CNC Machining Service

CNC Service

We provide a variety of Precision CNC Machining service that includes CNC Milling, CNC Turning and surface grinding. Whether you’re designing parts that demand high volumes or only running trials with prototypes for low-volume production, our CNC machining services are available to avail you iterative development with quick turnaround and consistency in quality. Both of these processes CNC Turning and CNC milling are designed to achieve specific aims in manufacturing from jigs and fixtures to parts with cylindrical properties, holes, slots and grooves.

  • CNC milling service
  • CNC turning service
  • Grinding machining
  • EDM (Electrical Discharge Machining)

CNC Milling Service

We offers a range of CNC milling processes to produce precise and complex parts with high-dimensional tolerances:

  • Carving machine
  • CNC three-axis
  • CNC four-axis
  •  CNC five-axis
  •  Milling machine / End milling / Gantry milling

CNC Turning Service

Our CNC turning process is highly optimized for the production of end-use production parts and customized models. With the aid of our CNC Lathe and live tooling additions, we achieve the machining of features such as grooves, flats, radial holes, axial and slots in as fast as 24 hours.

  • General car/lathe
  •  CNC car
  •  Vertical lathe
  •  Metal: aluminum, steel, stainless steel (17-4, inconel 625 & 718), magnesium, titanium, zinc, brass, bronze, copper

Grinding Machining

  •  It can process materials with higher hardness, such as quenched steel, cemented carbide, etc. It can also process brittle materials, such as ceramics, glass, and granite.
  • Micro-feed, high machining accuracy and small surface roughness values can be obtained. The accuracy can reach below IT5 and below 0.05μm.
  • It has a wide range of applications and can process various surfaces.
  • High-efficiency grinding, such as power grinding, etc.
  • When the machining allowance of the blank is small, it is not necessary to go through rough machining and semi-finishing, such as turning, milling, planing, etc., and directly use grinding to meet the machining accuracy requirements.
  •  Our company has a number of precision hand grinders and precision large water mills, with sizes ranging from 320x160cm to 1250x630cm
  •  Milling machine / End milling / Gantry milling

EDM (Electrical Discharge Machining)

  • Its machining accuracy is high.
  • Get a very good surface finish.
  • Any material can be machined, regardless of its hardness.
  • Moulds and parts with complex shaped holes and cavities can be processed.
  • It is suitable for machining deep and fine holes, curved surfaces, special-shaped holes, deep grooves, narrow slits and thin walls, etc.
  • There is no physical contact between the tool and the workpiece, and the damage to the workpiece is small.
  • Suitable for machining precision injection molds.

CNC Machining Services Technical Specifications

Tolerance leverSize RangeSize RangeSize RangeSize RangeSize RangeSize RangeSize Range
Specifications<<3, >0.5<<6, >3<<30, >6<<120, >30<<400, >120<<1000, >400<<2000, >1000
/Tolerance standardTolerance standardTolerance standardTolerance standardTolerance standardTolerance standardTolerance standard
F±0.05±0.05±0.1±0.15±0.2±0.3±0.5
M±0.1±0.1±0.2±0.3±0.5±0.8±1.2
C±0.2±0.3±0.5±0.8±1.2±2±3
V±0.5±1±1.5±2.5±4±6

Advantages Of CNC Machining Service For Product Developers

  • There are many high-performance materials that can be used.
  • The products produced have good physical and chemical properties.
  • High degree of automation and high production efficiency.
  • CNC has strong adaptability to machining objects, thus shortening the production preparation cycle of the product.
  • High machining precision and stable quality.
  • The machining dimensional precision is between 0.005 and 0.01 mm.High consistency of products.
  • The production efficiency is high in the case of multi-variety and small batch production.
  • It can process complex profiles that are difficult to process by conventional methods, even some unobservable processing parts.
CNC Machining Service, CNC Milling, CNC Turning, Precision CNC Factory QDJ-prototype Inc In China
CNC Machining Service, CNC Milling, CNC Turning, Precision CNC CNC Precision Machining Service Factory QDJ-prototype Inc In China

