塑料溫脆化試驗(yàn)儀采用全封閉與電子制冷相結(jié)合的低溫制冷器,替代傳統(tǒng)的二氧化碳干冰冷劑作為冷浴的冷卻手段,根據(jù)GB/T5470(等同于ISO974-80)標(biāo)準(zhǔn)規(guī)定的試驗(yàn)方法,測(cè)定軟質(zhì)塑料的脆化溫度.由制冷壓縮機(jī)組, 冷浴,沖擊裝置和溫度控制箱三部分組成. 冷浴溫度由數(shù)字溫度控制儀控制,控溫. 沖擊裝置采用加速垂直沖擊方法.
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 dial temperature control instrument control, precise temperature control. Impact device with vertical impact acceleration.
技術(shù)參數(shù):
Technical parameters:
制冷方式:復(fù)合式制冷
Refrigeration mode: compound refrigeration
冷頭尺寸:190*150*80mm
Cold head size: 190*150*80mm
冷浴容積:202*164*118mm
Cold bath volume: 202*164*118mm
溫度范圍:室溫— -40度
Temperature range: - at room temperature -40 degrees
恒溫: ±0.5度
Constant temperature accuracy: 0.5 degrees
沖擊速度:沖擊時(shí)和沖擊后5mm范圍內(nèi)試驗(yàn)速度為200±20cm/s
Impact speed: the test speed is 200 + / - 5mm in the range of 20cm/s after impact.
工作電源:AC220±10% 50HZ
Power supply: AC220 + 10% 50HZ
試樣裝夾量:60片
Sample size: 60
溫脆化試驗(yàn)儀使用方法：
Method for the use of ultra low temperature embrittlement tester:
1. 儀器后側(cè)與墻壁的距離不得小于0.5米，有利于制冷壓縮機(jī)組的通風(fēng)。
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. 在冷浴內(nèi)注入工業(yè)酒精，酒精的液面應(yīng)距冷槽口20mm以下，以浸沒(méi)夾具為好。
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. 請(qǐng)注意儀器接通電源后，冷浴溫度由溫度控制儀自動(dòng)控制，冷浴溫度開(kāi)始下降。在降溫過(guò)程中，應(yīng)升高沖擊錘，使其離開(kāi)工作介質(zhì)，以免沖擊錘帶走冷量。
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. 沖擊錘操作方法：
4 hammer operation method:
1). 手柄逆時(shí)針旋轉(zhuǎn)時(shí)，沖擊錘上升，注意上升速度不能過(guò)快。
1). When the handle rotates counterclockwise, the impact hammer is rising, and the speed of attention can not be too fast.
2). 沖擊錘下降時(shí)，手柄順時(shí)針旋轉(zhuǎn)，注意旋轉(zhuǎn)時(shí)應(yīng)，以減少?zèng)_擊錘下落時(shí)升降齒條的阻力。在每次沖擊后應(yīng)將沖錘提起，使其離開(kāi)工作介質(zhì)。
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. 溫度控制的操作方法：
5 operation method of temperature control:
控溫需重新設(shè)定時(shí)，可按SET設(shè)置鍵，待設(shè)定溫度指示窗出現(xiàn)SO時(shí)即可進(jìn)行設(shè)定，按移位鍵選定設(shè)置位置，再根據(jù)需要設(shè)定數(shù)字按加數(shù)鍵或減數(shù)鍵，設(shè)定完畢后再按SET設(shè)置鍵，即可進(jìn)入自動(dòng)溫度控制狀態(tài)。
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 dial 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. 試樣的試驗(yàn)操作方法按GB8948,8949-88（人造革）試驗(yàn)方法進(jìn)行。
6 test operation method of the test sample by GB-88 (artificial leather) test method.
7. 制冷壓縮機(jī)不允許頻繁啟動(dòng)，關(guān)機(jī)后待冷浴溫度回到+10℃后才能再啟動(dòng)
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
