3D Printing

SLA stereo light curing molding

SLA light curing 3D printing is one of the earliest commercial 3D printing technologies and also one of the most versatile technologies. The liquid photosensitive resin is polymerized by ultraviolet irradiation to cure layer by layer and generate a three-dimensional solid. Because the raw material is liquid, the support shall be set during printing, and the support shall be manually removed after printing.

Maximum construction size: 800mm * 800mm * 450mm

Machining accuracy: ± 0.1mm/100mm

Delivery date: 3 days

Selective laser sintering

Selective laser sintering (SLS) is an industrial 3D printing technology that uses powder materials such as nylon to manufacture precise and durable parts. Similar to other 3D printing technologies, the infrared laser beam is selectively sintered according to the layered section information under the control of the computer. After one layer is completed, the next layer is sintered. After all the sintering is completed, the excess powder is removed, and a sintered part can be obtained.

Maximum construction size: 350mm * 350mm * 420mm

Machining accuracy: ± 0.2mm/100mm

Delivery date: 3 days

FDM stereo light curing molding

Fused deposition manufacturing (FDM) is a relatively common 3D printing technology and one of the most common technologies. FDM extrudes the plastic filament material through the nozzle and stacks it layer by layer in the workbench to manufacture parts. FDM can realize high-precision printing of simple parts. However, due to the limitations of the process, any overhanging feature needs support materials and needs to be removed after printing. Therefore, the precision of more complex parts with overhanging structure will be slightly worse.

Maximum construction size: 480mm * 480mm * 480mm

Machining accuracy: ± 0.3mm/100mm

Delivery date: 7 days

Material

Plastics include photosensitive resin, transparent resin, translucent resin, black resin, high toughness resin, nylon, Nylon + glass fiber, PLA polylactic acid, etc.

Metal materials include stainless steel, aluminum alloy and titanium alloy.

Surface finishing

The common methods of 3D printing surface finishing include grinding, polishing, sandblasting, painting, electroplating, printing, laser printing, etc.

Die Casting

Start Rapid Limited is a leading die casting service provider in Asia. Our engineers, technicians and quality control expert team work together to ensure that your products are completed on time. As a first-class die casting supplier in China, we focus on new die casting technology to produce complex parts with excellent precision dimensions and smooth surface castings.

We use metals (including zinc, copper, brass, aluminum, magnesium, lead, tin, lead tin alloy, stainless steel, carbon steel, tool steel and cobalt) to cast parts and manufacture high-precision die castings for customers in various industries.

What is die casting?

Die casting is a metal casting process, which is characterized by applying high pressure to molten metal by using the inner cavity of the mold. The mold is usually made of alloy with higher strength. This process is somewhat similar to injection molding. Most die castings are iron free, such as zinc, copper, aluminum, magnesium, lead, tin and lead tin alloys and their alloys. Casting include cold chamber die casting machine and hot chamber die casting machine.

The cost of casting equipment and molds is high, so the die casting process is generally only used for mass production of a large number of products. Therefore, die casting is one of the most widely used casting processes. Compared with other casting technologies, the surface of die casting is more flat and has higher dimensional consistency.

Characteristics of various die casting materials

Zinc: the most easily die-casting metal, it is very economical to manufacture small parts, easy to coat, high compressive strength and plasticity, and long casting life.

Aluminum: light weight, complex manufacturing and thin-wall casting with high dimensional stability, strong corrosion resistance, good mechanical performance, high thermal conductivity and conductivity, and high strength at high temperature.

Magnesium: easy to machine, high strength to weight ratio, the lightest of commonly used die-casting metals.

Copper: it has high hardness and strong corrosion resistance. It has the best mechanical properties among the commonly used die-casting metals, with abrasion resistance and strength close to that of steel.

Lead and tin: high density, high dimensional accuracy, can be used as special anti-corrosion parts. For public health reasons, this alloy cannot be used as food processing and storage equipment. The alloy of lead, tin and antimony (sometimes containing a little copper) can be used to make manual type and hot stamping in letterpress printing.

Sheet Metal Processing

Sheet metal processing includes traditional cutting, blanking, bending, forming and other methods and process parameters, as well as various cold punching, mold structure, die structure and process parameters, working principles and operating methods of various equipment, as well as new stamping processes and new technologies. Part sheet metal processing is called sheet metal processing.

