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    Anas
    Brass honeycomb vent Looks Very Nice
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    Satheesh
    MRI/RF doors are shining with handles, Thank you My friend.
Contact Person : Martin
Phone Number : +8613910301842
Whatsapp : +8613910301842

Hard Plastic Case Non Ferrous Tool Kit with Customized Logo and ESD Safe for Manufacturing Workflow

  • Hard Plastic Case Non Ferrous Tool Kit with Customized Logo and ESD Safe for Manufacturing Workflow
  • Hard Plastic Case Non Ferrous Tool Kit with Customized Logo and ESD Safe for Manufacturing Workflow
Brand Name Jovi
Certification ISO
Model Number 1-cf-7
Document JVVM-NMT-Series SPE and Quo...on.pdf
Minimum Order Quantity 1set
Price $2580
Packaging Details Carton&wooden Box
Delivery Time 7-14days
Payment Terms T/T
Supply Ability 300 Set / Month
Product Details
Blade Material Grade 5 Ti (Ti‑6Al‑4V) Tip Corner Radius <0.03 Mm
Handle Knurling Depth 0.3-0.5 Mm Dielectric Test 1000 V
Tip Hardness 38-42 HRC Insulation Thickness 2 Mm
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Product Description
Screwdriver Components & Materials
Component Material Manufacturing Method Quality Requirement
Blade Grade 5 Ti (Ti‑6Al‑4V) Swiss‑type CNC lathe + grinding Concentricity <0.05 mm
Tip Grade 5 Ti (same as blade) Precision grinding (optical control) Corner radius <0.03 mm (Phillips)
Handle (standard) Brass (C36000) Cast + CNC machined Knurling depth 0.3–0.5 mm
Handle (insulated) Brass core + rubber overmold Injection molded (non‑magnetic rubber) Dielectric test 1000 V
Tang Grade 5 Ti (blade extension) Integral (same piece as blade) Full length through handle
Tip Grinding – The Critical Process

Screwdriver tip geometry determines cam‑out resistance (slipping out of fastener). Jovvi uses CNC optical grinding with in-process vision inspection.

Phillips tip:

  • Cross recess grinding: 4 flutes, 90° included angle

  • Tip point: Conical with 0.2–0.3 mm flat (prevents bottoming out)

  • Corner radius: <0.03 mm (sharp edges grip fastener)

  • Inspection: 50× optical comparator – overlay with master profile

Torx tip:

  • 6-lobe star pattern ground in one operation (indexed spindle)

  • Tolerances: Across-points (e.g., T20 = 3.86–3.94 mm)

  • No coating – bare titanium provides sufficient wear resistance

Flathead tip:

  • Parallel ground faces (taper <0.02 mm over 10 mm length)

  • Tip thickness: 80% of slot width (prevents spreading slot)

Tang-Through Construction – The Jovvi Advantage

Many “titanium” screwdrivers use a titanium-coated steel blade or a short titanium tip welded to steel shank. Jovvi uses solid Grade 5 Ti blade extending full handle length.

Verification method:

  1. Handle has inspection hole (2 mm diameter) at base

  2. Titanium blade visible through hole

  3. Magnet test: No attraction (steel core would attract)

Benefit: No hidden ferromagnetic components. Full torque transmission without handle separation.

Handle Materials & MRI Compatibility
Handle Type Material Magnetic Susceptibility Pros Cons
Standard (knurled) Brass (C36000) ~0 (diamagnetic) Non-sparking, durable, machinable Heavier than plastic
Insulated Brass + rubber overmold ~0 + rubber (diamagnetic) Electrical safety (1000 V) Bulkier
Precision (small) Anodized aluminum ~2 × 10⁻⁵ Lightweight, low cost Less durable for heavy torque

Jovvi uses brass for standard handles because it is non-magnetic, non-sparking, and provides sufficient mass for torque control.

Tip Hardness & Wear Testing
Test Method Pass Criterion
Initial hardness Rockwell (HRC) on tip 38–42 HRC
Wear test Drive 500 screws into Ti test block (3 N·m torque) Tip geometry change <0.05 mm
Cam-out test Apply 10 N axial force, rotate at 5 N·m torque No visible slippage after 100 cycles

Failure mode: Tip corners round (Phillips) or points wear (Torx). Jovvi screwdrivers typically last 5,000–10,000 cycles – far exceeding brass (<500) or ceramic (<2,000).

Insulated Screwdriver Manufacturing

For live electrical work inside MRI console (e.g., 120 VAC, 24 VDC), Jovvi offers insulated screwdrivers.

Construction:

  1. Brass handle with integral blade tang (same as standard)

  2. Rubber overmold (Viton® or EPDM) – injection molded at 180°C

  3. Insulation thickness: 2 mm minimum (1000 V rating per IEC 60900)

  4. Dielectric test: 10,000 V for 3 minutes (pass if no breakdown)

Note: Insulation is non‑magnetic (rubber contains no ferromagnetic fillers). Use for magnet room electrical panels outside 0.5 m fringe field.

Tags:

non sparking non magnetic tool kit

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