塑料超低温脆化试验仪采用进口全封闭与电子制冷相结合的低温制冷器,替代传统的二氧化碳干冰冷剂作为冷浴的冷却手段,根据GB/T5470(等同于ISO974-80)标准规定的试验方法,测定软质塑料的脆化温度.由制冷压缩机组, 冷浴,冲击装置和温度控制箱三部分组成. 冷浴温度由数字温度控制仪控制,控温. 冲击装置采用加速垂直冲击方法.

Plastic ultra low temperature embrittlement tester adopts imported closed and combination of electronic refrigeration cryogenic cooler, as a cold bath cooling method instead of the traditional carbon dioxide ice cooling, according to the provisions of the in ISO974-80) standard GB/T5470 (or the equivalent test method, determination of soft plastic brittle transition temperature. By refrigeration compressor, cold bath, impact device and a temperature control box composed of three parts. The cold bath temperature by digital temperature control instrument control, precise temperature control. Impact device with vertical impact acceleration.

技术参数:

Technical parameters:

制冷方式:复合式制冷

Refrigeration mode: compound refrigeration

冷头尺寸:190*150*80mm

Cold head size: 190*150*80mm

冷浴容积:202*164*118mm

Cold bath volume: 202*164*118mm

温度范围:室温—  -40度

Temperature range: - at room temperature -40 degrees

恒温: ±0.5度

Constant temperature accuracy: 0.5 degrees

冲击速度:冲击时和冲击后5mm范围内试验速度为200±20cm/s

Impact speed: the test speed is 200 + / - 5mm in the range of 20cm/s after impact.

工作电源:AC220±10%   50HZ

Power supply: AC220 + 10% 50HZ

试样装夹量:60片

Sample size: 60

超低温脆化试验仪使用方法：

Method for the use of ultra low temperature embrittlement tester:

1. 仪器后侧与墙壁的距离不得小于0.5米，有利于制冷压缩机组的通风。

1 the distance between the rear wall and the wall of the instrument shall not be less than 0.5 meters, which is conducive to the ventilation of the refrigeration compressor unit.

2. 在冷浴内注入工业酒精，酒精的液面应距冷槽口20mm以下，以浸没夹具为好。

2 in the cold bath into industrial alcohol, the alcohol level should be away from the cold notch below 20mm, with good immersion jig.

3. 请注意仪器接通电源后，冷浴温度由温度控制仪自动控制，冷浴温度开始下降。在降温过程中，应升高冲击锤，使其离开工作介质，以免冲击锤带走冷量。

3 Please note that the instrument is connected to the power supply, cold bath temperature by the temperature control instrument automatic control, cold bath temperature began to fall. In the process of cooling, the impact hammer should be raised, so that it leaves the working medium, so as to avoid the impact hammer away cold.

4. 冲击锤操作方法：

4 hammer operation method:

1). 手柄逆时针旋转时，冲击锤上升，注意上升速度不能过快。

1). When the handle rotates counterclockwise, the impact hammer is rising, and the speed of attention can not be too fast.

2). 冲击锤下降时，手柄顺时针旋转，注意旋转时应迅速，以减少冲击锤下落时升降齿条的阻力。在每次冲击后应将冲锤提起，使其离开工作介质。

2). When the hammer drops, the handle rotates clockwise, and the attention should be promptly to reduce the resistance of the lifting rack when the impact hammer drops. After each impact should be raised, so that it leaves the working medium.

5. 温度控制的操作方法：

5 operation method of temperature control:

 控温需重新设定时，可按SET设置键，待设定温度指示窗出现SO时即可进行设定，按移位键选定设置位置，再根据需要设定数字按加数键或减数键，设定完毕后再按SET设置键，即可进入自动温度控制状态。

Temperature control need to reset, press the set button, to be set temperature indicating window appear to be so can be set, press the shift key to select the setting position, according to the needs of digital set according to the addend keys or reduction, after the set then press set set key, you can enter the automatic temperature control state.

6. 试样的试验操作方法按GB8948,8949-88（人造革）试验方法进行。

6 test operation method of the test sample by GB-88 (artificial leather) test method.

7. 制冷压缩机不允许频繁启动，关机后待冷浴温度回到+10℃后才能再启动

7 refrigeration compressor is not allowed to start frequently, after the cold bath temperature to be back to the +10 after the restart to restart