Alternating damp heat composite salt spray corrosion test chamber

Alternating damp heat composite typeSalt spray corrosion test chamberIntroduction: The alternating wet heat composite salt spray corrosion test chamber breaks through the concept of traditional salt spray chambers. In addition to the functions of conventional salt spray testing machines, it also combines the functions of alternating (cyclic) salt spray testing, providing testing environments for corrosion such as pitting and filamentous corrosion. It has testing environments such as hot air drying, wet heat, forced drying, and salt spray.

Introduction to the Alternating Damp Heat Composite Salt Spray Corrosion Test Chamber
The alternating damp heat composite salt spray corrosion test chamber breaks through the concept of traditional salt spray chambers. In addition to the functions of conventional salt spray testing machines, it also combines the functions of alternating (cyclic) salt spray testing, providing testing environments for corrosion such as pitting and filamentous corrosion, and has testing environments such as hot air drying, damp heat, forced drying, and salt spray.

Compared with traditional salt spray chambers, the effects of cyclic corrosion such as salt spray, drying, and wet heat on products are more practical because products are transported, stored, and used in dry and wet environments. Therefore, accelerated corrosion testing machines should be able to simulate this environment more realistically. Moreover, foreign research has also shown that cyclic corrosion is very similar to outdoor corrosion in terms of corrosion rate, structure, and morphology, and has excellent correlation with outdoor corrosion. It has been included in the commonly used testing scope. More and more automotive industry tests require multi-step aggregation of salt spray, drying, and wet heat combined for cyclic testing.

1.

Equipment model, specifications, and quantity:

1.1 Equipment Name: Alternating Damp Heat Composite Salt Spray Corrosion Test Chamber

1.2 Equipment model:HW—120D

1.3 Quantity: One unit.

2.Equipment characteristics and purposes:

2.1.The structural design of the test chamber is reasonable, and the supporting products and functional components have domestic standards, which can adapt to long-term stable and reliable testing needs. And it is easy to use, operate, and maintain, with a long service life, beautiful appearance, and a good user interface, making user operation and monitoring simpler and more intuitive.

2.2.The main components of the equipment are selected from well-known international and domestic brand manufacturers to ensure the overall quality and performance of the machine.

3.Execution standards:

Can be pressedMeet the test standards:ISO 9227:2006 NSS、ISO 9227:2006 CASSGB/T10125In 1997, neutral salt spray test (NSS), acetate salt spray test (ASS), copper accelerated acetate salt spray test (CASS) were conducted according to ASTM B117-2002 and BS7479:1991, and cyclic corrosion test can also be conducted according to standards such as GM9540P.

3.1. GB/T10587-2006Technical conditions for salt spray test chamber.

3.2. GB/T10125-97 Artificial atmosphere corrosion test, salt spray test.

3.3. GB 2423.17-93Basic Environmental Testing Procedures for Electrical and Electronic Products - Test Ka: Salt Spray Test Method.

3.4. GB 6460-86Metal coated copper accelerated acetate salt spray test (CASS).

3.5. GB 6459-86Metal coating acetate spray test (ASS).

3.6. GJB150、 ASTM B117、ASTM B368、ASTM B380、ASTMD1735、ASTM D2247、ASTM G85 A1、 GM4465P、ISO9227、DIN 50021。

4.Main technical specifications and parameters:

Temperature range: in salt spray state: from room temperature to---60℃；

Dry state: from room temperature to---70℃；

Static state: from room temperature to---60℃；

4.1.Internal dimensions:1）1200mmx1000mmx500mm（L×W×H）

4.2.Temperature Range: Sample Room: Normal Temperature 0~+60℃ controllable, * * degree not less than ± 1 ℃.

Saturation cylinder:+47℃～+63℃.

4.3.Temperature uniformity: ≤ 2 ℃.

4.4.Temperature fluctuation: ≤ 1.0 ℃.

4.5Humidity range:70%～98%R.H.

4.6Humidity deviation: below 70% R.H. ± 5%; 70% R.H. or above+2, -3% RH.

