injection moulding bg pic

Analysis of the five elements that need to be met in injection molding

Plastic molding is the process of making various forms (powders, pellets, solutions and dispersion) of plastics into products or blanks in the desired shape.The manufacturing process of most cosmetic packaging materials is mainly through the four key processes of mold molding, surface treatment,printing,and assembly.The molding process is an indispensable key part.Injection molding is a method of producing shapes for industrial products.Products usually use rubber injection molding and plastic injection molding.Injection molding can also be divided into injection molding compression method and die-casting method.Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes. Injection molding is realized by injection molding machines and molds.

The five elements that need to be met in injection molding are:

  1. Temperature:Temperature is the first step of injection molding.Temperature can be divided into:drying temperature,material temperature,mold temperature, these are some of the most important factors.The drying temperature is to dry the polymer in advance in order to ensure the quality of the molding,to ensure that the dry and wet of the polymer are within a certain amount;The material temperature is to ensure that the polymer is plasticized normally,and the mold is filled and formed smoothly;
  2. Speed:Speed is divided into:injection speed,Melting speed,loosening and retreating speed,opening and closing mold speed,thimble forward and backward speed.The increase of the injection speed will affect the increase of the filling pressure,and the increase of the injection speed can increase the flow length,and the product quality can be uniform to ensure the quality of the product.High-speed injection is suitable for long-process products,and the size of the product is controlled at low speed;Melting speed affects plasticizing ability,plastic mold processing is an important parameter of plasticizing quality,the higher the speed,the higher the melt temperature,the stronger the plasticizing ability;
  3. Pressure:Pressure is divided into: injection pressure,holding pressure, back pressure,clamping pressure,mold protection pressure,ejection pressure.
  4. Position:The position can be divided into:mold opening position, ejection retreat stroke,metering stroke,leg loosening amount,injection stroke,and buffering amount.The mold opening position is to ensure the normal operation of the demolding parts.The effect of the ejection back stroke on the partial spring return to the ejection limit protection.The metering stroke is to ensure that there is enough plastic to fill the mold to ensure product quality.
  5. Time:The time is divided into:cooling time,sol time,drying time, cooling time,melting time,drying time,cycle,injection time,and pressure holding time.The molding of plastic shell paintingproducts requires a certain period of time.The holding time is to prevent the melt back flow and cooling shrinkage.The cooling time ensures that the product is solidified and prevents deformation;the melting time is to ensure that the glue is fully melted;the drying time is to ensure that the product does not become elongated or defective.

The E-make company has 30 years of experience in custom-made production of injection molding.The plastic injection molding products will be exquisite in appearance,reliable in quality and delivered on time.If you want to customize the high-precision injection molding products.All information from customers was kept secret,we can sign NDA with you before starting any work.If you need any help,please feel free to contact us.

sheet metal fabrication

Sheet Metal Working

Sheet Metal Working
With the characteristics of light weight, high strength, conductivity, low cost and good mass production performance,metal plate is a technology that has been widely used in electronic and electrical appliances, communication, automobile industry, medical devices and other fields. For example,it is an essential part in computer chassis, mobile phone,and so on.
The material of metal plate widely be used in electronic enterprises is SPCC,SECC,SGCC,SUS301,SUS304,etc.There are three main types of sheet metal processing: blanking, bending and stretching. Different processing technologies have different requirements for sheet metal. The selection of sheet metal also need be considered according to the shape of the product and processing technology.The following is the impact of materials on sheet metal processing technology.
a,The influence of materials on punching process.
Punching requires that the plate material should have enough plasticity to ensure the plate will not crack during machining.The soft materials such as pure aluminum,antirust aluminum, brass, red copper and mild steel have good punching performance,which can be blanked to the parts that have a smooth section and a small inclination.The quality of the hard materials is not good after punching,such as high-carbon steel,stainless steel,duralumin and ultralumin, the section unevenness is large, especially for the thick plate material.
b,, The influence of materials on bending process.
The plate materials to be bent should have sufficient plasticity and low yield limit.The plate with high plasticity is not easy to crack when bending. The plate with low yield limit and low elastic modulus has small rebound deformation after bending, and it is easy to obtain the bending shape with accurate size. Materials with good plasticity such as low carbon steel, brass and aluminum with carbon content less than 0.2% are easy to bend and form; Materials with high brittleness, such as phosphor bronze (qsn6.5 ~ 2.5), spring steel (65Mn), hard aluminum, superhard aluminum, etc., must have a large relative bending radius (R / T) during bending, otherwise they are easy to crack during bending.
c,The influence of materials on tensile process.
Sheet metal stretching, especially deep stretching, is a difficult kind of sheet metal processing technology. It not only requires the stretching depth to be as small as possible, the shape to be as simple and smooth as possible, but also requires the material to have good plasticity. Otherwise, it is very easy to cause overall distortion, local wrinkling and even tensile cracking of the parts.