The materials commonly used in sheet metal processing include cold-rolled plate (SPCC), hot-rolled plate (SHCC), galvanized plate (SECC, SGCC), copper (Cu) brass, red copper, beryllium copper, aluminum plate (6061, 5052, 1010, 1060, 6063, hard aluminum, etc.), stainless steel (mirror, brushed surface, fog surface). According to the different functions of the products, different materials are selected. Generally, the use and cost of the products should be considered.

There are many different processes for sheet metal

1. Cutting

2. Blanking and precision blanking

3. Punching

4. Punching holes

5. Perforation

6. Slotting operation

7. Incision operation

8. Sheet metal forming

9. Bending operation

Electric Discharge Machining (EDM)

EDM, commonly known as electrical discharge machining, refers to the method of machining the workpiece in a certain medium through the electric erosion of pulse discharge between the tool electrode and the workpiece electrode.

Characteristics of EDM

1. EDM belongs to non-contact machining

There is no direct contact between the tool electrode and the workpiece, but there is a spark discharge gap, which is generally between 0.05 and 0.3mm, and sometimes it may reach 0.5mm or more. The gap is filled with working fluid. During machining, the workpiece is subject to discharge corrosion through high-voltage pulse discharge.

2. Can "overcome the hard with softness"

Since EDM directly uses electric energy and thermal energy to remove metal materials, which has little relation with the strength and hardness of workpiece materials, it can process hard workpieces with soft tool electrodes to achieve "overcoming hardness with softness".

3. It can process any difficult metal material and conductive material

Since the removal of materials in machining is realized by the electrical and thermal effects during discharge, the machinability of materials mainly depends on the electrical conductivity and thermal properties of materials, such as melting point, boiling point, specific heat capacity, thermal conductivity, resistivity, etc., and is almost independent of its mechanical properties (hardness, strength, etc.). In this way, the limitation of traditional cutting tools can be broken, and the hard and tough workpieces can be processed with soft tools, and even superhard materials such as polycrystalline diamond and cubic boron nitride can be processed.

4. It can process complex shape surface

Because the shape of the tool electrode can be simply copied to the workpiece, it is particularly suitable for the processing of workpieces with complex surface shapes, such as the processing of complex cavity molds. In particular, the adoption of numerical control technology makes it possible to process complex shape parts with simple electrodes.

5. It can process parts with special requirements

It can process parts with special requirements such as thin wall, elasticity, low rigidity, micro small hole, special-shaped small hole and deep small hole, and can also process small words on the mold. Since the tool electrode and the workpiece are not in direct contact during machining, there is no cutting force for machining, so it is suitable for machining low rigidity workpieces and micro machining.

Rapid Prototyping

Rapid prototyping technology is also known as rapid prototyping manufacturing technology. It integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, material science and laser technology. It can automatically, directly, quickly and accurately transform design ideas into prototypes with certain functions or directly manufacture parts. Therefore, it provides an efficient and low-cost implementation method for parts prototyping and verification of new design ideas.

We offer a wide range of prototyping services:

3D printing

CNC machining

casting

Characteristic

1. Materials are not limited, and various metal and non-metal materials can be used;

2. High replicability and interchangeability;

3. It is superior in machining complex curved surface;

4. Short processing cycle and low cost. The cost has nothing to do with the complexity of the product. The general manufacturing cost is reduced by 50%, and the processing cycle is saved by more than 70%;

5. High technology integration, realizing the integration of design and manufacturing.

Application

1. A brand-new product development model is established for design and development personnel. Quickly, directly and accurately convert the design idea into a physical model with certain functions, which shortens the development cycle, reduces the development cost, and also enables the enterprise to take the lead in the fierce market competition.

2. It is mainly used for manufacturing single piece and small batch metal parts. For some special and complex parts, because they only need to be produced in a single piece or in small batches of less than 50 pieces, they can generally be directly formed by rapid prototyping technology, with low cost and short cycle.

3. Combining rapid prototyping technology with traditional mold manufacturing technology can greatly shorten the development cycle of mold manufacturing and improve productivity. It is an effective way to solve the weak link of mold design and manufacturing.

4. In the application of medical field, there are many researches on the application of RP technology in medical field. Based on medical image data, using rapid prototyping technology to make human organ model has great application value to surgery.

5. Rapid prototyping manufacturing technology is mainly used for art creation, cultural relics replication, digital sculpture, etc.

6. In the field of aerospace technology, the model has complex shape, high precision and streamlined characteristics. Using RP technology, according to the CAD model, the RP equipment automatically completes the solid model, which can ensure the model quality.

