Industries

Precision Machining Services for Auto Parts in the Automotive Manufacturing Industry

Overview

Shenzhen Kansd Technology Co., Ltd. (certified to ISO 9001:2015 & IATF 16949) has been deeply engaged in the automotive manufacturing field. It focuses on machining metal parts with micrometer-level accuracy (±0.002mm), covering areas such as engine systems, transmission mechanisms, and the "Three-Electrics" of new energy vehicles. With over 8 million vehicle-grade parts delivered, it helps customers enhance the reliability of complete machines and the yield rate of production lines.

Core Advantages

1.

Vehicle-Grade Material System

Full Material Coverage: Aluminum alloys (ADC12/A356), nodular cast iron (QT500), stainless steel (17 - 4PH), titanium alloys (TA2/TC4), etc. These materials can meet the requirements of lightweight design, high-pressure resistance, and extreme operating conditions.

Structural Compatibility: It supports the machining of complex thin-walled parts such as high-pressure fuel rails and turbocharger blades (wall thickness 0.8mm ± 0.05mm).

2.

Mass Production-Level Precision Control

Strict Tolerance Standards: The machining accuracy of CNC turning is ±0.003mm, and the flatness achieved by the grinding process is ≤0.001mm.

Dynamic Balance Calibration: For rotating parts like engine crankshafts and motor rotors, G2.5 - class dynamic balance correction is provided.

3.

Composite Process Capabilities

Wear-Resistant Enhancement Solutions: High - frequency quenching (hardness HRC58 - 62), nitriding treatment (case depth 0.2 - 0.3mm), DLC coating (friction coefficient ≤ 0.1).

Sealing Surface Treatments: End-face mirror polishing (Ra ≤ 0.1μm), micro - arc oxidation (withstand voltage ≥ 1000V), which are suitable for the sealing requirements of new energy battery boxes.

Key Application Areas

Powertrain System

Engine Components: High - pressure common - rail fuel injectors (hole diameter Φ0.12mm ± 0.002mm), turbocharger housings.

Transmission Parts: Planetary gear sets (tooth profile error ≤ 3μm), precision valve bodies for dual - clutch modules.

Three-Electrics System of New Energy Vehicles

Electric Drive Unit: Motor housings (coaxiality ≤ 0.008mm), water - cooled end covers (surface roughness of the flat sealing surface Ra0.4μm).

Battery System: Aluminum alloy battery trays (welding pre - machining accuracy ± 0.05mm), busbar copper bars (with silver - plated conductive surfaces).

Chassis and Safety System

Brake Components: ABS valve bodies (inner hole cylindricity ≤ 0.005mm), caliper pistons (diameter tolerance ± 0.003mm).

Steering Mechanisms: EPS sensor brackets (position tolerance ± 0.01mm), rack - and - pinion pairs (meshing clearance ≤ 0.02mm).

Technical Capability Matrix

Indicators	Parameters
Highest Machining Accuracy	Turning ±0.003mm, Grinding ±0.001mm
Typical Surface Roughness	Ra0.2 - 0.8μm (mirror polishing can be customized)
Batch Production Consistency	CPK ≥ 1.67 (100% full inspection of critical dimensions)
Lightweight Structure Machining	Aluminum alloy thin - walled parts ≥ 0.5mm, holes with a depth - to - diameter ratio of 15:1
Monthly Standardized Production Capacity	1.5 million metal parts, emergency orders can be responded to within 3 days

Service Process

1.

Requirement Confirmation:

Receive drawings/3D models (in CATIA/UG/NX formats) and provide DFM manufacturability analysis.

2.

Process Development

Develop an APQP process and complete the PPAP document package (including PSW and MSA reports).

3.

Pilot Production Verification

Deliver OTS samples and full - size reports (in compliance with VDA 6.3 standards).

4.

Mass Production Management

Implement SPC process monitoring and support JIS/JIT sequential supply.

Industry-Recognized Cases

New Energy Battery Tray Project

Mass - produced one - piece die - cast aluminum alloy trays (dimensional tolerance ±0.1mm/800mm) for a leading automaker, with a yield rate of 99.8%.

48V Mild Hybrid System Components

Machined BSG motor housings (cylindricity ≤ 0.01mm) for Bosch's supply chain.

Intelligent Chassis Sensors

Delivered millimeter - wave radar brackets (aluminum alloy + plastic composite machining), meeting the operating conditions from - 40°C to 125°C.

Additional Value

Compliance Assurance

The material traceability system covers from the smelting batch number to the product serial number, supporting the submission of IMDS reports.

Global Collaborative Delivery

The self - operated import and export team supports logistics customs clearance for EU CE/REACH and North American AMSE certifications.

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