Sign In | Join Free | My chinaqualitycrafts.com |
|
Brand Name : Lonroy
Model Number : LRTQ-II
Certification : Includes Calibration Certification
Place of Origin : China
MOQ : 1
Price : Negotaible
Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability : 200
Delivery Time : 5-8 work days
Packaging Details : wooden package
Rated Voltage : 220V
Rated Power : 8KW
Rated Temperature : 1350 °C
No-Load Power Loss : ≤2KW
Warranty : 1 Year
This type of high-temperature breathable performance tester is suitable for evaluating the breathable performance of mold shells used in investment casting. It complies with the high permeability method specified in JB/T4153-1999 and the fourth part of the performance test method for mold shells in investment casting as per HB5352.4-2004, namely the determination of breathable performance.
2.Working Principle
1. Melting furnace: The maximum operating temperature is 1000°C.
2. Quartz glass tube: Inner diameter 6mm, outer diameter 8mm, length 400mm.
3. Micrometer caliper: Measuring range is 0mm to 150mm, with an accuracy of 0.02mm.
4. Sample: The shape and size of the sample are shown in Figure 2.
Sample preparation
⑴ Take a celluloid ping-pong ball and a glass tube. Heat one end of the tube to around 250°C. Insert it into the center of the ping-pong ball while it is still hot. Then, use wax (such as beeswax) to firmly bond and seal the ping-pong ball to the glass tube.
⑵ The sample modules should be coated with six layers according to the general shell coating process or in accordance with the specific production process requirements.
⑶ After the sample has dried for 24 hours, it is subjected to calcination. Place it in the furnace at a temperature lower than 100°C, then slowly raise the temperature to 250°C to 300°C, maintain the temperature for a period of time to allow the ball to vaporize, then gradually increase the temperature to 900°C (for silica sol and quartz shell, it is 750°C), maintain the temperature for 2 hours, and then cool down to below 300°C before taking it out of the furnace.
⑷. Sample quantity
The number of valid samples is three.
3.Technical Parameter
Parameter | Specification | Unit |
Model | DTQ-II | - |
Rated Power | 8 | kW |
Rated Voltage | 220 | V |
Rated Temperature | 1350 | °C |
Cold-to-Max Temp. Time | ≤60 | min |
No-Load Power Loss | ≤2 | kW |
Heating Element Connection | Series | - |
Heating Element Specification | DG135/100/12/40, U-shaped | mm |
Chamber Dimensions (Ø×H) | Ø70 × 150 | mm |
Net Weight | 90 | kg |
![]() |
Shell High-Temperature Permeability Tester Shell Gas Permeability Analyzer Images |