Thermal shock test chamber details

Thermal shock test: used to test the degree of material structure or composite material that can withstand in a continuous environment of extremely high temperature and very low temperature in an instant, so as to test the chemical changes caused by thermal expansion and contraction in a short time. Or physical damage.

First, use

Used in electronic and electrical components, automation components, communication components, auto parts, metals, chemical materials, plastics and other industries, defense industry, aerospace, military industry, BGA, PCB base board, electronic chip IC, semiconductor ceramics and polymer materials Physical changes, testing the material's repeated resistance to high and low temperatures and chemical or physical damage to the product during thermal expansion and contraction, confirming the quality of the product, from precision IC to heavy mechanical components, none Ideal test tool without it.

Second, meet the standard

National military standard GJB150.3-86; national military standard GJB150.4-86; national military standard GJB150.5-86;

Third, the characteristics

â—†The product has beautiful appearance, reasonable structure, advanced technology, and excellent material selection. It has simple and convenient operation performance and reliable equipment performance.

â—†The equipment is divided into high temperature box, low temperature box and test box. It adopts unique heat-dissipating structure and heat storage and cold storage effect. The test object is completely static during the test. Cold and hot air switching mode is adopted to introduce cold and hot temperature into the test area. Achieve the purpose of thermal shock test.

â—†Using Zui's advanced measuring device, the controller adopts large-scale color LCD human-machine touch-talking LCD human-machine interface controller, which is easy to operate, easy to learn, stable and reliable, and displays the complete system operation status and execution in Chinese and English. Set the program curve.

â—† With 96 test specifications, the impact time is 999 hours and 59 minutes. The cycle can be set from 1 to 999 times. It can realize the automatic operation of the refrigerator. Zui can realize automation to a large extent and reduce the workload of the operator. The time starts automatically and stops working.

â—†The left side of the box has a test hole with a diameter of 50mm, which can be used to add power supply load wiring test parts.

â—†It can independently set the functions of three different conditions: high temperature, low temperature and cold and hot shock. When performing cold and hot shock conditions, it can choose two-slot or three-slot type and cold punching and hot punching for impact function. The function of the low temperature test machine.

â—† With automatic, high-precision system loop, any machine action, completely PLC lock processing, all using PID automatic calculus control, high temperature control accuracy.

â—†Advanced scientific air circulation design makes the indoor temperature uniform and avoids any dead angles; complete safety protection device avoids any potential safety hazards and ensures long-term reliability of equipment

â—†Automatic (manual) defrost can be set by the number of cycles and the number of defrosts.

â—†The air outlet is detected and controlled by the air return port sensor. The switching time of the damper mechanism is completed within 10 seconds, and the recovery time of the hot and cold shock temperature is completed within 5 minutes.

â—†In the running status display and curve display, when an abnormal situation occurs, the fault point and cause are automatically displayed on the screen and the method for troubleshooting is provided. When the input power is unstable, the emergency stop device is provided.

â—†The refrigeration system adopts the design of overlapping high-efficiency low-temperature loop system. The refrigeration unit adopts imported compressors from Europe and America, and adopts green environmental protection (HFC) refrigerant R507, R23 with zero ozone coefficient.

â—†Super security protection function: power overload protection, leakage protection, control loop overload, short circuit protection, compressor protection, grounding protection, over temperature protection, alarm voice prompts, etc.

â—†The inner and outer materials of the box are made of stainless steel plate (SUS#304). The outer material has different outer box materials to choose from:

1. Grain treatment of stainless steel surfaces, such as frequent rubbing along the lines, can keep the machine looking new for a long time (recommended)

2. Special anti-rust treatment steel plate electrostatic spraying surface, high-grade texture (according to customer requirements)

Each product is customized according to the customer's requirements, ensuring the high efficiency and energy saving of the equipment, and on-site commissioning and acceptance to ensure the user's performance.

Technical Parameters:

1, temperature range: -40 ° C ~ +150 ° C

2, the upper temperature limit: +175 ° C

3, the lower temperature limit: -60 ° C

4, temperature deviation: ± 2 ° C

5, temperature fluctuation: ± 0.5 ° C

6, temperature recovery time: 5min

7, temperature recovery conditions: high temperature +150 ° C insulation ≥ 30min, low temperature -60 ° C insulation ≥ 30min, the sample weight is within the specified range

8, sample transfer time: ≤ 15 seconds

9, sample transfer method: using pneumatic

10, sample weight: ≤ 3kg

11, high greenhouse heating time: 30min (+25 ° C ~ +100 ° C)

12, low greenhouse cooling time: 60min (+25 ° C ~ -55 ° C)

13, noise: (dB) ≤ 65

14, power: AC380V/50Hz + protective ground

15, total power: 20KW

Cooling System

1. Refrigeration system and compressor: In order to ensure the cooling rate of the test box and the low temperature of the Zui, the test chamber adopts a binary cascade Freon refrigeration system consisting of a German COPELANDBAN semi-hermetic compressor. The cascade system comprises a high pressure refrigeration cycle and a low pressure refrigeration cycle, the connection vessel being an evaporative condenser, and the evaporative condenser functioning as a condenser for the low pressure cycle.

