French Version
German Version
French Version |
|
German Version |
 |
 |
 |
 |
 |
 |
| Material: | Anviloy 4000 |
| This material is a high density, tungsten-based material produced by powder | |
| metallurgy techniques. It is used in a number of applications, the three main ones being: | |
| Extrusion Dies | |
| Anviloy is widely used for dies in the extrusion of metals, especially copper-based alloys where it can provide significantly longer life than the more traditional die materials. In addition to increased life Anviloy offers the following benefits: | |
| a) | Reduction in press down-time. |
| b) | High thermal stability. |
| c) | Good crack resistance. |
| d) | High impact resistance. |
| e) | Minimal extruded metal pick-up, leading to an enhanced extrusion surface finish. |
| f) | Good machinability, which facilitates the manufacture of complex shapes and die-recycling. |
| Anviloy die inserts must be well supported in hardened tool steel holders. Most users press Anviloy inserts into parallel-sided cases using a shrink-fit of approximately 0.05mm. | |
| Die Casting Components | |
| Anviloy is a particularly useful material from which to manufacture diecasting tooling, especially for casting aluminium and brass. Specific applications such as those shown below enable the economic advantage of Anviloy to be fully realised: | |
| a) | Dies, cores and ancillary components for brass or ferrous diecasting where long life is required. |
| b) | Dies and cores for brass or ferrous diecasting where good casting surfaces are a requirement in order to reduce subsequent finishing costs. |
| c) | Cores and die inserts for aluminium diecasting which would solder or erode when made from steel. |
| d) | Cores and die inserts located at heavy sections of a casting where extra cooling effect is required to reduce or eliminate shrinkage porosity. |
| e) | Facings applied by TIG welding on critical areas of steel dies subject to erosion when used for aluminium diecasting. |
| Hot Riveting, Electrical Upsetting and Electroforging | |
| In these processes heat is generated through the contact resistance of a die/electrode and by the passage of current through the component. Sufficient heat is generated to elevate the material to a plastic condition and pressure being applied to forge or displace the material into some predetermined shape or form. | |
| Anviloy, which exhibits | |
| a) | High strength in compression |
| b) | High hardness at elevated temperature |
| c) | Low electrical and thermal conductivity |
| d) | Good resistance to oxidation at elevated temperature |
| e) | Resistance to sticking to work being formed |
| is ideal for this application, and will give long life when the component surfaces are smooth and regular. If the component materials have a rough and irregular surface sticking can occur between electrode and upset position of the components. | |
| A typical application is the forming of valves and push rods for internal combustion engines. | |
| SPECIFICATION | |
| Nominal Composition: | 90% tungsten-nickel-iron-molybdenum. |
| TYPICAL PROPERTIES | |
| Density: | 17.3 gm/cm3 |
| Hardness: | 32 Rockwell 'C' |
| (approx. 291 HV) | |
| (approx. 293 HB30) | |
| U.T.S: | 960MN/m2 |
| 0.2% Proof Stress: | 600MN/m2 |
| Elongation on 24mm: | 6% |
| All Mallory Alloys Group products conform to, if not exceed, the relevant standards as assured by the Quality Management System |  |
© Copyright 2004 Mallory Group Limited, all rights reserved.