Paint engineering plastics are widely used in the construction industry, so flame retardants have become an indispensable additive, but currently, halogen-containing flame retardants on the market are potentially harmful to the environment and human health, so To solve this contradiction, some users of engineering plastics have abandoned the application of these plastic additives and switched to engineering plastics that have their own flame retardant properties.
Flame retardant polymers mainly include: polyetheretherketone (PEEK), polyetherimide (PEI), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polyethersulfone (PES), and polydisperse. Vinyl fluoride (PVDF) and liquid crystal polymer (LCP). Other polymers such as PVC, modified polyphenylene ether (PPO), etc. have some flame retardancy, but require a certain amount of additives to enhance this performance.
PEI is an amorphous polymer with a continuous use temperature of 180 ° C. It is highly resistant to hydrocarbons, halogenated solvents, water and automotive liquids with a glass transition temperature of 217 ° C. According to the data provided by PEI supplier GE, the 0.25mm spline flame burning rate is V-0 rated by UL94, and it has low smoke emission, can withstand a variety of chemicals, and has high strength. Modulus and high temperature creep resistance. PEI resins are available in both non-enhanced and enhanced grades. Typical fillers are carbon fiber, fiberglass and certain minerals.
In the manufacture of automotive parts, PEI can replace metal manufacturing dampers, sensors, air conditioners, ignition system components and drivetrain accessories. PEI's flame retardancy and low smoke and low toxic gas emissions also make this material suitable for use on aerospace vehicles such as gas and fuel valves, steering wheels, interior finish surfaces, food trays, and more. Electronic lighting components such as connectors and mirrors made of PEI materials are also used to take advantage of the flame retardancy of the polymer. In addition, PEI can be processed by standard injection molding methods, and the resulting part can have a wall thickness of 0.25 mm. Before processing, PEI should be dried at 140 ° C ~ 150 ° C for several hours.
Flame retardant polymers generally also have other excellent properties such as strength, dimensional stability, chemical resistance and abrasion resistance, etc., but these materials are generally more expensive than those that do not have flame retardancy, however These resins are needed to be used in applications where high performance and high flame retardancy are required.
Clips and Fasteners are most commonly categorized as flat or sheet material that is formed into simple or complicated shapes. Most often, Clips and Fasteners are manufactured using both low and high carbon steels, depending on the application. In some applications, high carbon spring steels are utilized where a spring force is required that cannot be obtained with normal spring forces. When high carbon spring steels are used for manufacturing, it is a standard requirement that the product is heat treated and quenched to a hardness level that allows the product to flex without deforming. Heat treating and oil quenching are commonly used for the hardening process, but an Austemper heat treating process is typically the best practice for eliminating heat treat deformation.
Steels most commonly used in our process for manufacturing Clips and Fasteners are either low carbon, cold rolled steel (without heat treatment), and high carbon spring steels ranging from Grade 1050 to 1095, along with Stainless Steels and precious metals such as Brass, Phosphor Bronze, and Beryllium Copper. Clips and Fasteners that we manufacture typically range in material thickness of .010″ up to .080″, with many of our prototype and short run orders ranging from these sizes. We also have the capability of manufacturing designs in a wide range of shapes and sizes. We can supply Clips and Fasteners with a variety of special finishes or coatings to your specification along with various heat treating requirements.
Clip Materials
|
Material |
Grade |
Specification |
|
High Carbon Spring Steel Strip |
1050 |
ASTM A682 (AISI 1050) |
|
|
1065 |
ASTM A682 (AISI 1060) |
|
|
1070 |
ASTM A682 (AISI 1070) |
|
|
1074 |
ASTM A682 (AISI 1074) |
|
Stainless Steel Strip |
301 |
ASTM A666 |
|
|
302 |
ASTM A666 |
|
|
316 |
ASTM A582 (AISI 316) |
|
|
17-7 PH |
ASTM A693 (631) (AMS 5529) |
|
Non-Ferrous Alloy Wire |
Phosphor Bronze |
ASTM B103 |
|
|
Beryllium Copper |
ASTM B194 |
|
High Temperature Alloy Wire |
Inconel 600 |
ASTM B168 (AMS 5540) |
|
|
Inconel x750 |
AMS 5542 |
|
Low Carbon Steel |
Cold Rolled Steel (CRS) |
ASTM A1008 (AISI 1008/1010) |
Spring Steel Clip,Stainless Steel Clip,Spring Clip,Stainless Clips
Nanpi Jian Tong Hardware Manufacturing Co., Ltd. , http://www.jiantongstamping.com