什么是表面處理鋼絲螺套？

[ 時間：2015-07-28 點擊：3829 ]

表面處理鋼絲螺套

InsertsCoatings and Plating

鋼絲螺套是一種新型的螺紋緊固件，裝入產(chǎn)品后能符合國際標準高精度內(nèi)螺紋，其性能優(yōu)于直接攻絲形成的螺紋。

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.

螺紋護套按尺寸分類為：公制和美制。

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

螺紋護套按鍍層分類為：無鍍層，干性潤滑劑涂層（二硫化鉬），鍍鎘，Primer FreeTM，鍍銀。另外有染色，鍍彩鋅等鋼絲螺套。

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.

表面處理是在基體材料表面上人工形成一層與基體的機械、物理和化學(xué)性能不同的表層的工藝方法。表面處理的目的是滿足產(chǎn)品的耐蝕性、耐磨性、裝飾或其他特種功能要求。對于金屬鑄件，我們比較常用的表面處理方法是，機械打磨，化學(xué)處理，表面熱處理，噴涂表面。表面處理就是對工件表面進行清潔、清掃、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.

鍍鎘（Cd）鋼絲螺套抗蝕性、潤滑性、耐磨性、導(dǎo)電性、電磁性、耐熱性更強。這種螺套廣泛應(yīng)用于航空、航海和電子工業(yè)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.

鍍鎘（Cd）螺套的表示方法是在鋼絲螺套的標記后加上后綴鎘的化學(xué)元素符號“-Cd” 如，“8×1.25×8-Cd”：公稱直徑為8mm、螺距為1.25mm、自由狀態(tài)下圈數(shù)為8圈的鍍鎘鋼絲螺套。

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.

鍍銀（Ag）鋼絲螺套主要在于表面的鍍銀層，鍍銀層的主要作用是即可以防腐蝕，又可以作為緊固件的固體潤滑劑。銀在空氣中會失去光澤，但可以在華氏1600度下工作。所以，利用其耐高溫和潤滑的特性，用于在高溫下工作的緊固件，以防止螺栓、螺母的氧化咬死。由于成本原因，螺母使用鍍銀，螺栓可以不用，有時小螺栓也可以鍍銀。

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

染色鋼絲螺套：螺紋護套通常為不銹鋼材料本色，有特殊要求的情況下涂色。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.

綠色：為普通型螺紋護套西德福濾芯；

Green: Free-Running Inserts

黃色：為鍍鎘型螺紋護套；

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：為干膜潤滑型螺紋護套；

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