Friday, 21 July 2017

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DIY Injection Molding 

I wanted to make solid plastic parts for some of my amateur science experiments. There are a number of ways to make things out of plastic, each with its advantages and disadvantages. Often just cutting raw material to the desired shape works best. Some plastics can be cast by pouring a liquid resin with hardener into a mold (see “DIY Rotocaster,” Make: Volume 41). Vacuum forming works well for making things out of thin sheets of plastic (see “Kitchen Floor Vacuum Former,” Make: Volume 11). I considered making a 3D printer, but for the few plastic parts I envisioned needing, it wasn’t worth the time and money.

Plastic injection molding has been around since thermoplastics were invented. It’s a great way to make many copies of a part quickly, and what I like best is that it’s easy to reuse old plastic objects to make new ones.

So I built an injection molder based on the plans in Vincent R. Gingery’s book Secrets of Building a Plastic Injection Molding Machine. David Gingery could be considered a forerunner of the Maker Movement — he and his son Vincent have written a whole series of books on building tools for the machine shop.

This project should cost between $100 and $200. It depends a lot on where the metal is purchased. I had a lot of the metal already, left over from other projects. Try to find a friendly local iron dealer, rather than getting the metal online or from a hardware store. They’ll often let you pick through their cut-off pile and sell it for almost scrap prices.

Tuesday, 11 July 2017

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The basic idea in Prototype model is that instead of freezing the requirements before a design or coding can proceed, a throwaway prototype is built to understand the requirements. This prototype is developed based on the currently known requirements. Prototype model is a software development model. By using this prototype, the client can get an “actual feel” of the system, since the interactions with prototype can enable the client to better understand the requirements of the desired system. Prototyping is an attractive idea for complicated and large systems for which there is no manual process or existing system to help determining the requirements. 


The prototype are usually not complete systems and many of the details are not built in the prototype. The goal is to provide a system with overall functionality. 

Advantages of Prototype model:

Users are actively involved in the development 
Since in this methodology a working model of the system is provided, the users get a better understanding of the system being developed. 
Errors can be detected much earlier. 
Quicker user feedback is available leading to better solutions. 
Missing functionality can be identified easily 
Confusing or difficult functions can be identified 
Requirements validation, Quick implementation of, incomplete, but functional, application. 


Disadvantages of Prototype model:

Leads to implementing and then repairing way of building systems. 
Practically, this methodology may increase the complexity of the system as scope of the system may expand beyond original plans. 
Incomplete application may cause application not to be used as the 
full system was designed 
Incomplete or inadequate problem analysis. 


When to use Prototype model: 

Prototype model should be used when the desired system needs to have a lot of interaction with the end users. 
Typically, online systems, web interfaces have a very high amount of interaction with end users, are best suited for Prototype model. It might take a while for a system to be built that allows ease of use and needs minimal training for the end user. 
Prototyping ensures that the end users constantly work with the system and provide a feedback which is incorporated in the prototype to result in a useable system. They are excellent for designing good human computer interface systems . 

Wednesday, 5 July 2017

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Rotary kilns are used to uniformly heat lime, cement, carbon, fertilizer, stone and other aggregate materials. As the kiln turns the heated material is mixed, and new material becomes exposed to the flames and hot combustion gasses. Kilns are typically heated by a large flame introduced at the exit end of the process. The hot combustion gasses are then passed along the length of the kiln in a counter-flow direction. Many plants capture the hot gasses as they escape the entry end, and use this heat to pre-heat the product before it enters the kiln.

Kiln plants with two and three station rotary kilns from KHD Humboldt Wedag are top of the line. One reason: highly efficient precalcining systems, which were developed by KHD Humboldt Wedag, revolutionizing the clinkering process.

Rotary kilns no longer have to function as calciners which mean that they can be substantially smaller in size. The advantage for customers is lower investment and operating costs. These systems quickly gained excellent reputations among our customers.

Rotary dryers are almost always used for drawing moisture out of a material. Typically, they operate at temperatures between 800º – 1400ºF. Rotary kilns, however, are concerned with causing a chemical reaction. Therefore, they need to operate at much higher temperatures, between 1000º – 3000º.


Rotary kilns are designed to withstand much higher temperatures than a rotary dryer. Typically, if you are dealing with a direct fired rotary kiln, it is refractory lined with a brick or castable lining. This lining protects the steel shell. Rotary dryers are typically not lined, and their steel is not able to withstand such high temperatures. If you are dealing with an indirect rotary kiln, the kiln is not normally lined, so the shell of the drum has to be made out of a temperature resistant alloy instead of steel.

Thursday, 29 June 2017

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Technical features and applications:

- Cable contains 1 ÷ 4 single mode fiber according to G.652D or G.657A standard.
- The cable is designed small diameter, compact and light, easy to install, handle, transport, suitable indoor and outdoor.
- Applications for systems:
+ Local area network
+ Subscriber Network
+ Internal information
- The specifications of the cable meet ITU-T G.652D, ITU-T G.657A, TCN 68-160: 1996, TCVN 6745: 2000, TCVN 8665: 2011, TCVN 8696: 2011 and IEC. EIA.


Technical features and applications:

- From 2 to 288 SMF fiber.
- Waterproofing technology, Drycore, water penetration and moisture penetration best.
- Small diameter, compact and light in diameter, easy to install, handle and transport.
- High strength is based on the galvanized steel wire braided together.
- The cable is designed for use:
+ Local area network
+ Subscriber Network
+ Internal information system
+ Long distance communication system.
- The cable parameters meet TCN 68-160: 1996, TCVN 6745: 2000, TCVN 8665 and IEC, EIA.

