China CNC Machining Factory Supply High Quality CNC Small Industrial Metal Products injection moulding of parts

Product Description

CNC machining factory supply high quality cnc small industrial metal products 

 

Factory: Rollyu Precision Machining Co., Ltd
Production Description Customized Aluminum/Steel/Plastic CNC Turning/ Machining / Milling Parts for Non-Standard Devices/Medical Industry/Electronics/Auto Accessory/Vision Lighting
Processing Machining, Turning, Milling, Grinding, Wire-EDM,Fabrication service etc.
Material for CNC Machining processing 1) Aluminum – AL 6061-T6, 6063, 7075-T,5083,6063,6082,5052,2A12 etc.
2) Stainless steel – SS 201,SS301 SS303,SS304,SS316L, SS416L,17-4(SUS630),440C, 430 etc.
3) Steel – 4140,4340,Q235, Q345B,20#,Cr12MoV,D2,A2,4140,4150,P20,S136,M2,O2, SKD11,CRS, etc.
4) Titanium – TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc.
5) Brass – C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90) etc.
6) Copper – bronze,Phosphor Bronze, Magnesium alloy,  etc.
7) Plastic – Peek, Nylon, G-10, Acrylic,Anti-Static Acetal Tan (Tecaform SD) , PC,ABS, etc.
8) Food class ,Medical class- such as POM, Delrin, etc.
9) Aerospace class – PEI+30%GF,PEEK+30%GF,PC+30%GF,PU,PTFE,PE,PVC etc.
10) Rollyu Precision handles many other type of materials, please kindly contact us if your required material is not listed above.
Finish For Aluminum parts – Clear anodized, Color anodized, Hard anodized, Sandblasting, Chemical film, Brushing, Polishing, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Stainless steel parts  – Polishing, Passivation,PVD, Sandblasting, Black oxide, Electrophoresis black, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Steel parts – Polishing, Black oxide, Nickel /Zinc/Gold/ Chrome/Silver plating, Carburized, Powder coating,electrophoresis, QPQ(Quench-Polish-Quench), Heat treatment,
Painting, Silk screen printing,Etching,  Laser marking, etc. etc.
For Brass parts – Nickel /Zinc/Gold/ Chrome/Silver/Titanium plating, Electrophoresis black, Powder coating,Painting, Silk screen printing,Etching,  Laser marking, etc. 
For Plastic parts – Plating (ABS), Brushing (Acylic),Painting, Silk screen printing,Etching,  Laser marking, etc.
Rollyu Precision handles many other type of finish, please kindly contact us if your required finish is not listed above.
Tolerance Minumum tolerance +/- 0.05mm (+/- 0.0005″)
Surface roughness  Ra 0.1~3.2
Drawing format Step/Igs/PDF/DWG/DXF, etc.
Testing equipment CMM (Coordinate Measuring Machine),Height gauge, Caliper,  Hardness tester, Roughness tester, Projector machine, Pin/Angle/Block/Plug/Thickness/Thread/Radius  gauge,etc. 
MOQ 1 piece
Lead time 2 weeks after received order.
Certificate ISO9001, ISO13485.
Inspection processing IQC,IPQC, FQC, QA.
Capacity CNC turning work range: φ0.5mm-φ650mm*600mm.
CNC milling work range: 880mm*1300mm*600mm.
Application Automation, Medical device, Consumer Electronics, Security, IoT, Energy, etc. 

Rollyu Precision Machining Co., Ltd located in HangZhou, China, is a mechanical manufacturer providing a wide range of custom specialty plastic injection molded parts, cnc machining parts, Sheet Metal Fabrication, Liquid Silicone Rubber Injection Parts, Aluminum Extrusion, Sub-assemblies ,along with advanced over molding capability.
Serving markets including Security systems, Fire systems, Marine ,Health care, Medical Devices, Personal Care, Networking, Internet of Things (IoT), Xihu (West Lake) Dis.n Machine Interaction (HMI) , Consumer Electronics, Telecommunications and Renewable Energy as well as many others with solutions for a variety of challenges they face in these high paced, ever-changing industries. Rollyu Precision provides mechanical components and sub-assemblies to many of the top companies worldwide.

With many years of mechanical parts manufacturing, we continue to expand our capabilities and are well positioned to offer concept-to-commercialization solutions. Rollyu Precision can provide over molding capabilities to streamline timelines and costs. If medical device engineering and design for manufacturing services are needed, our project teams are aligned to provide those services, including tool and fixture fabrication and rapid prototyping.

