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    浸滲是什么What is infiltration

    • 分類:浸滲論壇
    • 作者:
    • 來源:
    • 發布時間:2021-12-31 14:24
    • 訪問量:

    【概要描述】浸滲,又稱浸漬,浸透,滲透。在臺灣及日本稱為含浸。英文單詞為impregnation,poroussealing。它是一種(細縫)滲透密封工藝。將密封介質(通常是低粘度液體)通過自然滲透(即微孔自吸)、抽真空和加壓等方法滲入微孔(細縫)中,將縫隙填充滿,然后通過自然(室溫)、冷卻或加熱等方法將縫隙里的密封介質固化,達到密封縫隙的作用。

    浸滲是什么What is infiltration

    【概要描述】浸滲,又稱浸漬,浸透,滲透。在臺灣及日本稱為含浸。英文單詞為impregnation,poroussealing。它是一種(細縫)滲透密封工藝。將密封介質(通常是低粘度液體)通過自然滲透(即微孔自吸)、抽真空和加壓等方法滲入微孔(細縫)中,將縫隙填充滿,然后通過自然(室溫)、冷卻或加熱等方法將縫隙里的密封介質固化,達到密封縫隙的作用。

    • 分類:浸滲論壇
    • 作者:
    • 來源:
    • 發布時間:2021-12-31 14:24
    • 訪問量:
    詳情

    浸滲,又稱浸漬,浸透,滲透。在臺灣及日本稱為含浸。英文單詞為impregnation,poroussealing。它是一種(細縫)滲透密封工藝。將密封介質(通常是低粘度液體)通過自然滲透(即微孔自吸)、抽真空和加壓等方法滲入微孔(細縫)中,將縫隙填充滿,然后通過自然(室溫)、冷卻或加熱等方法將縫隙里的密封介質固化,達到密封縫隙的作用。

    可充當浸滲劑的材料有很多,如水、蠟、某些植物油、鹽溶液(水玻璃)、金屬、樹脂。能在當代工業化生產里廣泛使用的主要是水玻璃、金屬、樹脂。

            水玻璃作為浸滲劑出現較早,多用于鑄件的縫隙密封。其特點是價廉,含有大量的水,靠揮發水固化,因此收縮較大,合格率低。另外被其處理過的零件清洗不干凈,生產效率低,浸滲場地臟?,F越來越多地被樹脂代替。

            金屬作為浸滲劑主要指低熔點金屬,如銅(銅合金)、錫等。在粉末冶金行業用得較多。

            樹脂作為浸滲劑出現的早期是某些合成樹脂,有毒性。后來無毒的樹脂出現,在鑄件、粉末冶金件得到越來越廣泛應用。其特點是粘度低(?。?,滲透能力強,合格率高,生產效率高。被其處理的零件容易清洗,浸滲場地清潔

            鑄造過程中產生的氣孔疏松等缺陷是造成鑄件滲漏的直接原因。尤其在機加工及裝配完成后再進行滲漏檢測,滲漏零部件造成的報廢損失更是尤其巨大。在生產線上應用浸滲技術已經成為行業共識。目前,眾多的企業已將浸滲作為一道必不可少的工序排進工藝文件?!∧壳?,浸滲技術已廣泛應用于汽車、摩托車、火車、空調制冷、航空等行業??捎行疃潞谏饘勹T件(鑄鐵、鑄鋼等);有色金屬鑄件(鋁合金、鎂合金、銅合金、鋅合金等);粉末冶金件、陶瓷件等缺陷。

     

    nfiltration, also known as impregnation, impregnation, infiltration. In Taiwan and Japan, it is called immersion. The English word for impregnation, poroussealing. It is a (fine seam) osmotic sealing process. The sealing medium (usually low viscosity liquid) through natural penetration (micropore self-priming), vacuum and pressure into the micropore (slit), filling the gap, and then through natural (room temperature), cooling or heating methods will be the gap in the sealing medium curing, to achieve the role of sealing gap.

    There are many materials that can act as leachants, such as water, wax, some vegetable oils, salt solutions (sodium silicate), metals, resins. Can be widely used in contemporary industrial production is mainly sodium silicate, metal, resin.

    As a leaching agent, sodium silicate appeared earlier and was mostly used for gap sealing of castings. It is characterized by low price, contains a lot of water, curing by volatile water, so the shrinkage is larger, the pass rate is low. In addition, the processed parts are not clean, the production efficiency is low, and the infiltration site is dirty. It is increasingly being replaced by resin.

    Metal as a leaching agent mainly refers to low melting point metals, such as copper (copper alloy), tin, etc. It is widely used in powder metallurgy industry.

    The early emergence of resins as leachants is some synthetic resins, toxic. Later non-toxic resin appeared, in casting, powder metallurgy parts are more and more widely used. It is characterized by low viscosity (dilute), strong permeability, high pass rate, high production efficiency. The parts treated by it are easy to clean, and the infiltration site is clean

    Porosity and other defects in casting process are the direct causes of casting leakage. Especially in the machining and assembly after the completion of leakage detection, leakage parts caused by the scrap loss is especially huge. The application of infiltration technology in production line has become an industry consensus. At present, many enterprises have infiltration as an essential process into the process file. At present, infiltration technology has been widely used in automobile, motorcycle, train, air conditioning refrigeration, aviation and other industries. It can effectively fill and block ferrous metal castings (cast iron, cast steel, etc.); Non-ferrous metal castings (aluminum alloy, magnesium alloy, copper alloy, zinc alloy, etc.); Defects in powder metallurgy parts, ceramic parts, etc.

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    頭尾

    發布時間:2022-01-11 20:01:23

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