Shell High Temperature Ceramic Air Permeability Tester

• After-sales Service: One Year
• Warranty: One Year
• Measurement: Φ 55mm *500mm
• Measurement Resolution: 100ml
• Rated Power: 8kw
• Rated Voltage: 220
• Model NO.: DTQ-II
• Transport Package: Plywood Packing
• Trademark: Xiangyi
• Origin: China
• Production Capacity: 100 PCS/Month

Product Description

Overview:
  DTQ-II shell high temperature air permeability tester is suitable for the air permeability of investment casting shells, and meets CICBA/D05.04-1999, JB/T4153-1999 high permeability method and HB5352.4-2004 investment casting type Shell performance test method Part 4: Determination of air permeability.
Main technical parameters:

name	Unit	Model and technical specifications
rated power	KW	8
Rated voltage	v	220
Rated temperature	ºC	1350
Empty furnace heating time	min	≤60
Electric heating element connection method		Full series
Heating element specifications	mm	DG135/100/12/40, U type
Furnace size (length×width×height)	mm	Ф70×150
weight	kg	90

Working principle:
Device Configuration:
1. Melting furnace: the highest operating temperature is 1300°C
2. Quartz glass tube: inner diameter 6mm, outer diameter 8mm, length 400mm.
3. Vernier caliper: measuring range is 0mm~150mm, accuracy is 0.02mm.
Sample preparation
. Take a celluloid table tennis ball and a quartz glass tube, heat one end of the tube to about 250°C, insert it into the center of the table tennis ball while it is hot, and then glue the table tennis ball to the glass tube firmly with wax (such as beeswax) And sealed.
. Coat the sample module in six layers according to the general shell-making process or according to the regulations of the special production process.
. The sample is roasted after being dried for 24 hours. Put it into the furnace at less than 100°C, first slowly raise the temperature to 250°C~300°C, keep it warm for a period of time to vaporize the ping pong ball, and then gradually raise the temperature to 900°C (water glass, quartz shell is 750°C), Keep it warm for 2h, then drop to below 300°C and get out.
Number of samples: The number of effective samples is 3.
product composition:

NO.	Name	Quantity	Remarks
1	DTQ-II test host	1 set	Including electric furnace and electric control part
2	Oil-free air compressor	1 set	750W-30L
3	Barometer	1	MF4000 series
4	Pressure regulating valve	1
5	U-shaped silicon carbide rod	1 set	Installed in the electric furnace
6	S index thermocouple	1
7	Quartz tube	1	Inner diameter 6mm, length 400mm
8	Pressure gauge	1 set