All sizes are available(both flat and round).
Blanking and forming dies
Brick and tile mould liners
Forming rolls
Press tools
Master hobs for cold hobbing plastic moulds
Punches
Bushes
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D3 tool component must be pre-heated at 900-950°C and then raised to 1050-1100°C. It has be soaked well until uniformly heated is done. D3 tool steel is relatively hard at elevated temperature. So, initial hammer blows need to be light and the temperature shouldnot fall below 1020°C until metal begins to move/flow. Final forging not to be done below temperature 900°C.
Annealing is done slowly and uniformly at 900°C. Then it is soaked for 3-4 hours and cooled in the furnace at room temperature.Re-heating is done at 800-1040°C ,then soaked again for 3-4hours and cooled down in the furnace at room temperature.
Stress Relieving is done in order to minimize the distortion.It is performed after rough machining. The component is heated to 600-650°C ,soaked well and cooled in the furnace/air. Then the finishing of the tool is done
In a controlled atmosphere,the tools need to be heated.. If not possible, we recommend pack hardening . D3 tool steel component must be pre heated to 750-800°C. and then allowed to soak at the same temperature. Then raise it to the temperature of 950-980°Cfor hardening. The component must be soaked thoroughly at this temperature for 35 minutes / 25mm of section, then cooled or quenched accordingly
We recommend double tempering for D3 tool steel.As soon as the D3 tool steel component has warmly cooled after hardening,tempering should be done. For tempering,we select suitable temperature.D3 component is heated slowly and uniformly. When the desired temperature is attained,soak it for atleast 1hour/25mm of section. After first tempering,repeat the same for second tempering.
| Temperature [°C] | HARDNESS(HRC) | |
| 150 | 64-63 | |
| 200 | 62-61 | |
| 300 | 60-59 | |
| 400 | 59-58 | |
| 500 | 56-55 |
| Temperature | Time | Approx. Depth of Case |
|---|---|---|
| 525ºC | 20 hours | 0.30mm |
| 525ºC | 40 hours | 0.35mm |
| 525ºC | 60 hours | 0.50mm |
It needs to be done in good condition using a suitable dressing tool.
Good wear resistance
Great Durability
High Toughness
Great dimensional stability
High compressive strength
The mechanical properties of D3 steels are tabulated below:
| Properties | Metric | Imperial |
|---|---|---|
| Izod impact unnotched | 28.0 J | 20.7 ft-lb |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30457 ksi |
The following table shows the thermal properties of D3 steels.
| Properties | Conditions | ||
|---|---|---|---|
| Thermal expansion | 12 x 10-6/ºC | T (°C) | Treatment |
| 20-100 | |||
This procedure will vary according to the shape and size of D3 tool component.Other factors like type of furnace,medium for quenching etc also matter.
This process is done to reduce internal strain,distortion and also cracking risk.The component is pre-heated dry to 300-400°C. Pre-heat in salt for 10minutes/inch of section at 800-850°C. Then temperature is increased at 800-850°C in salt for 10 minutes/inch of section.Marquenching in salt to be done for 230-250°C for 25mm of section. This procedure is an alternative procedure used when suitable salt bath equipments are available. The component is cooled in still air and tempering is done.
Chemical Composition of all are Plastics moulds steel series will match as per international standards, Please request for the certificate before placing the order.
With our material,we provide mill test certificate and ultrasonic Ok certificate (Note: Provide only if mentioned before placing the order.)