CNC turning machining Service

CNC turning is one of the most basic and most commonly used cutting processing methods.For most work pieces with revolving surfaces,it can be processed by CNC turning machine,such as inner and outer cylindrical surfaces,inner and outer tapered surfaces,end surfaces, grooves,threads,and rotary forming surfaces, etc. .
With the development of modern technology,there are more and more high-strength and high-hardness engineering materials.Traditional CNC turning machine has been unable to meet or realize the processing requirements of certain high-strength and high-hardness materials, while modern hard cnc turning technology can Make it possible and obtain significant benefits in production.The following is a brief introduction to the characteristics of CNC turning machining:
(1)CNC turning machining efficiency is high:
CNC turning uses large cutting depth and high work piece speed,and its removal rate is usually several times that of CNC grinding.CNC lathes can complete various surface machining in one clamping process,while grinding requires multiple installations,so the auxiliary time of CNC turning machining is shorter,and the position accuracy of each processing surface will be higher.
(2)The cost of equipment investment is low.Under the same productivity, the investment of a lathe machine is obviously better than that of a grinder,and the cost of its auxiliary system is also low.In the production of small batches of parts, CNC turning does not require special equipment, and the processing of large quantities of high-precision parts requires high rigidity, positioning accuracy, and repeat positioning accuracy for CNC machine tools.
(3)The lathe suitable for small batch flexible production is a flexible processing method with a wide range of processing.The lathe is easy to operate and the turning fixture is fast.Compared with grinding,hard turning is more suitable for the requirements of flexible production.
(4)Hard CNC turning can obtain better overall machining accuracy.
(5)CNC turning machining surface quality is excellent,processing roundness is accurate,and can ensure high position accuracy on the processing surface,Also will not produce burns and cracks during the cutting process,and most of the heat generated during the processing of the parts will be taken away by the cutting oil.
From the perspective of processing technology and programming, five-axis CNC machine tools have the following advantages in the processing of complex inclined surfaces:
1.Improve processing quality and improve efficiency.
2.Expand the processing technology category.
3.To achieve a new direction of compound development trend.
The E-make team has more than 30 years of combined experience in prototype machining,CNC manufacturing.And has a high-level technological group of 25 peoples.The processing quality of the rapid manufacturing is stable,the processing precision is high,and the appearance is exquisite.If you need any help,please feel free to contact us.

