什么是表面处理钢丝螺套？

[ 时间：2015-07-28 点击：3924 ]

表面处理钢丝螺套

InsertsCoatings and Plating

钢丝螺套是一种新型的螺纹紧固件，装入产品后能符合国际标准高精度内螺纹，其性能优于直接攻丝形成的螺纹。

Wire thread insert is akind of new-style threaded fastener, which can accord with high precision internalthread, and its performance is superior to the thread formed by direct tapping.

螺纹护套按尺寸分类为：公制和美制。

According to the size, wirethread insert can be divided into metric and imperial.

螺纹护套按镀层分类为：无镀层，干性润滑剂涂层（二硫化钼），镀镉，Primer FreeTM，镀银。另外有染色，镀彩锌等钢丝螺套。

According to the plating,wire thread insert can be divided into none plating, dry lubricant coating (molybdenumdisulfide), cadmium plating, Primer Free TM and silver plating. Besides, therestill have stained wire thread inserts and zinc plated wire thread inserts.

表面处理是在基体材料表面上人工形成一层与基体的机械、物理和化学性能不同的表层的工艺方法。表面处理的目的是满足产品的耐蚀性、耐磨性、装饰或其他特种功能要求。对于金属铸件，我们比较常用的表面处理方法是，机械打磨，化学处理，表面热处理，喷涂表面。表面处理就是对工件表面进行清洁、清扫、去毛刺、去油污、去氧化皮等。

Surface treatment is a surfaceprocess method that formed on the surface of substrate manually, which isdifferent from mechanical, physical and chemical properties of the substrate.The purpose of the surface treatment is to satisfy the corrosionresistance, abrasion resistance, decorative features, or other specialrequirements of the product.Formetal castings, the surface treatment method we more used commonly: mechanicalgrinding, chemical treatment, surface heat treatment, surface coating. Surfacetreatment is to clean, deburr, degrease, and descale the surface of work piece andso on.

镀镉（Cd）钢丝螺套抗蚀性、润滑性、耐磨性、导电性、电磁性、耐热性更强。这种螺套广泛应用于航空、航海和电子工业中。

Cadmium Plated Wire Thread Inserts have stronger corrosion resistance, lubricity, wear resistance,electrical conductivity, electromagnetic and heat resistance. This kind of wirethread inserts are widely used in the aviation, marine and electronicsindustries.

镀镉（Cd）螺套的表示方法是在钢丝螺套的标记后加上后缀镉的化学元素符号“-Cd” 如，“8×1.25×8-Cd”：公称直径为8mm、螺距为1.25mm、自由状态下圈数为8圈的镀镉钢丝螺套。

Cadmium plated wire threadinserts’ marking method: add the chemical elements symbol”-Cd” to the behind ofwire thread inserts. For example:“8×1.25×8-Cd”： Cadmium plated wire thread inserts of nominaldiameter 8mm、thread pitch 1.25mm and 8 cycles in free state.

镀银（Ag）钢丝螺套主要在于表面的镀银层，镀银层的主要作用是即可以防腐蚀，又可以作为紧固件的固体润滑剂。银在空气中会失去光泽，但可以在华氏1600度下工作。所以，利用其耐高温和润滑的特性，用于在高温下工作的紧固件，以防止螺栓、螺母的氧化咬死。由于成本原因，螺母使用镀银，螺栓可以不用，有时小螺栓也可以镀银。

Silver PlatingWire Thread Inserts: the most important is the silver coating on the surface.The main role of the silver coating is to prevent corrosion, andcan be used as solid lubricant of fasteners.Silver may lose luster in the air, but can operate at 1600degrees Fahrenheit.Therefore, usingthe properties of its high temperature and lubrication, silver plated wire thread inserts can be used in the fasteners workingat high temperatures, in order to prevent the oxidation of bolts and nuts.

Recommended toreduce galling of threads at high temperatures

For use up to1200˚F / 650°C

MaterialSpecifications: QQ-S-365 / SAE AMS 2411 /EN2786 / DTD939

Color: Silver White

染色钢丝螺套：螺纹护套通常为不锈钢材料本色，有特殊要求的情况下涂色。ColorCoding Wire Thread Inserts: Wirethread inserts are stainless steel materials natural color usually, and paintin special conditions.

Facilitatesverification of insert installation

Allows forquick identification of similar size inserts

Colors: red,green, blue and yellow

In general allscrewlock inserts (imperial and metric dimensions) are supplied with a redcoloring in accordance with NASM21209.

Colorings ofthe thread inserts for identification purpose according to customer specificrequirements are also available.

绿色：为普通型螺纹护套西德福滤芯；

Green: Free-Running Inserts

黄色：为镀镉型螺纹护套；

Yellow: Cadmium plating Wire Thread Inserts

Provides highcorrosion resistance

Provideslubrication to prevent galling

(Notrecommended for new designs due to its toxic nature)

MaterialSpecifications: QQ-P-416 Type II / DEF STD 03-19

深灰色：为干膜润滑型螺纹护套；

Grey: DryFilm Lubricant Wire Thread Inserts

Providesadditional lubrication in high friction applications

Hightemperature resistance up to 400°F / 240°C

Highlyrecommended with screwlock inserts

Mildlycorrosion resistant

MaterialSpecifications: MIL-L46010 / AS5272