4.7Salt spray deposition: Salt spray deposition1ml/h～2ml/ 80cm2/hThe salt fog spray is even, and the difference between the low salt fog sedimentation in the sample room is not less than 0.5ml/h.

4.8Spray mode: pneumatic, continuous and intermittent spray is optional.

4.9**Angle: 110-120 °.

4.10Operating environment temperature: 0-35 ℃.

5.The main structural components of the test chamber are:

5.1 Laboratory: AdoptingOriginal packagingPPboard, with a thickness of 12mm, sealed door for low temperature, acid and alkali resistance laboratory:PPboardAttached is a transparent defogging glass observation window made of tempered glass, with a neat and beautiful appearance

5.2 Salt solution replenishment tank: equipped with a water level perspective window. Easy to clean, easy to observe solution water level, convenient to replenish salt solution at any time.

5.3 Saturation bucket: made of SUS304 stainless steel plate, with good temperature and pressure resistance, providing humid air consistent with the inside of the box.

5.4 Laboratory sample rack: V-shaped bracket and 0-type suspension bracket are both made of stainless steel tube wrapped with heat shrinkable PVC film, which is corrosion-resistant and load-bearing. They can place a large number of specimens and freely choose 15 ° or 30 ° to place the test plates.

5.5 Heating method: This seriesThe salt spray corrosion test chamber adoptsUType alloy rapid heating electric heating tube, pure titanium heating tube, acid and alkali corrosion resistant, ultra long service life completely independent system. Does not affect the salt spray test and control circuit. The output power of temperature control is calculated by a microcomputer to achieve precision and efficiency in electricity consumptionThe temperature of the box is more uniform and stable.

5.6 Humidification system: The humidification tube of the humidification bucket is introduced into the working room and uniformly stirred by the fan in the working room Humidity is represented by dry wet bulb temperature.

5.7 Air conditioning system: This system consists of a regulating chamber, a drying heater, an evaporator, a humidifier expansion tube, a centrifugal fan, etc. The purpose is to thoroughly mix the dry and humid air adjusted in the regulating chamber, send it into the working chamber, enter and return the air inlet, and send it back to the regulating chamber for continuous circulation, repeating the cycle.

5.8 Box cover: It has enough strength and rigidity to observe the spray condition. Adopting pneumatic strut switch box cover, convenient and flexible. Adopting a water sealed structure to ensure that salt spray does not overflow. The automatic protection of the box cover is activated, and after re covering, the cyclic corrosion test is automatically started from the breakpoint. The box cover adopts 110º～ 120ºAngle to ensure that condensed water does not drip onto the specimen.

5.9 There is a balanced exhaust hole designed to prevent pressure rise inside the box, which prevents excessive movement of airflow in the workspace during exhaust.

5.10 Equipped with a graduated separating funnel, it can collect and visually observe the salt spray settling amount outside the box.

5.11 There are two spray towers, which can meet the demand of salt spray sedimentation more evenly and faster.

6.Gas supply system:

6.1 The air source is supplied by an air compressor (provided by the customer), which purifies and filters the air, adjusts the secondary air pressure, and sends it into a saturated tank.

6.2 This test chamber is equipped with two air pressure regulating valves. When the air pressure provided by the air compressor is connected, the pressure of each pressure regulating valve entering the gas pipeline should be adjusted to 0.2Mpa

6.3 The pressure of * * pressure regulating valves (i.e. regulating valves for spray pressure) entering the nozzle shall be adjusted to 0.07-0.1MPa.

6.4 Gas circuit system: stable and reliable imported gas circuit components.

7.Spray system: detachable nozzle for easy cleaning

7.1 Air flow spray method and siphon principle are used to atomize the absorbed salt solution through the nozzle. The atomization particle size is uniform, which can ensure the continuity and stability of the test.

7.2 The non crystallization nozzle and baffle plate spray device are used, and they are evenly and freely dropped into the test chamber after being diffused by the baffle, so as to make the salt mist sedimentation amount reach the specified value.