Cnc Machining Acrylic Parts

Acrylic Rapid Prototpying

Acrylic Rapid Prototpying
We usually will use acrylic or PC as material to make prototypes if we need the parts be transparent or semi-transparent.If we have high requirement about the transparency of the product,acrylic is a great choice.
Acrylic,we also call it as PMMA,which is a organic glass.Below is some information about acrylic made prototype.
1.The way of acrylic parts machining.
For quantity production,we usually use injection molding process to produce acrylic product.For prototype production,we prefer to make the acrylic parts by CNC milling,CNC turning or vacuum casting proess,which process is more suitable to use is up to the feature that the product require,such as the strength and structure.For example,the strength of the parts is better if make by CNC machining technology.But for small brach production,vacuum casting (urethane casting) is a nice option.
2.The advantage of acrylic prototype.
Acrylic material have nice transparency,so the acrylic made prototype can be crystal clear after polish.PC prototype also can be polish to clear,but the transparency is not good as acrylic.
3.The disvantage of acrylic protoype
Acrylic material is friable and have poor toughness because of its physical property.Therefor,we need to be very careful as it is is prone to damage during machining.
4.The surface treatment of acrylic prototype.
For some mechanical parts,if we didn’t have special requirement of the surface finish for the acrylic parts,we don’t need to do any surface finish,just the tooling surface is fine.If we need a smooth surface for the parts,we will grind or milled sand the parts.If we need a frosted surface,we will get it by sandblasting.If we need a crystal clear surface,we will need to sand the parts,and then polish them,which will takes many time,so this surface effect is more expensive to get.If we need the acrylic product has mirro surface and with colors,such as shiny rose gold or silver,we will make them by electroplating.This surface looks really great,but will need the parts have very nice smooth surface before plating.So we will need to polish the parts before plating work.
5.The application of the acrylic prototype.
Mostly,we will use the acrylic made parts as cosmetic parts,which means we will require high requirement for the surface finish.Of course,the surface might not so important if just a mechanical parts.
Our factory are professional in making acrylic product in many years,our team have enough experience can help in acrylic product deverlopemnt and production.If you have any project need to make prototypes or production,we are glad to receive your inquiry.

Application of ABS material in 3D printing

ABS is one of the main materials for 3D printing.The reason why it can become a consumable for 3D printing is determined by its characteristics. ABS materials have heat resistance,impact resistance,low temperature resistance,chemical resistance and excellent electrical properties,Product dimension stability and other characteristics.

At present,ABS is the most stable material among 3D printing materials. It has good hot melt and impact strength,and it is also the preferred engineering plastic for fused deposition molding 3D printing process.For now,ABS is mainly pre-made into silk and powdered.The application range of ABS materials covers almost all daily necessities,engineering supplies and some mechanical supplies,and has a wide range of applications in automobiles,home appliances,consumer electronics and other fields.

Printing performance:

  1. ABS materialis quite easy to print.No matter what kind of extruder is used,the material will be extruded smoothly without worrying about clogging or solidification.However,the steps of ABS material after the extruder are a bit difficult.ABS material has the characteristic of shrinking when exposed to cold,and will partially fall off the heating plate and hang in the air,then it will be causing problems.In addition,if the height of the products that needs 3D printing is very high,the ABS material sometimes peels off the entire layer during the 3d printing process.Therefore,the heating plate cannot be omitted when ABS material is used for 3d printing.
  2. ABS material is relatively flexible,so it is suitable for making wearable products.

Strength:As long as 3D printing is carried out at an appropriate temperature and the layers of materials are firmly adhered,the strength of ABS will become quite high.But the ABS material is also flexible after 3D printing,even if it is under pressure,it will only bend and not break.

Odor: The biggest disadvantage of ABS material is that it produces a strong odor during 3d printing.Regardless of the material,it is recommended that you perform 3D printing in a well-ventilated room. This is especially true when using ABS materials.

ABS-M30 is a production-grade plastic that is specially designed for 3D printing with FDM technology.This strong and common material helps to test and repeat the work more frequently,Ultimately reduce risks and create better products,speeding up the time to market.

Due to performance reasons and the price is more suitable,3d printing ABS material it is very suitable for conceptual models and parts with medium requirements, including functional prototypes.The colors of ABS material are natural color,white,black,dark gray,red and blue.In addition,the color can be customized when 3d printing.

The E-make company is a rapid prototyping manufacturer.

