1-Products Name:Brass Inner End Cap for Fuse
2-Base Material:
Brass Stamping Parts:65% Brass H65(CuZn36/C2700),tensile strengthσb MPa≥440
3-Surface Treatments:
(1)Silver plating
(2)Bright tin plating
(3)Lead-free fog tin plating
(4)Nickel plating
(5)Ultrasonic cleaning
4-Free Samples:10-50pcs is allowed
5-Lead Time:Orders 7-10days,Samples 20-25days(including the tooling/die production of Copper Stamped Part);
6-Packing: Plastic inside and carton/pallet outside
7-Certifications: ISO9001,IATF16949,RoHS,REACH,etc.
8-Production Capacity: 50,000,000 pcs/month
9-Applications:PV Fuse,EV Fuse,PDU Fuse,Energy Storage Fuse,UPS DC Links,NH Fuse,BS Fuse,Fast Fuse,etc.
Material properties of Fuse End Caps Brass material
The performance of H65 Brass Inner Cap is between H68 and H62, the price is cheaper than H68, and it also has higher strength and plasticity, Brass Inner End Cap can well withstand cold and hot pressure processing, and has a tendency to corrosion cracking.Mainly used in the production of EV Fuse Brass Inner Outer Cap,PV Fuse Outer Brass Cap, Nickel Plated Brass End Caps,mainly used as electrical, thermal, corrosion-resistant equipment.
1.Brass of Fuse Inner Cap has very good plasticity and high strength, good machinability, easy welding, and general corrosion stability.
2.Brass of Brass End Cap has high strength and plasticity, can well withstand cold and hot pressure processing, and has a tendency to corrosion cracking.
3.H65 brass of Fuse End Caps has good mechanical properties and wear resistance, and can be used to manufacture precision instruments and Fuse Contact parts.
The differences between electroplating matte (fog) tin and bright tin of Fuse Contact Cap
Matte tin plating Fuse Copper Contact Cap is a coating with good solderability and certain corrosiveness.Because of its easy welding and good conductivity, it is widely used in electrical and electronic parts Copper Outer Cap for Industrial Power Fuse and Copper Outer Cap for gG gL Fuse that need to be welded.
1. Matte tin plated Copper End Caps surface is dull and dull. Bright tin Copper Cap surface is bright and beautiful.
2. Matte tin plating crystals Outer Cap are coarser. Bright tin Outer Cap is added with brightening agent to make the crystals finer and shiny.
3. Matte tin Fuse End Plate welding is better. Bright tin Fuse End Plate solders poorly and tends to produce tin whiskers.
4. Fog tin Round Polished Copper end Cap has better high temperature resistance, less bright tin Fuse Copper end Cap, and is prone to the problem of secondary melting of tin.
5. The cost of fog tin Fuse Copper Cap Fitting is higher than that of bright tin Fuse Copper Cap Fitting.
6. Matte tin Fuse Metal End Cap is generally used for soldering terminals or SMT parts.Bright tin Fuse Metal End Cap is used in places with appearance requirements and cold-pressed connection terminals.
Analysis of the Reasons for Poor Brazing Fuse Contact Cap Quality
1. Poor filling, some gaps are not filled,reasons as below:
(1) The joint of the Copper Cap and Contact design is unreasonable, the assembly gap is too large or too small, and the parts are skewed during assembly.
(2) The flux is not suitable, such as poor activity, too large difference between the melting temperature of the flux and the solder, and poor ability of the flux to fill the gap; or the gas purity is low during gas shielded brazing.
(3) Improper selection of solder Copper End Caps and Fuse Contact, such as poor wetting of solder and insufficient amount of solder.
⑷ Improper placement of solder Cap Copper and Contact.
⑸The preparation work of the Custom Copper Caps and Fuse Contact before brazing is not good, such as dirty cleaning.
⑹ The brazing temperature of the Copper End Cap and Fuse Contact is too low or the distribution is uneven.
2. Brazing seam pores,reasons as below:
(1) Improper selection of joint gap for End Cap Copper and Fuse Terminal.
(2) The parts of Copper Metal End Cap and Fuse Contact are not cleaned before brazing.
(3) The flux removal effect or the protective gas removal effect is weak.
⑷ During brazing of Copper End Cap Fitting, the solder releases gas or the solder is overheated.
3. Brazing seam slag inclusion,reasons as below:
⑴The amount of flux used is too much or too little.
(2) Improper selection of joint Copper Outer Cap clearance.
(3) Solder fills the joints from both sides of the joint Copper Slip Cap.
⑷ The melting temperature of the solder Copper Slip Cap Fitting and the flux does not match.
⑸ The proportion of flux is too large.
⑹ Uneven heating.
4. Brazing seam cracking,reasons as below:
(1) Due to the different thermal expansion coefficients of dissimilar base metals Copper Outer Cap, the internal stress formed during the cooling process is too large.
(2) The brazing heating of the same material Copper End Plate is uneven, resulting in inconsistent shrinkage during the cooling process.
(3) When the solder solidifies, the parts Copper End Caps Round move mutually.
⑷ The crystallization temperature interval of the solder is too large.
⑸The brazing seam is too brittle.
5. Solder loss,reasons as below:
(1) The brazing of Copper End Cap Solder Fittings temperature is too high or the holding time is too long.
(2) Improper placement of the brazing material Welding Fuse Copper Pipe End Cap so that it does not play a capillary role.
(3) The local gap of Copper Cap High Pressure OEM is too large.
6. The base metal is eroded,reasons as below:
(1) The brazing temperature of Copper Outer End Cap is too high and the holding time is too long.
(2) The effect between the base metal Copper Cap for BS(British Standard) Type Fuse and the solder is too severe.
(3) The amount of solder is too large.
Contact Information:
Mr.Terry Young (Sales Manager&Technology Engineer)
Apollo Electronic Components (Xiamen) Co.,Ltd
Xiamen Apollo Stamping Welding Technology Co., Ltd
Add:225#,Jinshang Road,Huli District,Xiamen City,Fujian Province,China,361009
Tel&Fax: 0592-5765084, Mob/WhatsApp/WeChat: 0086-13859903038 ,QQ: 1260358661
Email: yfd@china-electronic-components.com
Web: www.china-electronic-components.com , www.stamping-welding.com
Since 1990,professional in Silver Contact Rivet&Core&Screw Terminal for Relay&Switch&Contactor&Breaker ect Riveting&Welding solutions !