7.3 The brine before spray is injected into the preheating tank through the brine storage tank, preheated, and then introduced into the nozzle. Make the temperature fluctuation of the constant temperature studio smaller.

7.4 Salt spray settling amount: can be adjusted according to the small nozzle pressure1--32ml80cm 2/ 1hr ( 16hrThe average amount is adjusted by adjusting the angle of the baffle to control the salt spray settling amount, so as to achieve a salt spray settling amount of 1-2ml/cm2 · h.

7.5 The spray pressure can be adjusted to 0.8~1. MPa.

8. Refrigeration system:

The design and application of energy regulation technology in refrigeration systems can ensure the normal operation of refrigeration units

Okay, it can effectively adjust the energy consumption and cooling capacity of the refrigeration system, keeping it in operation. By using the Balanced Temperature Control (BTHC) method, the control system automatically calculates the output of the heater based on the set temperature point through PID calculation when the refrigeration system is working continuously, ultimately achieving a dynamic balance.

8.1.Condenser: air-cooled condenser.

8.2.Evaporator: finned heat exchanger.

8.3.Electromagnetic valve: Omron.

9.Control system:

9.1 Temperature and humidity controller

Monitor: TEMI880 color touch screen controller imported from South Korea. Operation mode: fixed value or program.

● Setting method: Chinese menu, touch screen human-computer interaction interface input program capacity: can store 120 sets and 1200 segments of test programs.

● Program length: Each program has an additional 99 segments. Loop times: Each program segment can loop 999 times.

● Setting range:

△ Temperature: -100 ℃ to+200 ℃,

△ Humidity: 0-100% RH,

△ Time: 0-999 hours and 59 minutes.

Resolution: Temperature: 0.1 ℃, Humidity: 0.1% RH, Time: 0.1min.

● Input: PT100 platinum resistor.

Communication function: This controller is equipped with RS232/485 interface (USB interface model controller can also be optionally selected, which can export and store data).

Other functions: The device has multiple alarm protection functions such as overheating, fan overheating, overcurrent, etc. The controller's fault self diagnosis function ensures that once the device encounters an abnormality, the power supply to the main components will be cut off and an alarm signal will be issued.

9.2.Measurement data collection: PT100 platinum resistance.

9.3.Other actuators: French brand products such as Schneider AC contactors, switches, buttons, Omron small relays, etc.

9.4 Heating tank liquid expansion temperature controller 0-120 ℃.

9.5 Saturated air tank liquid expansion temperature controller 0-120 ℃.

9.6 **Pressure precision adjustment: including air filter.

9.7 Pressure gauge: 2.5kg/cm2 precision 0.01kg/cm2 IK-2.5.

10.Protector:

10.1 Automatic power-off device when low water level occurs

10.2 Overtemperature automatic power-off device

10.3 Sound and light alarm device

10.4 Saturated bucket over temperature protection

10.5 Salt low water level warning device

10.6 Refrigeration compressor overheating alarm

10.7 Refrigeration compressor overcurrent alarm

10.8 Refrigeration compressor overvoltage alarm

10.9 Pure water level indicator and lack of alarm

11Attachment:

11.1 2 measuring cylinders

11.2 2 glass temperature indicators

11.3 Two sets of standard 80cm2 salt spray collection devices

11.4 2 non crystalline glass nozzles

11.5 1 wet bulb cup

11.6 1 set of rapid defogging system

11.7 Sodium chloride (NaCl) 500g in 6 bottles

11.8 Four sets of drawings that match the physical object, including: system structure diagram, schematic diagram, and electrical maintenance detail diagram

12.Usage conditions:

12.1 Power supply: AC380V 50Hz (three-phase four wire): The allowable voltage fluctuation range is AC (380 ± 38) V; the allowable frequency fluctuation range is (50 ± 0.5) Hz.

12.2 Usage environment: Allowable temperature range: 0 ℃ -30 ℃; Performance guarantee range:+5 ℃ to+20 ℃; Relative humidity: ≤ 90% RH.

12.3 Gas source: 0.4MPa.

12.4 Venue: flat and well ventilated; Leave appropriate space for use and maintenance.