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Thermal treatment for rgd5160-dm

Objet Geometries Ltd
Thermal Treatment
Parts Made of Objet RGD5160-DM
1. Purpose
Objet RGD5160-DM is an ABS-like digital material fabricated using RGD515 and RGD535 materials on
Connex 3-D printers. Parts made of Objet RGD5160-DM have an initial heat deflection temperature
(HDT) of 58–68°C (136–154°F).This document describes thermal treatments that result in greater heat
resistance for RGD5160-DM parts.
HDT test method: ASTM D 648-06, HDT at 0.45 MPa Note: The actual thermal resistance results depend on the part geometry.
2. Special Instructions
To avoid distortion during thermal treatment:
1. Consider the best orientation for the printed part in the programmable oven.
2. Parts with thin walls and overhangs must be properly supported before placing them in the oven.
3. Place the part on a flat surface in the oven and not directly on the oven rack. 3. Thermal Treatment Procedures
Procedures A and B are suitable for all part geometries. They differ in the desired HDT and the duration
of the procedure.
3.1 Procedure A
• Desired HDT: 90°C (194°F)• Time in oven: approximately seven hours (including cooling time) 1. Clean the part and remove the support material.
2. Place the part in a programmable oven (see specifications on page 4) at room temperature.
3. Set the ramp-up rate to 1°C (1.8°F) per minute. 4. Set the temperature to 60°C (140°F).
5. Turn on the oven.
The oven temperature reaches 60°C (140°F) after approximately 35 minutes.
6. Maintain the temperature at 60°C (140°F) for two hours.
7. Increase the temperature to 70°C (158°F) and maintain for two hours.
The oven temperature reaches 70°C (158°F) after approximately 10 minutes.
8. Increase temperature to 80°C (176°F) and maintain for one hour.
9. Cool in oven.
10. When oven temperature is lower than 35°C (95°F), remove the part from the oven.
Caution: Always wear oven gloves when handlings hot parts.
Figure 2 Oven temperature over time (Procedure A) 3.2 Procedure B
• Desired HDT: 100°C (212°F)• Time in oven: approximately nine hours (including cooling time) Note: This procedure may cause greater distortion to unsupported thin walls and overhangs. If this is a
1. Clean the part and remove the support material.
2. Place the part in a programmable oven (see specifications below) at room temperature.
3. Set the ramp-up rate to 1°C (1.8°F) per minute.
4. Set the temperature to 60°C (140°F).
5. Turn on the oven.
The oven temperature reaches 60°C (140°F) after approximately 35 minutes.
6. Maintain the temperature at 60°C (140°F) for two hours.
7. Increase the temperature to 70°C (158°F) and maintain for two hours.
The oven temperature reaches 70°C (158°F) after approximately 10 minutes.
8. Increase the temperature to 80°C (176°F) and maintain for one hour.
9. Increase temperature to 100°C (212°F) and maintain for one hour.
10. Cool in oven.
11. When the oven temperature is below 35°C (95°F), you can remove the parts from the oven.
Caution: Always wear oven gloves when handlings hot parts.
Figure 3 Oven temperature over time (Procedure B) 4. Programmable Oven
4.1 Recommended Specifications

Specification
Temperature stability (PID controller On/Off) depends on oven size:750 W for 28-liter oven9000 W for 900-liter oven depends on oven size:300 W for 28-liter oven3500 W for 900-liter oven stores 4 programs and up to 16 segments(Eurotherm programmer, or similar) 4.2. Recommended Oven Manufacturers and Models
The following oven manufacturers and models are recommend by Objet and are available worldwide.
Note: Other manufacturers and oven models may be suitable. Make sure they meet the specifications
Manufacturer
Oven model
Chamber size
Comments

Source: http://www.laserlines.co.uk/images/m2_13/objet/materials/DOC-08269_D_RGD5160-DM_Thermal-Treatment.pdf

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