浸滲，又稱浸漬，浸透。漢語詞匯。意思是滲透。

　　中文名：浸滲 又 名：滲透

　　別 稱：浸透 材 料：浸滲液

　　何為浸滲

　　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，porous sealing。它是一種微孔(細(xì)縫)滲透密封工藝。將密封介質(zhì)(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(xì)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(zhì)固化，達(dá)到密封縫隙的作用。

　　常見的浸滲劑

　　可充當(dāng)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(dāng)代工業(yè)化生產(chǎn)里廣泛使用的主要是水玻璃、金屬、樹脂。

　　水玻璃浸滲劑的特性

　　水玻璃作為浸滲劑出現(xiàn)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(fā)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(chǎn)效率低，浸滲場地臟。 現(xiàn)越來越多地被樹脂代替。

　　金屬浸滲劑的特性

　　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(yè)用得較多。

　　樹脂浸滲劑的特性

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

　　有機浸滲劑第三代

　　1992年開始出現(xiàn)合成酯類浸滲劑，屬于的第三代，替代樹脂浸滲劑，其特點是容易清洗，不堵塞工件的螺絲孔、工藝孔，并且具有耐熱，耐溶劑，耐腐蝕，耐冷熱沖擊等優(yōu)異性能，目前在國外發(fā)達(dá)工業(yè)國家得到了廣泛的應(yīng)用。

　　Impregnation, also known as impregnation, infiltration. Chinese vocabulary. Means penetration.

　　Chinese name: infiltration, also known as: infiltration

　　Alias: impregnating material: impregnating liquid

　　What is impregnation

　　Infiltration, also known as impregnation, impregnation, penetration. It is called impregnation in Taiwan and Japan. The English word is impregnation, porous sealing. It is a microporous (slit) penetration sealing process. The sealing medium (usually a low-viscosity liquid) is infiltrated into the micropores (slits) by means of natural penetration (ie, micropore self-priming), vacuuming and pressure, and the gaps are filled, and then through natural (room temperature), cooling Or heating and other methods to solidify the sealing medium in the gap to achieve the effect of sealing the gap.

　　Common infiltrators

　　There are many materials that can act as infiltrators, such as water, wax, certain vegetable oils, salt solutions (water glass), metals, resins. The main ones that can be widely used in contemporary industrial production are water glass, metal and resin.

　　Characteristics of water glass impregnants

　　Water glass appeared earlier as an infiltrating agent and was mostly used for gap sealing of castings. It is characterized by low price, containing a large amount of water, and curing by volatile water, so the shrinkage is large and the pass rate is low. In addition, the parts treated by it are not clean, the production efficiency is low, and the infiltration site is dirty. It is increasingly being replaced by resin.

　　Properties of metal infiltrators

　　Metal as an infiltrant mainly refers to low melting point metals, such as copper (copper alloy), tin, etc. It is used more in the powder metallurgy industry.

　　Characteristics of resin infiltrant

　　The early appearance of resin as an infiltrating agent was some synthetic resins, which were toxic. Later, non-toxic resins appeared and were more and more widely used in castings and powder metallurgy parts. It is characterized by low viscosity (thin), strong penetration ability, high pass rate and high production efficiency. The parts handled by it are easy to clean, and the impregnation site is clean.

　　The third generation of organic infiltrant

　　In 1992, synthetic ester impregnants began to appear. They belong to the third generation and replace resin impregnants. They are easy to clean, do not block screw holes and process holes of workpieces, and are heat-resistant, solvent-resistant and corrosion-resistant. It has excellent properties such as resistance to cold and thermal shock, and has been widely used in developed industrial countries abroad.