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    91视频下载大全在噴漆前需要注意哪些事項?

    作者:admin來源:http://www.bolomie.com/時間:2021-10-25

    超聲波清洗原理,由超聲波發生器發出的高頻振蕩電信號,通過換能器轉化成機械振蕩而傳播到介質—清洗溶液中,超聲波在清洗液中疏密相間地向前輻射。當超聲波壓強達到一個大氣壓時,發射功率麵密度可達0.35W/cm?,這時超聲波的音波壓強峰值區就可接近真空或負壓,這時無數細小的空化氣泡形成並成長。當超聲波壓強反向並達大值時氣泡破裂,可產生約上千萬MPa大氣壓的瞬間強(裂)衝擊波及局部高溫的物理現象。
    The principle of ultrasonic cleaning is that the high-frequency oscillation electrical signal sent by the ultrasonic generator is transformed into mechanical oscillation through the transducer and transmitted to the medium cleaning solution. The ultrasonic is radiated forward in the cleaning solution. When the ultrasonic pressure reaches an atmospheric pressure, the emission power area density can reach 0.35w/cm?, At this time, the peak pressure area of ultrasonic wave can be close to vacuum or negative pressure. At this time, countless small cavitation bubbles form and grow. When the ultrasonic pressure reverses and reaches the maximum value, the bubble breaks, which can produce an instantaneous strong (crack) impact of about tens of millions of MPA atmospheric pressure and local high temperature.
    這種由無數個細小空化氣泡破裂而產生的衝擊波,連續不斷地衝擊清洗物件零件表麵,使工件表麵和縫隙中的汙垢迅速被衝刷下來,從而達到工件表麵淨化目的。
    This shock wave generated by the rupture of countless small cavitation bubbles continuously impacts the surface of the cleaned parts, so that the dirt on the workpiece surface and gap can be washed down quickly, so as to achieve the purpose of workpiece surface purification.
    山東91视频破解版
    超聲波清洗實質是清洗介質的化學作用和超聲“空化”效應的物理作用相結合,因而比浸泡清洗單化學作用大大提高了清洗效率與效果。
    The essence of ultrasonic cleaning is the combination of the chemical action of cleaning medium and the physical action of ultrasonic "cavitation" effect, which greatly improves the cleaning efficiency and effect compared with immersion cleaning.
    超聲波清洗在應用到噴漆前處理時,需要注意:
    When ultrasonic cleaning is applied to the pre-treatment of painting, attention shall be paid to:
    1、要重視清洗液的合理選擇,大量生產中要高度重視清洗液的過濾,否則渾濁的清洗液會引起零件的新汙染。清洗度要求嚴的工件,可多設幾道漂洗,後應用離子水漂洗。
    1. Pay attention to the reasonable selection of cleaning fluid, and attach great importance to the filtration of cleaning fluid in mass production, otherwise the turbid cleaning fluid will cause new pollution of parts. For the workpiece with strict cleaning requirements, several more rinsing can be set, and finally rinse with ionic water.
    2、要注意零件廢液對下道槽液的汙染。
    2. Pay attention to the pollution of part waste liquid to the lower tank liquid.
    3、前處理工藝要注意滿足鋼件、鋁鑄件和組件如減振器總成對清洗、磷化和烘幹的不同要求。
    3. The pretreatment process shall pay attention to meet the different requirements for paired cleaning, phosphating and drying of steel parts, aluminum castings and components such as shock absorber assembly.
    4、自動線上的零件掛具應盡可能減小對超聲波作用的影響,並應兼顧到靜電噴漆時的導電要求。
    4. The part hanger on the automatic line shall minimize the impact on the ultrasonic action, and shall take into account the conductive requirements during electrostatic painting.
    5、銅件噴漆前處理的磷酸鹽轉化膜應滿足GB6807-86標準要求。
    5. The phosphate conversion film of copper parts before painting shall meet the requirements of gb6807-86.
    6、超聲波前處理工藝應與後續噴漆工藝很好銜接,並應滿足噴漆工藝對前處理的要求等。
    6. The ultrasonic pretreatment process shall be well connected with the subsequent painting process, and shall meet the pretreatment requirements of the painting process.
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