Examples Of Services And Capabilities Include:

  • Engineering DFM Services
  • CNC Swiss Machining, Milling, and Turning
  • Over molding and Injection Molding
  • Plastic Injection Molded Parts
  • Liquid Silicone Rubber Injection Parts
  • Aluminum Extrusion
  • Sheet Metal Fabrication
  • Sub-assemblies

For a more complete list, please send us inquiry.

Rollyu Precision has unrivalled links with the companies Medical device, Instrumentation, Security systems, IoT, HMI, Automation, Photonics, Energy, Marine and many others industries. We have mutually beneficial relationships with nearly 150 companies around the world, from the smallest company to the largest enterprise. 
For our partners, we deliver world-class machining parts, plastic molded parts , silicone rubber parts, sheet metal fabrication, heat sink, and assembly components. We can manufacture from single parts to sub-assemblies to meet challenges and your goals. 

Quick Response After-sales Service

Rollyu Precision after sales service is based on our detailed knowledge of our team, our machines and our accumulated experiences, thus enabling our technicians to rapidly identify and resolve any potential problems.

A periodic diagnosis minimizes the risk of unexpected events and increases productivity. Moreover, all basic components are checked 100% before shipment.

We look forward to your RFQ or a trial order firstly.

Thank you for your time for having a visist at our on-line shop.

Sincerely

Tina/Rollyu Precision
 
 

FAQ
Q1: Are you a trading company or a factory ?
A1: We are a manufacturer specialized in precision parts OEM, Machining parts,  Plastic injection molding, Plastic parts, Silicone and rubber parts, Heat sink, sheet metal fabrication as well as Sub-assembly.

Q2: Do you accept to manufacture the customized products based on our design?
A2: Yes, we are a professional factory with an experienced engineering team, would like to provide the OEM service.

Q3: How can I get the quotation?
A3: We will offer you the quotation within 24 working hours after receiving your detailed information. In order to quote you faster and more accurate, please provide us the following information together with your inquiry:
1) CAD or 3D Drawings
2) Tolerance.
3) Material requirement
4) Surface treatment
5) Quantity (per order/per month/annual)
6) Any special demands or requirements, such as packing, labels, delivery,etc.

Q4: Will my drawings be safe after sending to you?
A4: Sure, we will keep them well and not release to others without your permission.

Q5: How long is the lead-time for a mold and plastic parts, machining parts, sheet metal fabrication?
A5: It all depends on the mold (parts) size and complexity. 
Normally, the lead time is 18-20 days for molds, 15-20 days for plastic parts. If the molds are very simple and not big, we can work out within 15 days.
The lead time for machining parts is around 2-4 weeks.
For sheet metal fabrication the lead time is around 3-5 weeks.

Q6: I have no 3D drawing, how should I start the new project?
A6: You can supply us the sample or provide us the product sizes and let us know the detailed requirements, our engineers will help you to work out the 3D drawing.

Q7: If you make poor quality goods, will you refund our fund?
A7: As a matter of fact, we won’t take a chance to do poor quality products. Meanwhile, we manufacture good-quality products until your satisfaction.

Q8: Is it possible to know how are my products going on without visiting your factory?
A8: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
 

To Be Negotiated 1 Piece
(Min. Order)

###

Application: Fastener, Auto and Motorcycle Accessory, Hardware Tool, Machinery Accessory, Printing Machine
Standard: GB, EN, API650, China GB Code, JIS Code, TEMA, ASME
Surface Treatment: Spray Paint
Production Type: Batch Production
Machining Method: CNC Machining
Material: Nylon, Steel, Plastic, Brass, Alloy, Copper, Aluminum, Iron, Stainless Steel

