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Specifications
electrical brass contacts
used in Megavolt Power Grid
hardness: HV 145
50% cost reducti
button contacts
About button contacts
| Application | applied in megavolt ultra-high voltage grid (highest voltage level in the world) and exported to Toshiba (Japan) | ||
| Client Problem | Toshiba sets high standard on the performance, dimension, accuracy and surface smoothness of the contact finger while manufacturers can hardly meet the standard | QINHAN Solution | with full understanding of the demands of Toshiba, QinHan realizes once forming by cold forging process |
| Benefits | the hardness is HB80; the rate of finished products is up to 100% and the cost is reduced by more than 50%. | ||
Details of button contacts
Weight(kg) |
Material |
Surface Treatment |
Tolerance(min) |
0.01-0.15 |
Cu-ETP/Cu-OF |
silver coating |
0.1mm |
Product show
Production process
Inspection
Company Profile
QinHan Cold Forging is a certificated Hi-tech company specialized in precise cold forging. With 20 years successful track record, we have established long term partnership with renowned clients like Toshiba, Yaskawa, Hyosung, Aviation Industry Corporation of China, and State Grid Corporation of China, etc.
Competitive Highlights
• Strategic Partner of Mega-volt Grid Project
• Qualified Supplier of PG-Toshiba
• Qualified Supplier of Aviation Precision Machining Corp
• 20 registered patents
• 13+ years aggregated experience of R&D team
• 400+ developed products
Our patents
Production Details
| Materials |
1. steel: carbon steel, stainless steel, alloy steel, tool steel etc
2. aluminum:alloy aluminum, 6 series alloy, 7 series alloy etc
3. copper, bronze, brass, T2 copper ect
4. others:titanium alloy, magnesium alloy, zinc alloy, high temperature alloy etc
|
| Process | drawing, sampling, or even a concept |
| Technical fields |
1. cold forging, heat forging, stamping, cold extrusion, heat extrusion, spining etc
2. machining:turning, milling, drilling, boring, grinding, planing, treading etc
3. mass finishing:polishing, deburring, sandblasting, shot blasting ect
|
| Heat treatment |
1. annealing, normalizing, quenching, tempering, solution and ageing
2. heat machine: high-frequency heating furnace, electrically heated furnace, electric ovens
|
| Surface treatment | silver plating, chrome plating, galvanizing, tin plating etc |
| Inspection equipment | Vision Projector Measurement Machine, Brinell Hardness, Leeb Hardness Tester,Rockwell Hardness, Eddy Conductivity Instrument, Reading Microscope, Embedded Ultrasonic Detector |
| Max/Minium |
1. weight:1.9g---100kg
2. dimension:maximum 700mm
3. outside diameter:maximum 500mm
4. hole depth: maximum 400 mm(no maching)
5. wall thickness: minimum 1mm
|
Production & Quality Control System
Our Clients
Send Inquiry to This Supplier
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