preparatory to operating upon the castings a tub or other convenient vessel is provided of the proper size, in which is placed asuitable quantity of dilute sulphuric or other acid, or a mixture of acids, in the proportion of one part of the acid to about ten parts of water. lt is to be observed that for this purpose the proportion of the acid must not greatly exceed that above given, because its action would then be too energetic and it would corrode the surface of the casting unequally, and thus render it unfit for a pattern. Into this menstruum the castings are placed and allowed to remain undisturbed for a space of time varying from one to forty-eight hours, according to the thickness which the coating of plumbago is required to be made. If the surface of the casting should happen to be uneven, and it is required to reduce it to a uniforrnly even and true plane, the depressions should be insulated from the action of the acid by means of a coating-of beeswax or other substance capable of resisting the action of the acid, and the protuberances then subjected to its action until sufficiently reduced, when, if the thickness of the entire casting were required to be lessened, the wax might be removed and the whole surface subjected to the action of the acid by immersing it in the tub. When this part of the process has progressed to the required point the further action of the acid is arrested by dipping the casting into a strong solution of potash or other alkali,after which it is carefully dried by a fire or in an oven prepared for the purpose. The next step is to remove by means of a knife, scraper, chisel, or plane so much of the protuberant or other parts as may be deemed necessary, and then with a smooth piece of steel or other hard substance of the proper shape level and burnish the whole surface, which will then be in the best possible condition for a pattern to be molded from,and thus obviating the necessity of using either wax or varnish.
What I claim in the before-described process as of my invention, and desire to secure by Letters Patent, is.-
Oonvertin g the surface of iron castings into plumbago by treating them with dilute acid, and then reducing them to the required form and size and smoothing and polishing them, substantially in the manner and for the purpose herein set forth.
THEODORE G. BUOKLIN.
Witnesses:
Fas. BoNRAsso, MIRANDA MARTIN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US6440A true US6440A (en) | 1849-05-08 |
Family
ID=2066739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US6440D Expired - Lifetime US6440A (en) | Improvement in preparing metallic patterns for casting |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US6440A (en) |
-
0
- US US6440D patent/US6440A/en not_active Expired - Lifetime
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