###

Samples:
US$ 10/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Factory: Rollyu Precision Machining Co., Ltd
Production Description Customized Aluminum/Steel/Plastic CNC Turning/ Machining / Milling Parts for Non-Standard Devices/Medical Industry/Electronics/Auto Accessory/Vision Lighting
Processing Machining, Turning, Milling, Grinding, Wire-EDM,Fabrication service etc.
Material for CNC Machining processing 1) Aluminum – AL 6061-T6, 6063, 7075-T,5083,6063,6082,5052,2A12 etc.
2) Stainless steel – SS 201,SS301 SS303,SS304,SS316L, SS416L,17-4(SUS630),440C, 430 etc.
3) Steel – 4140,4340,Q235, Q345B,20#,Cr12MoV,D2,A2,4140,4150,P20,S136,M2,O2, SKD11,CRS, etc.
4) Titanium – TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc.
5) Brass – C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90) etc.
6) Copper – bronze,Phosphor Bronze, Magnesium alloy,  etc.
7) Plastic – Peek, Nylon, G-10, Acrylic,Anti-Static Acetal Tan (Tecaform SD) , PC,ABS, etc.
8) Food class ,Medical class- such as POM, Delrin, etc.
9) Aerospace class – PEI+30%GF,PEEK+30%GF,PC+30%GF,PU,PTFE,PE,PVC etc.
10) Rollyu Precision handles many other type of materials, please kindly contact us if your required material is not listed above.
Finish For Aluminum parts – Clear anodized, Color anodized, Hard anodized, Sandblasting, Chemical film, Brushing, Polishing, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Stainless steel parts  – Polishing, Passivation,PVD, Sandblasting, Black oxide, Electrophoresis black, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Steel parts – Polishing, Black oxide, Nickel /Zinc/Gold/ Chrome/Silver plating, Carburized, Powder coating,electrophoresis, QPQ(Quench-Polish-Quench), Heat treatment,
Painting, Silk screen printing,Etching,  Laser marking, etc. etc.
For Brass parts – Nickel /Zinc/Gold/ Chrome/Silver/Titanium plating, Electrophoresis black, Powder coating,Painting, Silk screen printing,Etching,  Laser marking, etc. 
For Plastic parts – Plating (ABS), Brushing (Acylic),Painting, Silk screen printing,Etching,  Laser marking, etc.
Rollyu Precision handles many other type of finish, please kindly contact us if your required finish is not listed above.
Tolerance Minumum tolerance +/- 0.05mm (+/- 0.0005")
Surface roughness  Ra 0.1~3.2
Drawing format Step/Igs/PDF/DWG/DXF, etc.
Testing equipment CMM (Coordinate Measuring Machine),Height gauge, Caliper,  Hardness tester, Roughness tester, Projector machine, Pin/Angle/Block/Plug/Thickness/Thread/Radius  gauge,etc. 
MOQ 1 piece
Lead time 2 weeks after received order.
Certificate ISO9001, ISO13485.
Inspection processing IQC,IPQC, FQC, QA.
Capacity CNC turning work range: φ0.5mm-φ650mm*600mm.
CNC milling work range: 880mm*1300mm*600mm.
Application Automation, Medical device, Consumer Electronics, Security, IoT, Energy, etc. 
To Be Negotiated 1 Piece
(Min. Order)

###

Application: Fastener, Auto and Motorcycle Accessory, Hardware Tool, Machinery Accessory, Printing Machine
Standard: GB, EN, API650, China GB Code, JIS Code, TEMA, ASME
Surface Treatment: Spray Paint
Production Type: Batch Production
Machining Method: CNC Machining
Material: Nylon, Steel, Plastic, Brass, Alloy, Copper, Aluminum, Iron, Stainless Steel

