Method for producing a feeder having an exothermic feeder body, and a feeder having an insulating external shell
US9573188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2013 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Dec 20, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D17/2023
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing a feeder configured for use in a casting mold used for casting metals, wherein the feeder has a feeder body (14) enclosing a feeder cavity (15) and a through opening (19) in its base region (18) for connecting the feeder cavity (15) to the casting mold and the feeder body (14) consists of an exothermic material and is enclosed on its outer side at least in regions by an external shell (27) consisting of insulating refractory material, and wherein the feeder is provided with a feeder foot (20) arranged externally in its base region (18) and having an opening (21) flush with the through opening (19). The feeder is characterized in that the feeder body (14) produced in a first step in a conventional method from an exothermic material is used together with the feeder foot (20) associated with the base region (18) to form the external shell (27) into an injection mold (10) having a mold cavity (30) and feeder body and feeder foot are shot simultaneously with the insulating material, wherein the feeder body (14) including the feeder foot (20) is positioned in such a manner that the insulating material shot into the mold cavity (30) of the i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.