The design of the refrigeration system uses energy regulation technology, and an effective treatment method can ensure the energy consumption and cooling capacity of the refrigeration system can be effectively adjusted under the normal operation of the refrigeration unit, so that the operation cost of the refrigeration system And the failure has dropped to a more economical state.

2. Refrigeration working principle: Both high and low refrigeration cycles adopt reverse card cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, and the work is consumed. The exhaust gas temperature is raised, and then the refrigerant is isothermally exchanged with the surrounding medium through the condenser to transfer heat to the surrounding medium. After the refrigerant is adiabatically expanded by the shut-off valve, the temperature of the refrigerant is lowered. This cycle is repeated to achieve the purpose of cooling.

3. Refrigerant: It adopts R404A (low pressure circulation) and R23 (high pressure circulation) environmentally friendly refrigerant produced by DUPONT Company of USA.

4, cooling method: air cooling.

5, refrigeration auxiliary parts: the main refrigeration accessories and control devices are imported original parts, the United States SPORLAN thermal expansion valve Italy CASTEI solenoid valve; the United States RANCO pressure controller, hydraulic controller, the United States PACKLESS suspension hose, Europe and the United States AC & R 汕 separator , Italy CAS shut-off valve, US SPORLAN filter, etc.

Air conditioning system

1. Air control mode: forced circulation ventilation, balanced temperature adjustment method (BTC). The method refers to that when the refrigeration system is continuously operated, the control system controls the output of the heater according to the result of the PID automatic calculation output according to the set temperature point, and the Zui finally reaches a dynamic balance.

2, air circulation device: built-in air, circulation air duct and stainless steel long-axis ventilator, using efficient chiller and energy regulation system, through the efficient ventilation of the effective heat exchange, to achieve the purpose of temperature changes. The temperature uniformity of the test box is greatly improved by adjusting the adjustable air dam of the air outlet;

3. Air cooling mode: multi-stage diaphragm air heat exchanger.

4, air heating mode: high quality nickel chrome gold wire electric heater.

Test chamber structure

1. Test box structure: The test box adopts an integral combined structure. The test box consists of a high temperature test chamber located at the upper part, a low temperature test box at the lower part, a refrigeration unit cabinet at the rear, and a left rear plate. Electrical control cabinet (system). The box has small footprint, compact structure and beautiful appearance. The refrigeration unit is placed in an independent unit cabinet to reduce the vibration and noise of the refrigeration unit during operation, and to facilitate the installation and maintenance of the unit. The control panel is placed on the left side of the test chamber to facilitate operation.

2, the outer wall material of the box: high-quality carbon steel plate, the surface is treated by electrostatic color spray.

3, box body wall material: imported SUS304 stainless steel plate, corrosion-resistant, easy to clean, beautiful appearance.

4. Insulation material: high quality superfine glass fiber cotton.

5. Sample holder: The stainless steel sample holder for moving the slide rails up and down. The double-force cylinder provides smooth and even power, and the positioning device of the sample holder adopts the indirect electric sensor produced by FESTO of Germany.

6. Observation window: Open a 350×250mm electrothermal coating moisture-proof temperature observation window on the upper box (high temperature box).

7. Cable threading hole: A sliding cable threading pipe is arranged on the upper part of the sample rack and the top of the high temperature test box.

8, sample rack bearing: ≥ 30Kg.

9. Laboratory lighting device: moisture-proof lamp.

control system

1. Temperature measurement: Pt100 platinum resistance.

2. Control device: The controller adopts imported programmable PLC and high-quality imported LCD color LCD touch screen dual-loop temperature control system, and its control display adopts imported color LCD touch screen (5.7-inch) control display. The controller adopts Chinese operation display interface. Display, display, set test parameters, curve, total running time, total running time of the segment, heater working status and calendar time. The control program is compiled by man-machine dialogue mode, and the interface is friendly. The automatic operation function of the refrigerator can be realized only by setting the temperature.

The control system uses an intelligent control software system, which is equipped with automatic combined refrigeration, heating and other subsystems to ensure high-precision control over the entire temperature range, while achieving energy saving and consumption reduction. The perfect detection device can automatically perform Detailed fault display, alarm, such as when the test box is abnormal, the controller displays the fault status in Chinese kanji, and has the storage function of historical data table trend graph and historical fault record. The manufacturer provides a free upgrade of the control software system for two years.

Optional R485 computer communication interface and computer upper and lower computer computer auxiliary control system device to realize continuous data transmission and remote control functions.

Recorders can also be optionally used for experimental data recording.

3, system setting accuracy: temperature: 0.1 °C

Time: 1min

4, running mode: program running or fixed value can be

5, the device has an independent working time tired timer.

Safety protection measures

1. Safe and reliable grounding protection device

2, power supply undervoltage, phase loss protection

3, independent studio over temperature protection

4. Refrigerator overpressure, overload, oil pressure undervoltage protection;

5, heater short circuit, overload protection

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Model and size ( D*W*H mm ):

Inspection and maintenance list [air-cooled]