###

Samples:
US$ 10/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

Factory: Rollyu Precision Machining Co., Ltd
Production Description Customized Aluminum/Steel/Plastic CNC Turning/ Machining / Milling Parts for Non-Standard Devices/Medical Industry/Electronics/Auto Accessory/Vision Lighting
Processing Machining, Turning, Milling, Grinding, Wire-EDM,Fabrication service etc.
Material for CNC Machining processing 1) Aluminum – AL 6061-T6, 6063, 7075-T,5083,6063,6082,5052,2A12 etc.
2) Stainless steel – SS 201,SS301 SS303,SS304,SS316L, SS416L,17-4(SUS630),440C, 430 etc.
3) Steel – 4140,4340,Q235, Q345B,20#,Cr12MoV,D2,A2,4140,4150,P20,S136,M2,O2, SKD11,CRS, etc.
4) Titanium – TA1,TA2/GR2, TA4/GR5, TC4, TC18 etc.
5) Brass – C36000 (HPb62), C37700 (HPb59), C26800 (H68), C22000(H90) etc.
6) Copper – bronze,Phosphor Bronze, Magnesium alloy,  etc.
7) Plastic – Peek, Nylon, G-10, Acrylic,Anti-Static Acetal Tan (Tecaform SD) , PC,ABS, etc.
8) Food class ,Medical class- such as POM, Delrin, etc.
9) Aerospace class – PEI+30%GF,PEEK+30%GF,PC+30%GF,PU,PTFE,PE,PVC etc.
10) Rollyu Precision handles many other type of materials, please kindly contact us if your required material is not listed above.
Finish For Aluminum parts – Clear anodized, Color anodized, Hard anodized, Sandblasting, Chemical film, Brushing, Polishing, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Stainless steel parts  – Polishing, Passivation,PVD, Sandblasting, Black oxide, Electrophoresis black, Painting, Silk screen printing,Etching,  Laser marking, etc.
For Steel parts – Polishing, Black oxide, Nickel /Zinc/Gold/ Chrome/Silver plating, Carburized, Powder coating,electrophoresis, QPQ(Quench-Polish-Quench), Heat treatment,
Painting, Silk screen printing,Etching,  Laser marking, etc. etc.
For Brass parts – Nickel /Zinc/Gold/ Chrome/Silver/Titanium plating, Electrophoresis black, Powder coating,Painting, Silk screen printing,Etching,  Laser marking, etc. 
For Plastic parts – Plating (ABS), Brushing (Acylic),Painting, Silk screen printing,Etching,  Laser marking, etc.
Rollyu Precision handles many other type of finish, please kindly contact us if your required finish is not listed above.
Tolerance Minumum tolerance +/- 0.05mm (+/- 0.0005")
Surface roughness  Ra 0.1~3.2
Drawing format Step/Igs/PDF/DWG/DXF, etc.
Testing equipment CMM (Coordinate Measuring Machine),Height gauge, Caliper,  Hardness tester, Roughness tester, Projector machine, Pin/Angle/Block/Plug/Thickness/Thread/Radius  gauge,etc. 
MOQ 1 piece
Lead time 2 weeks after received order.
Certificate ISO9001, ISO13485.
Inspection processing IQC,IPQC, FQC, QA.
Capacity CNC turning work range: φ0.5mm-φ650mm*600mm.
CNC milling work range: 880mm*1300mm*600mm.
Application Automation, Medical device, Consumer Electronics, Security, IoT, Energy, etc. 

Designing Injection Molded Parts

Injection molded parts are designed to work together to form a whole. While the small plastic toys like Legos aren’t typically fabricated for assembly, these products still require precision measurements. For this reason, the designs of injection molded parts should be perfected for manufacturing. The designs should also minimize error potential.

Design considerations for injection molded parts

Injection molded parttWhen designing injection molded parts, it’s essential to consider the wall thickness of the part. Ideally, the wall thickness is uniform across the entire part. This allows the entire mold cavity to fill without restriction, and reduces the risk of defects. Parts that don’t have uniform wall thickness will have high stresses at the boundary between two sections, increasing the risk of cracks, warping, and twisting. To avoid such stresses, designers can consider tapering or rounding the edges of the part to eliminate stress concentration.
The wall thickness of the injection molded part is important because it affects many key characteristics. Therefore, it is critical to take proper care in choosing the wall thickness to avoid costly delays caused by mold problems or mold modification. The nominal wall thickness should be determined based on the function and stress requirements of the part. Similarly, the minimum wall thickness should be calculated based on acceptable stress. Too thin a wall can result in air traps and excessive plastic pressure.
Injection molded parts that have sharp corners are a common cause of defects. Sharp corners create stress concentrations, poor flow patterns, and increased injection mold wear. To minimize these problems, designers should keep inside corners and outside corners at half the wall thickness. This will help minimize stress and ensure the integrity of the part.
Another important design consideration for injection molded parts is the thickness of the ribs. They should be at least two-thirds of the outer wall. Thicker ribs may result in sink marks on the outer surface. Undercuts also complicate the mold design and increase the cost of the part.
Tolerance variation is also an important consideration. It depends on materials, process control, and tool design. Tolerance variation varies from molder to molder, and designers should discuss critical tolerance requirements with molders. If the part has to be manufactured to a particular tolerance, designers should consider options for mold revisions to minimize the tolerance variance. Additionally, designers may need to intentionally design extra clearance. To compensate for such variation, the molder may remove some steel or modify the design. In some cases, interference can be solved by welding.
Design considerations for injection molded parts should be discussed with material science professionals early in the design process. This is critical because changes to the mold design can be costly. Therefore, achieving the best possible result is critical. By following design guidelines, manufacturers can avoid common defects. A uniform wall thickness is also important because non-uniform thickness can lead to warping the part as it cools.
Another important factor for injection molded parts is the flowability of the material in the mold cavity. The resin should be able to flow easily around rounded corners. For example, a molded part with a curved undercut will not eject properly from the mold if there’s no space between the two sides. For this reason, designers should consider the flowability of the molded material before deciding on a design.

