Home  |  Information  |  Contact us | Din  30910  |  Products  |  Service  |  Virtual tour | Sinter Meccanica
 

Die
Powder mixing
Pressing
Sintering
Sizing
Ispection

 

 
 
 

 



Die
The moulds, fully designed and constructed by us, make use of the most modern working techniques.

Powder mixing
The iron powder, that is the raw base material of the different steel types, is added to alloying elements, such as nickel, copper, carbon, molybdenum or other elements. To ease the pressing a small doses of lubricant is added in order to preserve the dies

Pressing
The mixtures are poured automatically in a die comprising bottom die and punches being in the shapes of the component to be carried out. After compression the piece is stripped from the bottom die by the coordinate movement of the different members of a mechanical or hydraulic press. These presses put into action appreciable stresses making possible to exert pressures of 4 to 8 T./cm sq on the powders.

Sintering
Bit is the heat treatment at controlled atmosphere that is carried out in three stages: Preheating. (500 - 750). The lubricant is removed with the gradual rise in temperature in this stage. Sintering. (1120 - 1250). The stay of the parts in this stage varies from 30 to 60. The so treated particles bind in a coherent mass without melting and get their strength. Cooling. The components are cooled gradually in this final stage till reaching the room temperature.

Sizing
If a very close tolerance or a high density is required, the parts are sized into dies on hydraulic or mechanical presses. Pressure varies from 6 to 8 T./cm sq.


Ispection
The dimensional tested are carried out with methods identical to the conventional ones used in the mechanical sector. Checking and testing of the physical and mechanical characteristics.


 
 
 

 

 
                                                                                                                                              design by ACweb

                                      

Gino Olivares srl - Gessate (MI)