7. The application of the home appliance industry has been popularized and applied to a great extent in the home appliance industry, and has received good results.

Rapid prototyping technology is widely used. With the continuous maturity and perfection of the technology, it will be popularized and applied in more and more fields.

Surface Treatment

Surface treatment technology refers to the protection of base materials by modifying the surface of materials or coating a layer of other materials.

The purpose of surface treatment is to meet the requirements of corrosion resistance, wear resistance, decoration or other special functions of the product. For metal castings, our common surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment and spraying surface. Surface treatment is to clean,  deburr, degrease and deoxidizing of the workpiece.

Surface treatment can be divided into four aspects:

Mechanical surface treatment: sand blasting, shot blasting, grinding, rolling, polishing, polishing, spraying, painting, oil painting, etc.

Chemical surface treatment: bluing and blackening, phosphating, pickling, electroless plating of various metals and alloys, TD treatment, QPQ treatment, chemical oxidation, etc.

Electrochemical surface treatment: anodizing, electrochemical polishing, electroplating, etc.

Modern surface treatment: chemical vapor deposition (CVD), physical vapor deposition (PVD), ion implantation, ion plating, laser surface treatment, etc.

Pickling and passivation treatment: it refers to the process of immersing metal parts in pickling and passivation solution until the surface of the workpiece becomes uniform silver white.

1. Electroplating

Electrolysis is the process of attaching a metal film to the surface of metal to prevent corrosion. It is a kind of technology that can improve the solderability, conductivity and aesthetics. It is usually plated with gold, silver, nickel, zinc and tin.

Advantages: after plating, the surface gloss is high and the metal appearance is beautiful. It is a surface treatment process that meets most electronic components.

2. Anodizing

It is mainly the anodization of aluminum material, which uses the electrochemical principle to form a layer of aluminum oxide film on the surface of aluminum and aluminum alloy. This oxide film has special characteristics such as protection, decoration, insulation and wear resistance

Advantages: it can improve the intensity and realize any color except white. It can realize nickel free sealing and meet the requirements of European and American countries for nickel free.

3. Electrophoresis

It is used for stainless steel, aluminum alloy, etc, it can make the products present various colors, keep the metallic luster, and enhance the surface performance, with good corrosion resistance.

Advantages: multi color surface treatment can be done, and surface treatment of complex structure can be realized; And can cooperate with the subsequent processes of sand blasting, polishing and brushed.

4. Micro arc oxidation

The process of applying high voltage in electrolyte solution (generally weak alkaline solution) to form ceramic surface facial mask layer is the result of the synergistic effect of physical discharge and electrochemical oxidation.

Advantages: Ceramic texture, mostly used for appearance, and good heat dissipation performance, but single color, high cost.

5. PVD vacuum plating

Physical vapor deposition (PVD) is a technology that mainly uses physical processes to deposit thin films.

Advantages: the metal surface can be coated with high hard plating and high wear resistance cermet decorative coating.

6. Powder spraying

Powder coating is sprayed onto the surface of the workpiece by powder spraying equipment (electrostatic plastic spraying machine). Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating; The powder coating is leveled and cured by high-temperature baking, and becomes the final coating with different effects (different kinds of effects of powder coating).

Advantages: rich color, highlight and matte optional; Low cost, suitable for building furniture products and chassis shells, etc., with strong ability to shield defects.

7. Metal brushed

It is a surface treatment method that forms lines on the surface of the workpiece by grinding the product to achieve decorative effect. According to the different lines after brushed, it can be divided straight line brushed, random brushed, corrugated brushed, swirl brushed.

Advantages: the wire drawing treatment can make the metal surface obtain a non mirror like metallic luster, and the brushed treatment can also eliminate the fine defects on the metal surface.

8. Sandblasting

A process in which compressed air is used as power to form a high-speed jet beam to spray the sprayed material onto the surface of the workpiece to be treated at high speed, so as to change the appearance or shape of the outer surface of the workpiece surface and obtain a certain degree of cleanliness and different roughness.

Advantages: achieve different reflection or matte. It can clean the micro burrs on the surface of the workpiece and make the surface of the workpiece more flat.

9. Polishing

The surface modification of workpieces using flexible polishing tools and abrasive particles or other polishing media.

Advantages: it does not change any physical properties of the material, and can be used as a pretreatment process for other surface treatments.