China NBC-CY150L ozone aging test chamber 150L

use

The content of ozone in the atmosphere is very small, but it is the main factor causing rubber cracks. This product simulates and strengthens the ozone conditions in the atmosphere, studies the effect of ozone on rubber, and quickly identifies and evaluates the rubber's anti-ozone aging performance and anti-ozonant agent protection. efficiency method.

Reference standard

GB/T7762-2003 Static tensile test method for ozone crack resistance of vulcanized rubber or thermoplastic rubber

GB/T2951.21-2008 General test methods for cable insulation and sheath materials

GB/T 11206-2009 Rubber aging test surface cracking method, and other test methods specified in relevant standards.

Principles and methods

Test methods can be divided into "static" and "dynamic" according to the test methods and standards. Static means that the sample is stretched and then placed in the test box for testing. Dynamic means that the sample is placed on the fixture of the test box while stretching. While doing the test, the tensile fluctuation is about 5%-45% of the sample being tested.

Structure

Structure: All-in-one machine

Material

a) Inner box: SUS304 stainless steel plate

b) Outer box: SUS304 stainless steel plate or baking paint (off-white).

c) Insulation: double protection of rigid polyurethane foam + aluminum silicate insulation cotton.

box door

a)   Single door, left opening

b) Two silicone rubber sealing strips for window frame/door frame and anti-condensation electric heating device.

c) The doors and windows are equipped with observation windows W300xH450㎜ and lighting.

Sample rack requirements

a) (Dynamic test; optional) - Fix both ends of the sample with clamps at the required elongation. When in contact with ozonated air, the length direction of the sample should be basically parallel to the direction of the air flow.

b) The fixture should be made of materials that do not easily decompose ozone (such as aluminum).

c) The sample rotation speed is between (20^-25) mm/s, and each sample continuously moves along the same path in a plane vertical to the dry air flow.

d) The time for the same sample to rotate once is (5~10) min. The scanning area of ​​the sample is at least 40% of the effective area of ​​the test chamber.

e) Sample preparation should comply with the requirements of GB/T 9865.1. It is recommended that the test specimen be cut from a newly molded test piece. If necessary, it can be cut from the finished product. There should be at least 3 samples per test condition. The width of the long standard specimen is not less than 10mm, the thickness is 2.0mm±0.2mm, and the length of the specimen between the two ends of the clamp before stretching is not less than 40mm.

Standard static test fixture-

a) 3.5.Control panel-controller display

b) Power switch

c) Light button,

a) 3.6. Cabinet configuration - equipped with a stainless steel SUS #304 storage rack turntable

b) φ50mm lead hole lead hole: 1, equipped with hole cover and silicone rubber plug.

c) 4 mobile casters

d) 4 horizontal fixed tripods

e) There is a drainage hole at the bottom of the rear of the box to facilitate the drainage of condensed water from the unit;

air circulation adjustment

Adjustment method

Circulation fan-FLOW THROW air supply mode; horizontal diffusion and vertical heat exchange arc circulation.

Power-saving motor + stainless steel extended shaft connected to multi-centrifugal circulation fan.

Heating system

heater

Control method - Fin-type heat pipe-shaped stainless steel electric heater for heating.

-ID adjustment, actuator: solid state relay.

Refrigeration system

1. Working method: mechanical refrigeration/air cooling.

2. Control method : The controller of the control system automatically adjusts the operating conditions of the refrigerator according to the test conditions.

3. Compressor : low temperature effective fully sealed compressor.

4. Evaporator : fin-type multi-stage automatic load capacity adjustment. 

5. Condenser : air condenser.       

6. Expansion system : refrigeration system with automatic capacity control

7. Refrigerant : environmentally friendly refrigerant R404 (ozone depletion index is 0).

8. Refrigeration process : Nitrogen shielded welding, double-stage rotary vane pump vacuuming to ensure the interior of the refrigeration system is clean, a water tray is designed at the bottom of the compressor, and the condensed water is discharged out of the box through the drain pipe at the rear of the box.

9. Refrigeration accessories

    a)   Expansion valve 

    b) Solenoid valve  

    c) Filter   

    d) Pressure controller 

    e) Stop valve   

    f) Oil separator 

10. Accessories : desiccant, oil separator, refrigerant flow window, repair valve, high-voltage protection switch.

Ozone detection system

• Ozone generator-(uses voltage silent discharge tube to generate ozone)

• Ozone sensor-Ozone concentration sensor, capable of precise control

• Ozone exhaust system - after the experiment is completed, the ozone in the experimental box will be exhausted to the outdoors through a dedicated exhaust fan and air duct.

• Ozone flow regulator-uses high-precision glass flow rotameter for precise adjustment

Control System

1. Sensor : (Uses voltage silent discharge tube to generate ozone)

2. Controller : Ozone concentration sensor, which can achieve precise temperature control, 7-inch color LCD touch human-machine interface controller, large field of view screen, with screen lock function. Switch between Chinese and English

3. Controller specifications

a) Temperature resolution : 0.1.

b) Setting range of each time period : 0~530 hours can be set freely.

c) Temperature input signal

d) PID control parameter setting, PID automatic calculation.

4. Screen display function

a)   Using graphic control software screen dialogue, direct touch screen options: including program settings, curve display, historical data, manual operation, automatic operation, auxiliary settings, etc.

b) Display execution status, temperature and time set values, remaining time, and remaining number of cycles.

c) It has a separate program editing screen where temperature, time and number of cycles can be input.

d) The temperature program setting is displayed with a graphic curve, with the function of real-time display of program curve execution.

e) Display the fault status and explain the troubleshooting method.

f) Temperature set (SV) and actual (PV) values ​​are directly displayed.

g) The screen can be adjusted for backlight, and the screen display protection function can be set for timing and shutdown.

5. Program capacity

a) Control function-program creation adopts conversational function.

b) Number of cycles: adjustable from 1 to 9999 times.

c) Usable program groups: maximum 50 PATTEN (that is, 50 test specifications can be set and stored independently)

d) It has the function of program memory after power off, and automatically starts and resumes program execution after power is restored.

e) The graphic curve can be displayed in real time when the program is executed.

f) It has scheduled startup and shutdown functions.

g) With date and time adjustment functions.

safety protection device

a) 8.1. Refrigeration protection-compressor overheating protection switch

b) Compressor high pressure protection switch

c) Compressor overcurrent protection switch

a) 8.2. Heating protection-heater surface temperature over-temperature protection

b) Heater short circuit and overload protection device

a) 8.3. Other protections - cycle motor overheating protection

b) Condensing fan overheating protection

c) High temperature, low temperature and over-temperature protection

d) Reverse phase, phase loss protection device,

e) No fuse switch overload protection.

f) Smoke alarm machine power-off protection device.

g) Line fuses and fully sheathed terminals

Accessories and random information

1. Storage rack

2. Shelf track

3. Power test hole

4. Power cord

5. Drainage outlet

6. Air source interface

7. Mobile casters

8. Fixed foot cup

9. Maintenance manual

10. Controller manual

(The above individual parameters may be adjusted) (Pictures are for reference only, the actual product shall prevail)

machine X1, manual X1, certificate X1, warranty card X1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.