Our factory provides high quantity 3D printing、Vacuum casting service、CNC machining service and injection molding service.

All information from customers was kept secret,we can sign NDA with customer before starting any work.

If you need any help,please feel free to contact us!

Car rear light prototype manufacturing

Car rear light prototype manufacturing

Name:car rear light prototype


Color:can custom any color according customer requirements.




Size:The dimensions of 3D drawings provided by customers shall prevail



Types:prototype of auto parts


Characteristics of prototype:


1,Clear lines,relying on imported equipment and unique process design, precision machining makes the line stripe path and outline more clear and smooth.


2,High efficient,strong strength.The company focuses on prototype processing for 12 years,we have accumulated a lot of relevant experience and talents,can efficiently meet customer requirements ,Meet customer requirements under the premise of faster order completion.


3,Higher precision, imported equipment, precision tolerance ±0.05mm.


4,Fast efficiency and short processing time.


Excellent talents, a wider range of processing size.


 1,High quality and reasonable price

 2,Machining, drawing or sample.

3,Can according 3D drawings and 2d drawings。

4,3D drawing file format :IGS/X-T/PRT/STP /STL is all available.

5,Custom samples and technical specifications are welcome。

Automobile rear light hand plate model can be carried out:

1,CNC machining



4, electroplating


E-make prototype advantages and strength characteristics:

1,Quote in 1 hour, delivery in 2 working days.

2,Our company has SLS and DLP from Germany, SLA rapid prototyping equipment from America, Stratasys 3D printer from America, metal powder 3D printer from America, and ProJet860 full-color 3D printing equipment from America. Taiwan imported CNC machining center 10 sets, vacuum casting, low pressure perfusion.

3,Prototype appearance can be spray paint, electroplating, wire drawing, screen printing.

4,We can make 3D printing prototype, plastic prototype, hardware prototypr, function prototype, appearance prototype, transparent prototype, high temperature resistant prototype, coffee machine prototype, kitchen appliance hand board, auto parts hand board and so on.

5,Packing: inner packaging: pearl cotton, transparent bag. Outer package: carton.


If you need do auto parts prototype,please feel free to contact us .

CNC Milling Aluminum Parts With Powder Coating

The Advantage And The Disvantage Of Powder Spraying Technology

The Advantage And The Disvantage Of Powder Spraying Technology
About the casting parts,generally we will use powder coating process to do the surface treatment,which can cover the rough surface of metal parts.Below is some information about the powder coating process.
1.High construction efficiency.
For coating the parts with wide place,we can use multiple electrostatic spray gun to spray the parts at the same time,which can save the coating time.
2.The quality of coating is great,such as the adhesive force ,the corrosion resistance and the physical strength.
3.A thicker coating can be obtain with one spray.
4.Powder coating can cover some defect of parts,which can not be make by painting.Also,powder coating is more environmental-frinedly because the material is nontoxic.
5.Strict environmental protection measures are not required when we do powder coating because this process is no pollution to the air.Also,it wont have the problem such as exhaust emission.

1.Powder coating process is not suitable for spraying the parts with complicated structure.
2.The operator need to be very careful when spraying,otherwise,it will cause electric shock and set fire alarm.
3.The adhesion and durability are not well, and the control effect is unstable.
4.There will be dust during construction, which requires a special recovery system, which requires a large investment.
5.Paintability is worse than paint a little.

Die-casting service

Die-casting aluminum is a kind of pressure-casting part.It uses a die-casting machine equipped with a casting mold to pour the heated liquid aluminum or aluminum alloy into the inlet of the die-casting machine.After die-casting by the die-casting machine,the casting is constrained by the mold Shapes and dimensions of aluminum parts or aluminum alloy parts.

