How to Reduce Dents and Protrusions in Metal Stamping Parts?
Sep 11, 2025
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How to Reduce Dents and Protrusions in Metal Stamping Parts?
The causes of dents and protrusions in metal stamping parts are mostly due to dust or iron chips adhering to the raw material or mold surface. This not only degrades the appearance quality of the product but also significantly reduces productivity. So, how can we avoid this issue? Below, a precision metal manufacturer summarizes five major methods to reduce dents and protrusions in metal stamping parts.
Inspection and Correction of Drawing Dies: Drawing dies require regular inspection and maintenance to reduce the occurrence of dents and protrusions and maintain stable conditions. The common practice is to use samples to check the bonding scratches on the blank holder and the condition of the machining surfaces (die radius, punch radius).
Inspection and Correction of Trimming Dies: The cause of dents and protrusions after the trimming process is the generation of iron powder during trimming. Therefore, it is essential to observe and avoid iron powder before stamping to prevent dents and protrusions.
Appropriate Robot Arm Speed: For semi-automatic drawing die production, when the drawing punch is at the lower die position and the robot arm speed is too fast, burrs may fall onto the upper part of the punch, causing dents and protrusions. To avoid this issue, we can conduct discharge tests before production and reasonably set the robot arm speed and discharge angle to ensure it does not contact the workpiece or the lower die.
Inspection of Cut Sections: When cutting coiled material, wear and tear of the cutting die can generate many tiny iron chips that adhere to the blade edge. Therefore, before stamping production, it is necessary to inspect the double-cut sections in the material area or along the stamping line and clean the sheet material promptly to remove burrs.
Inspection of Sheet Cleaning Equipment: Before stamping production, it is essential to inspect and adjust the cleaning setup to ensure it can clean the sheet material more effectively. This is highly necessary, and attention must also be paid to the roller gap and the quality of the cleaning oil. The detailed method involves applying red paint to a steel plate and passing it through the cleaning setup. Then, inspect the pattern of red paint removal. If the removal rate does not meet the standard, the cleaning setup must be inspected and adjusted. If cleaning oil is insufficient, it must be replenished promptly.
Titanium product forms available from GNEE
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Grade |
GR1,GR2,GR3,GR5,GR6,GR7,GR9,GR11,GR12, etc. |
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Standard |
ASTM B265,ASTM F136,ASTM F67,AMS4928 |
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Size |
0.5-5.0mm x 1000mm x 2000-3500mm (Thickness x Width x Length) |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Supply status |
M (Y/ R/ ST) |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technics |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Payment terms |
T/T, L/C, D/A, D/P, Escrow, Western Union, PayPal |
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Certificate |
ISO 9001:2008; The third test report; TÜV Rheinland; |
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Delivery time |
7-15days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Production Name |
Titanium Alloy Bar |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Item Name
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Titanium plate
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Type
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GR1, GR2, GR3, GR4, GR5, 6AL4V Eli, GR7, GR9, GR12, GR23,TB3, TB6, TC4, TC6, TC11, TC17, TC18
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Standard
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ASTM B265, AMS4911, AMS4911H, GB/T3621-2007
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Specification
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Hot Rolling: Length 1000-4000mm,Width 400-3000mm,Thickness 4.1-60mm
Cold Rolling :Length 1000-3000mm,Width 400-1500mm,Thickness 0.3-3.0mm |
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Certificate
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ISO 9001:2008
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Supply Ability
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10 Tons per Month
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Delivery
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Within 5~30 days
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Grade
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Grade 1: Pure Titanium, relatively low strength and high ductility.
Grade 2: The pure titanium most used. The best combination of strength, weldability. Grade 3: High strength Titanium, used for Matrix-plates in shell and tube heat exchangers. Grade 5: The most manufactured titanium alloy. Exceedingly high strength. high heat resistance. Grade 7: Superior corrosion resistance in reducing and oxidizing environments. Grade 9: Very high strength and corrosion resistance. Grade 12: Better heat resistance than pure Titanium. Applications as for Grade 7 and Grade 11. Grade 23: Titanium-6Aluminum- 4Vanadium ELI. Alloy for surgical implant application. |
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Application
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Metallurgy, electronics, medical, chemical, petroleum, aerospace, and others.
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Length
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Requied
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Technology
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Hot Rolled Plate (HR)
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Packing
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Standard Package
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Product Name
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High quality 0.1mm 0.2mm 0.3mm 0.4mm 0.5mm thin titanium wire price
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Material
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Pure titanium and Titanium alloy
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GR1/GR2/GR3/Gr4/GR5/GR7/GR9/GR12/Gr5Eli/Gr23
ERTi-1/ERTi-2/ERTi-3/ERTi-4/ERTi-5Eli/ERTi-7/ERTi-9/ERTi-11/ERTi-12
Ti15333/Nitinol Alloy
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Standard
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AWS A5.16/ASTM B863/ASME SB863, ASTMF67, ASTM F136, ISO-5832-2(3) etc
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Shape
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Titanium Coil Wire/Titanium Spool Wire/Titanium Straight Wire
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Wire Gauge
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Dia(0.06--6) *L
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Process
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Bar billets-hot rolling-drawing-annealing-strength-pickling
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Surface
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Polishing, picking, acid washed, black oxide
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Main Technique
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Hot Forged; Hot Rolled; Cold drawn; Straighten etc
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Material Milling Certificate
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According to. EN 10204.3.1
Including Chemical composition and Mechanical property |
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Application
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Welding, Industry, Medical, Aerospace, Electronic etc
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Processing
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CNC Machining Services: CNC Milling, CNC Turning, Laser Cutting,drilling ,Bending, Spining, Wire Cutting, Stamping, Electric
Discharge Machining (EDM) 3-axis-4-axis-5-axis Machining, Comprehensive Processing Services: Sheet Metal fabrication, Stamping, Die Casting, 3D Printing, Injection Molding Rapid Prototype,Moulds etc,Multistep Machining |
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Assembly Services
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Fastening & Splicing, Component Assembly, Full Assembly, Packaging & Labeling
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The materials we can process are• Material
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Aluminum, Stainless Steel, Titanium ,Barss,Copper,Plastic,Alloy Custom material
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Precision Tolerance
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±0.001mm~±0.005mm
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Surface Roughness
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Min Ra 0.1~3.2
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Surface Treatment
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Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated,
sandblasting ,Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
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Production volume
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Low to Medium Volume, Prototype, and Batch Production
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Processing Method
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Custom According to Provided CAD Drawings
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Lead Time
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Short lead Time, Typically 1-4 Weeks
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Quality Control
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Strict Quality Assurance and Inspection Processes
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Packaging
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Secure Packaging to Prevent Damage During Transit
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Certificate
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ISO9001,AS9100D,ISO45001,ISO14001,ROSH,CE etc.
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1-Piece minimum order
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Ability to Provide Samples Before Mass Production
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Customized Precision Parts
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We Look Forward to Receiving Your Customized Requirements and Establishing a Fruitful Partnership.
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GNEE is a specialized manufacturer and exporter of high-quality titanium products, including pipes, sheets, bars, wires, and fabricated parts.
We utilize advanced CNC machining, rolling, and welding equipment to ensure precision manufacturing. All products undergo strict chemical, mechanical, and non-destructive testing to guarantee compliance with international standards.
Our export-safe packaging includes wooden crates and waterproof wrapping to ensure secure delivery. If you have any needs, please feel free to contact us immediately：info@gneemetal.com
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