浸渗，又称浸渍，浸透。汉语词汇。意思是渗透。

　　中文名：浸渗 又 名：渗透

　　别 称：浸透 材 料：浸渗液

　　何为浸渗

　　浸渗, 又称浸渍，浸透，渗透。在台湾及日本称为含浸。英文单词为impregnation，porous sealing。它是一种微孔(细缝)渗透密封工艺。将密封介质(通常是低粘度液体)通过自然渗透(即微孔自吸)、抽真空和加压等方法渗入微孔(细缝)中，将缝隙填充满，然后通过自然(室温)、冷却或加热等方法将缝隙里的密封介质固化，达到密封缝隙的作用。

　　常见的浸渗剂

　　可充当浸渗剂的材料有很多，如水、蜡、某些植物油、盐溶液(水玻璃)、金属、树脂。能在当代工业化生产里广泛使用的主要是水玻璃、金属、树脂。

　　水玻璃浸渗剂的特性

　　水玻璃作为浸渗剂出现较早，多用于铸件的缝隙密封。其特点是价廉，含有大量的水，靠挥发水固化，因此收缩较大，合格率低。另外被其处理过的零件清洗不干净，生产效率低，浸渗场地脏。 现越来越多地被树脂代替。

　　金属浸渗剂的特性

　　金属作为浸渗剂主要指低熔点金属，如铜(铜合金)、锡等。在粉末冶金行业用得较多。

　　树脂浸渗剂的特性

　　树脂作为浸渗剂出现的早期是某些合成树脂，有毒性。后来无毒的树脂出现，在铸件、粉末冶金件得到越来越广泛应用。其特点是粘度低(稀)，渗透能力强，合格率高，生产效率高。被其处理的零件容易清洗，浸渗场地清洁。

　　有机浸渗剂第三代

　　1992年开始出现合成酯类浸渗剂，属于的第三代，替代树脂浸渗剂，其特点是容易清洗，不堵塞工件的螺丝孔、工艺孔，并且具有耐热，耐溶剂，耐腐蚀，耐冷热冲击等优异性能，目前在国外发达工业国家得到了广泛的应用。

　　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.

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