The advantages of custom-made die casting are:

  1. You can design your own appearance,completely personalized customization,as long as you have an idea,we can help you complete it.
  2. There are many options for metal surface treatment technology,such as general electroplating process,painting, oil pump,electrophoresis,etc.We can all help you customize die casting;
  3. You can also customize your own LOGO.
  4. The raw materials can also be selected,aluminum die-cast casing and aluminum alloy profiles,the metal texture after pressing will be very good.

The raw materials used in die casting are different.Die casting products can be divided into aluminum alloy casting, magnesium alloy casting,zinc alloy casting,copper alloy casting and other categories.

Aluminum alloy die-casting is a kind of pressure-casting parts, and its advantages are mainly divided into 5 aspects:

  1. Aluminum alloy has better thermal conductivity,electrical conductivity and cutting performance.
  2. Aluminum alloy has low density and high strength,and the ratio of tensile strength to density is 9-15.When working at high or low temperature,the aluminum alloy can also maintain good mechanical properties.
  3. Aluminum alloy is easy to stick when die-casting,and the iron mass fraction of die-cast aluminum alloy is generally controlled in the range of 0.8% to 0.9% to reduce the phenomenon of sticking.
  4. Aluminum alloy has good corrosion resistance and oxidation resistance.Most aluminum alloys have good corrosion resistance in fresh water,sea water,concentrated nitric acid, nitro-hydrochloric acid,gasoline and various organic substances.

Because of its low density and high-quality performance ratio, aluminum alloy has greatly reduced the weight of the car body, and has outstanding safety performance.It has become a new type of car body material recently promoted by car manufacturers.The application proportion of die-casting aluminum alloy in the car body is showing a significant upward trend.At present,the aluminum alloy die casting process has been widely used in various fields.The main use is still in the parts or shells of some equipment.

The E-make team has more than 30 years of combined experience in prototype machining,CNC manufacturing,Die casting service.We can provide high-quality metal/aluminum alloy die-casting services!And has a high-level technological group of 25 peoples.The processing quality of the rapid manufacturing is stable, the processing precision is high, and the appearance is exquisite.If you need any help,please feel free to contact us!


Metal 3D printing


Metal 3D printing

What is metal 3D printing?

Metal 3D printing is a process of manufacturing three-dimensional parts based on digital files. It usually uses layer-by-layer processing or solidification of thin metal powder materials to make complete parts. This technology can produce complex parts that cannot be achieved by traditional techniques such as die casting, forging and CNC machining.

The advantage of metal 3D printing;

3D printing has many advantage, especially if you know how to optimize product designs to take advantage of them. Advantage include:

Metal 3D printed parts are completely dense, containing complex geometric shapes and precise internal features that cannot be manufactured using traditional machining alone.

The design can be done quickly with minimal material waste while maximizing strength.

Conformal cooling channels greatly improve performance and resistance to thermal stress, making it ideal for aerospace and automotive applications
Multiple identical parts can be make on one machine at the same time, which greatly improves production efficiency.

Metal 3D printing process:

First, a 3D CAD file must be provided for the design. In order to get the best results, our engineers must check your CAD drawing files in advance and optimize the design if necessary. This can include optimizing the build direction and adding support structures to areas where gravity may cause the features to distort during printing. These support will be removed later

We then used specialized software to cut the drawing into multiple cross-sectional layers, with each layer representing a 20-60μm thickness of the final shape.Finally, we upload the slice file to the machine to be printed.Using the Renishaw AM250, an advanced metal 3D printer for rapid prototyping and manufacturing.

Metal 3D printing tolerances:

The general tolerance for metal 3D printing is +/- 0.5mm. However, it depends significantly on the geometry of the part being printed. See more guidelines to follow when designing metal 3D printing.

Metal 3D printing materials:

Currently, we provide 3D metal printing of titanium, stainless steel, maraging steel and aluminum. Each material has unique advantages related to mechanical properties, weight, corrosion resistance, etc. Economic costs also need to be considered, so our engineers are happy to advise you on the best materials for your application and budget.

If you need to make metal parts quickly,E-make will be your best choice.