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Product Description Technical information Engineering difficulty

Terminal connector used in socket or battery

1. Material: Brass;
2. Surface treatment: Nickel plating;
3. Process: Progressive stamping --- Nickel plating

1. Size is small as 30*5*15 mm,
2. Structure is complex;
3. precision only accept +/-0.05mm tolerance.

Spring contact used in battery

1. Material: Spring steel;
2. Surface treatment: Nickel over copper plating;
3. Process: Progressive Stamping --- Heat treatment --- Nickel over copper plating

1. Usually nickel plating thickness is 3 to 5 μm, this part requires 8-10μm copper plating and 7-8μm nickel plating;
2. Should pass 24H salt spraying testing, without anti rust oil;
3. Very Elastic, side lips won't be broken after bended 90°oppositely.
4. Workable for high shear force, after soldered on PCB, won't be separated from PCB even apply 900N force.

Flat metal clip used in furniture

1. Material: Spring steel;
2. Surface treatment: Zinc Plating
3. Process: Progressive Stamping --- Heat treatment --- Zinc plating

1. Shape is complex, made progressively in one stamping machine;
2. Number code are made by stamping too;
3. No deformation after the wings are flipped over 150 times when standing 120KG weight.

Spring clip used in auto parts

1. Material: Stainless steel;
2. Surface treatment: None
3. Process: Progressive Stamping --- Degreasing

1. Shape should be exactly round;
2. Structure is complex;
3. precision only accept +/-0.08mm tolerance.

Mounting clip used in construction facility

1. Material: Spring steel
2. Surface treatment: None
3. Process: Progressive Stamping --- Degreasing

1. Structure and shape is complex;
2. All the 12 wings should be parallel on the horizontal vertical direction.
3. No deformation after the wings are flipped over 300 times.

Metal enclosure used in semiconductor controller

1. Material: Aluminum
2. Surface treatment: Oil painting and silk screen
3. Process: Laser cutting and bending --- Riveting ---Brushing --- Oil painting --- Silk screen

1. Need exactly 90 degree angles in corners;
2. Matt Fine Texture, it's made manually, matt size should be symmetrical;
3. Can't paint the inside of the box;
4. Straight strictly on the edge.
5. No scratch at all.

Aluminum Metal box used in power supply

1. Material: SUS and aluminum
2. Surface treatment: None and anodizing
4. Process: Stamping---Punching holes--- Anodizing

1. The aluminum enclosure has many convex and hump, easy to break if tooling is not so good;
2. Stainless steel cover has over 200 holes, meanwhile, the edge between holes are only 0.5mm; easy to break or generate burrs;
3. These two parts should assembly exactly.

SUS metal cover used in construction

1. Material: SUS
2. Surface treatment: Brushing
4. Process: Laser cutting and bending --- Riveting ---Plant bolts --- Welding --- Brushing --- Pickling --- Laser etching

1. 3.5mm stainless steel, hard material, difficult to fabricate;
2. The part should pass 168H salt spray testing;
3. When the bolt is planted, can't be visible on the other side surface, meanwhile when standing 350N strength, the bolt won't fall off;
4. Welding and laser cutting mark should not be visible;
5. No burrs, no sharp edges, smooth feeling when touching;
6. Brushing lines should exactly be parallel, very straight and cannot be distorted;
6. After variety of manufacturing processes, final surface not allow any scratch, stamp or bumps.

Deep drawing part used in military

1. Material: Aluminum
2. Surface treatment: Sand spraying and anodizing
3. Process: Stamping and punching --- Progressive deep drawing for 8 times ---- Sand spraying and anodizing

Material thickness is only 0.5mm,diameter is only 12 mm,but depth is 80mm, very easy to break in deep drawing processes.

Deep drawn part used in 3D printer

1. Material: Stainless steel
2. Surface treatment: Sand spraying and laser etching
3. Process: Stamping and punching --- deep drawing --- punching holes --- Sand spraying --- Laser etching logo

1. 3mm SUS, with 3/4 hardness, hard material, difficult to fabricate;
2. The base have more than 600 holes, edge between holes are small, combine above reason, it's easy to generate burrs, so we deburr by tooling.

Aluminum heat sink used in Set Top BOX

1. Material: Aluminum
2. Surface treatment: None
3. Process:
Progressive Stamping

1. Material thickness is only 0.8mm, but concave depth is 55mm, very easy to break in deep drawing processes;
2. Convex Position is too close to edge, easy to break.

Aluminum extrusion heatsink used in electronic equipment

1. Material: Aluminum
2. Surface treatment: None
3. Process:
Extrusion --- Cutting ----Drilling holes

Edge between each fin is narrow as 2mm.

Spring clamp used in fuel valve

1. Material: Stainless steel;
2. Surface treatment: None
3. Process: Progressive Stamping --- Number mark by tooling ---- Riveting --- Degreasing

1. Structure is complex;
2. Shape should be exactly round;
3. To save time and cost, both number code and riveting are made by progressive stamping

Mounting bracket used in Security machine

1. Material: SPCC
2. Surface treatment: Oil painting
3. Process: Progressive Stamping --- Black oil painting

1. Structure is a little complex;
2. After bending, the part should be round in opposite direction, easy to break, require fantastic craft in shaping process.

RF EMI shielding case used in PCB

1. Material: Nickel silver
2. Surface treatment: None
3. Process:
Progressive Stamping --- Riveting ---- Assembling

1. There are 36 pcs wings around the edges;
2. The base and bottom part should be assembled not tight and not loose;
3. Nickel silver is soft, this part haven't surface treatment, meanwhile scratch or mark are not acceptable;
4. Nice surface without corrosion.

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