Advantages Of QDJ-Prototype CNC Machining Service

  • More than 80 precision CNC machining centers to ensure output and high precision.
  • With the world’s advanced German HERMLE C22, C42 and C62 5-axis CNC machining centers, the workpiece quality can reach 2500 kg, and can produce top turning and milling products.
  • More than 12 years of rich experience in the industry.
    Have a strong engineering design and project team.
  • Various complete post-surface treatment processes fully meet product appearance and surface performance requirements.
    Have industry-leading testing equipment to ensure the dimensional accuracy of products.

What is CNC machining?

CNC machining is a subtractive manufacturing process in which various precision cutting tools are used to remove raw materials to make a part or product. Advanced software is used to control device specifications according to your 3D design. Our team of engineers and mechanics program the equipment to optimize cutting time, surface finish and final tolerances to meet your specifications

CNC machining Service Factory QDJ-prototype Inc In China

Surface Treatment Of CNC Machining Service

As machined (Ra 3.2μm / Ra 126μin)

This is our standard finish. Parts are machined and deburred, sharp edges are chamfered.

Smooth machining (Ra 1.6μm / Ra 63μin)

–Smooth machining is like an ‘As machined’ finish but slightly less evident machine marks. Parts are machined at a lower feed, and no hand polishing is applied.

Polishing (Ra 0.8μm / Ra 32μin)

–To reduce machining marks, parts are brushed manually with #400 – 600 grit sandpaper. Ideal to slightly reduce the roughness of the finish.

Brushed (Ra 1.2μm / Ra 47μin)

–To reduce machining marks, parts are brushed manually with #400 – 600 grit sandpaper. Ideal to slightly reduce the roughness of the finish.

Powder coated

–Powder coating is a strong, wear-resistant finish compatible with all metal materials.

Bead blasted

Parts are bead blasted with glass beads, resulting in a grainy texture and reduced machining marks.

Black oxide

–Applicable on steels, black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.

Electroless Nickel Plating

–Parts are machined to Ra1.6μm and electroless nickel plated. Ideal for wear abrasion and corrosion resistance, not for cosmetic purposes.

As machined + Anodized type III (Hardcoat)

–Parts are machined, and an anodizing type III coating is directly applied to the surface—ideal for improving corrosion and wearing resistance of components.

As machined + Anodized type II

–Parts are anodized (type II) directly after machining. The most cost-effective anodizing option, ideal for non-cosmetic, functional parts. They are used to improve wear and corrosion resistance.

Brushed + Anodized type II (Glossy)

–Parts are manually brushed with fine sandpaper to attenuate the machining marks and then anodized. Ideal for increasing the corrosion resistance of the part. Typically results in a glossy aspect.

Bead blasted + Anodized type II (Matte)

–Parts are bead blasted and anodized type II. Ideal for increasing the corrosion resistance of the part. Results in naturally matte colors. For glossy colors, please select the bead-blasted + glossy anodizing option.

Tumbled

–This is a batch-based process that tumbles vibrating media to remove sharp edges and burrs on machined parts. Tumbling can remove machine marks on exterior surfaces. Parts over 8” may require a manual review.

PTFE I

mpregnated Hard Anodize–A hard coat anodize process that embeds PTFE to create a self-lubricating, dry contact surface with Type 3 hard coat’s protective properties. This finish can be used on aluminum alloys or titanium and increases the service life of the product. This finish conforms to the AMS-2482 Type 1 Hard Coat Anodizing with Teflon (Non-Dyed).

Passivation

–Improves corrosion resistance for 200 and 300 series and precipitation hardened corrosion-resistant steels. Thickness is negligible, about 0.0000001”. Conforms to ASTM A967, AMS-QQ-P-35, MIL-STD-171, ASTM A380, or AMS 2700.