Adding a runner system to an injection molding machine

Injection molded parttThere are two main types of runner systems: hot runner systems and cold runner systems. In a hot runner system, a runner nozzle delivers the molten plastic into the mold cavity. A cold runner system does not require the use of a nozzle and acts as a conduit for the molten plastic.
The design of a hot runner mold should balance the activity of plastic solution and mold cavities. Ideally, a mold with two cavities is better balanced than one with three. However, it is important to remember that a three-cavity mold requires a manifold balance of human activities.
Plastic mold runner systems are crucial for ensuring consistent fill rates and pressure. Whether you are producing single or multiple-cavity plastic parts, a runner system will keep your processes consistent. When choosing a runner system, make sure you have the right one for your application.
Hot runner systems can reduce cycle times by as much as 10 to 30 percent. They help improve quality control and minimize material waste by keeping the plastic molten throughout the molding process. Moreover, they help save on plastic raw materials and energy. These features make them ideal for large production lines.
A hot runner system can also help prevent overfilling a cavity. Make sure that the volume of the hot runner is equal to the volume of the mold cavity. Otherwise, the plastic solution will be trapped inside the hot runner for too long and decompose.
Hot runner systems come in many varieties. One type of hot runner system is called the sprue hot runner system. This system uses a mechanical valve to open and close a nozzle. This type of hot runner is more effective and efficient than a general-purpose hot runner. However, it is also more expensive.
In a three-plate mold, the runner system is positioned between the core and cavity plates. When the mold is opened, the runner system automatically separates from the molded part. This eliminates the need for manual labor, but increases the cost of tooling.
The runner system is important for producing parts that are both thin and thick. The runner should be narrow but large so as not to create voids and improve the overall performance of the final product. Runner systems are also important for reducing the amount of energy needed to form and regrind the material.
A hot runner system is one way to improve the speed and accuracy of plastic molding. It helps avoid problems with waste by reducing the amount of plastic wasted. Furthermore, a hot runner system also prevents expensive repairs. By adding a runner system to an injection molding system, you will ensure better quality and precision, and avoid unnecessary downtime and costly repairs.
Hot runner systems are ideal for high-volume productions. However, they require a higher level of maintenance. In addition, hot runner systems are difficult to clean and often leave waste material. Hidden runners may also be inconvenient to remove, especially when changing materials or colors. They can also lead to sticking issues if they are made from thermally sensitive materials.

Using a thermally isolated cold injection unit

Injection molded parttThermostatic control of temperature in an injection molding process can make a significant impact on part quality. High mold temperatures should be regulated by using a temperature-controlled cooling unit. These devices are equipped with pumping systems and internal heaters. The temperature of the injected plastic determines the plastic’s flow characteristics and shrinkage. Temperature also influences the surface finish, dimensional stability, and physical properties of the finished product.
A thermally isolated cold injection unit allows mold operators to mold parts at lower temperatures than a conventional injection molding machine. The injection mold itself is composed of two steel halves. The two halves are connected by a mechanical hinge. During injection molding, a small amount of plastic is forced into the mold cavity. The injected plastic is then allowed to cool into a solid state. The molded part then falls out of the mold halves. The injected part then enters a bin to be collected.
The heat/cool injection molding process can improve the aesthetics of molded parts significantly. The effects of this technique are particularly apparent with amorphous resins, which do not form a skin during the injection phase. The molded parts have a higher gloss than with conventional molding techniques.
This process requires less clamping force than conventional injection molding and offers more design freedom. It also increases process capacity and materials savings. The process control for this process is more complex, with variables such as the amount of melt injection, water pressure, and water injection delay time.
The angle of repose is another criterion. A low angle indicates that the pellets are free-flowing, while an angle above 45deg indicates that the pellets are not free-flowing. This is important when processing nylon resins.
Plastic injection molding has made huge advances in recent decades. Today, most injection molds fall into one of two types: hot runner and cold runner. Each has its advantages and disadvantages. Understanding how they differ will help you decide which method is right for you.
Injection molding is a highly effective manufacturing process that gives manufacturers a competitive edge over their competition. Using this process produces high-quality plastic and metal parts with minimal waste and a low cycle time. The process is also extremely accurate and produces products with the perfect blend of flexibility and strength.
China CNC Machining Factory Supply High Quality CNC Small Industrial Metal Products     injection moulding of partsChina CNC Machining Factory Supply High Quality CNC Small Industrial Metal Products     injection moulding of parts
editor by czh 2022-11-26