Method for producing an extruder barrel assembly
US5221821A · kind A · utility
8Cited by
7References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1992 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Jan 10, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K15/006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing an extruder barrel is disclosed which fabricates a barrel in two longitudinal sections and joins the sections together by electron beam welding. In a preferred form, the barrel sections are formed by machining conical recesses longitudinally in each section whereby a complementary bore is defined by the assembled barrel sections. The machined recesses may be formed with spiral, longitudinal or radial grooves. The recesses may be a uniform conical shape, stepped conical or a dual tapered shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.