Electropolishing

–An electrochemical process cleans steel parts to reduce corrosion and improve appearance, by making the metal brighter. Removes about 0.0001”-0.0025” of the metal. Conforms to ASTM B912-02.

Silver Plating

–Silver offers high solderability and electrical conductivity but is susceptible to tarnish. Conforms to AMS QQ-S-365D. Thickness is about 0.00002” – 0.0003.”

Gold Plating

–Gold Plating provides good corrosion and tarnish resistance with excellent solderability. Default application specification is MIL-G-45204 and ASTM B488, CLASS 00, 0, OR 1. Thickness is about 0.00002″ – 0.00005.”

Zinc Plating

–Provides uniform zinc coating which offers protection from corrosion, oxidation, and wear on irregular surfaces. Conforms to ASTM B633-15.

Custom Coatings & Finishes

– Available upon your request.

CNC Machining Materials QDJ Use

Metal CNC Machining Materials

TypeMaterialTypeMaterial
AluminumAluminum 6061-T651Low Carbon SteelLow Carbon Steel CR 1008
AluminumAluminum 7075-T651Low Carbon SteelCR Galvanized
AluminumAluminum AlSi10MgLow Carbon SteelCR Galvannealed
AluminumAluminum 5052-H32Stainless SteelStainless Steel 17-4 PH
BrassBrass C260Stainless SteelStainless Steel 304/304L
BrassBrass C360Stainless SteelStainless Steel 316
Cobalt ChromeCobalt ChromeStainless SteelStainless Steel 316L
CopperCopper C101Stainless SteelStainless Steel 303
CopperCopper C100Steel AlloySteel Alloy 4140
CopperCopper CuNi2SiCrTitaniumTitanium Ti 6Al-4V
InconelInconel 718TitaniumTitanium Grade 5 6A1-4V
Low Carbon SteelSteel CR 1018

Plastic CNC Machining Materials

TypeMaterialTypeMaterial
ABSABSPMMA (Acrylic)PMMA (Acrylic)
ABSABS Flame RetardantPOM (Acetal/Delrin)Acetal Homopolymer (Delrin 150)
CPVCCPVCPOM (Acetal/Delrin)Acetal 20% GF (Delrin 570)
HDPELDPEPOM (Acetal/Delrin)Acetal Copolymer
LDPELDPEPOM (Acetal/Delrin)Acetal Static Dissipative (Tecaform SD)
PA (Nylon)Nylon 6 Light BluePPPP (Polypropylene Copolymer)
PA (Nylon)Nylon 6/6PPPP (Polypropylene Copolymer)
PA (Nylon)Nylon 6/6 (30% GF)_NaturalPPE/PSPPE/PS
PA (Nylon)Nylon 6 BlackPPE/PSNoryl 265
Polycarbonate (PC)Polycarbonate (20% GF)PPSUPPSU
Polycarbonate (PC)Polycarbonate – BlackPPSURadel R 5500
Polycarbonate (PC)Polycarbonate – ClearPSPS (HIPS)
Polycarbonate (PC)Polycarbonate – TranslucentPSUPSU
PEEKPEEKPTFE (Teflon)PTFE (Teflon)
PEIUltem 1000PVCPVC
PEIUltem 2300 (30% GF)UHMWUHMW
PETPETUHMWQuadrant EPP Tivar 1000

QDJ Follows ISO-2768 Standards For CNC Machining Service

Limits for nominal sizeMetal (ISO2768-m)Plastic
0.5mm to 3mm±0.05mm±0.1mm
Over 3mm to 6mm±0.05mm±0.1mm
Over 6mm to 30mm±0.1mm±0.2mm
Over 30mm to 120mm±0.15mm±0.3mm
Over 120mm to 400mm±0.2mm±0.5mm
Over 400mm to 1000mm±0.3mm±0.8mm
Over 1000 mm to 2000mm±0.5mm±1.2mm
Over 2000mm to 4000mm±2mm