- Number of fiber: From 6 fibers to 144 single mode fiber.
- The optical fibers are placed in a fluid-filled liquid casing (liquid tube) that helps the fiber to easily move inside the tube and protect the fiber from water penetration, external forces as well as changes. Of temperature.
- Optical fibers and fluid tubes are distinguished by the / TIA-598 standard color coding.
- The amount of fiber in a liquid tube, the number of tubes and fibers in the cable core is given in Table 1
Table 1: Regulation of number, color of liquid pipe and quantity of liquid pipe, fill for each type of cable

Sunday, 21 May 2017

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Material 3D 3DMT specializes in metal additive manufacturing and the key component of the technology is material. With a long history of powder metallurgy in ARC Group, this experience transfers to 3DMT with metallurgists on staff, on-site material testing capabilities and heat treatment knowledge.

Metals:
Aluminum – Alsi10Mg, Alsi12Mg,
Titanium – Ti64 (Grade 5)
Stainless Steel – 17-4PH, 15-5PH, GP1, PH1
Maraging Steel – M-300, MS1
Inconel – 625, 718
Cobalt Chrome
Plastic:

ABS – M30, ABSi (translucent)
Nylon
Polycarbonate

3D metal printing is an advanced, next-generation additive manufacturing process for making complex parts with features that cannot be produced by any other method. Parts are created on a special machine layer-by-layer, and this unique process lets you – the product designer – add internal features like conformal cooling channels and lattice structures reduce weight while preserving strength. Because the process is completely computer controlled, you are also able to modify features quickly and easily without additional expense, allowing you to test different versions of a prototype fast. Prototypes can be made in stainless steel, aluminum and titanium.

When combined with our CNC machining and finishing services, we have everything you need to create sophisticated prototypes for applications in medical, automotive, aerospace and other demanding industries.

3D metal printing is an advanced, generation additive manufacturing process for making complex parts with features that cannot be produced by any other method. Parts are created on a special machine layer-by-layer, and this unique process lets you – the product designer – add internal features cooling channels and lattice structures to reduce weight while preserving strength. Because the process is completely computer controlled, you are also able to modify features quickly and easily without additional expense, allowing you to test different versions of a prototype fast. Prototypes can be made in stainless steel, aluminum and titanium.

PCB (Printed Circuit Board)

PCB (Printed Circuit Board) is a thin board where the electronic components, which are in pairs and assemblies, where the sides are made of copper lining to solder the legs of the components. PCB can be more than 1 layer, which I know maximum up to 12 layer.PCB is made of fiber material or the like on the non conductive part. The thickness of copper on PCB is various, there are 35 micrometer there is also a 17-18 micrometer

Other PCB materials are phenolic or pertinax paper, usually brown, this type of material is more popular because of its cheaper price.For PCB in use for Through hole plating, usually wearing a fiberglass, because the fungus does not like this material, and The material is stronger and not easy to bend in comparison with pertinax.PCB can be found in almost all electronic equipment, such as radio, mobile, television, and others.

Monday, 8 May 2017

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PCB (Printed Circuit Board) is a thin board where the electronic components, which are in pairs and assemblies, where the sides are made of copper lining to solder the legs of the components. PCB can be more than 1 layer, which I know maximum up to 12 layer.PCB is made of fiber material or the like on the non conductive part. The thickness of copper on PCB is various, there are 35 micrometer there is also a 17-18 micrometer.

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Other PCB materials are phenolic or pertinax paper, usually brown, this type of material is more popular because of its cheaper price.For PCB in use for Through hole plating, usually wearing a fiberglass, because the fungus does not like this material, and The material is stronger and not easy to bend in comparison with pertinax.PCB can be found in almost all electronic equipment, such
as radio, mobile, television, and others.

There are several different types of PCBs according to their usefulness: 1 side PCB (commonly used in electronic circuit such as radio, TV, etc.) PCB double side (ie both sides of PCB used to connect components) and PCB multi side (PCB part outside or inside used as media Conductor, for example in PC circuits).

Printed Circuit Board

 At its inception in the late 80s, the rapid prototyping process was largely inaccurate and the choice of materials and technologies was limited. Back then, a prototype served as a basis for discussion but could not be used for anything "serious", i.e. in a real production environment.

Since then, accuracy has improved significantly and so has the range of applications and software solutions.

The famous Magics software by Materialise is the ideal solution for driving efficiency throughout your entire Rapid Prototyping process. From importing data to preparing platforms, RP professionals rely on the extensive tools in Magics for all of their software needs.

Complementary to Magics, our revolutionary Streamics™ product provides you with a user-friendly server based system which centralizes all of your customer project data, and which makes it easy to collaborate between your team-members and communicate with your customers.
Streamics™ can also help to automate repetitive or complex part operations (such as support generation, file fixing, and part labeling). Plus, there is a perfect and complete integration between Streamics™ and Magics..

Wednesday, 1 March 2017

Material 3D 3DMT specializes in metal additive manufacturing and the key component of the technology is material. With a long history of powder metallurgy in ARC Group, this experience transfers to 3DMT with metallurgists on staff, on-site material testing capabilities and heat treatment knowledge download.

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Metals: Aluminum – Alsi10Mg, Alsi12Mg, Titanium – Ti64 (Grade 5) Stainless Steel – 17-4PH, 15-5PH, GP1, PH1 Maraging Steel – M-300, MS1 Inconel – 625, 718 Cobalt Chrome Plastic ABS – M30, ABSi (translucent) Nylon Polycarbonate 3D metal printing is an advanced, next-generation additive manufacturing process for making complex parts with features that cannot be produced by any other method. 


Parts are created on a special machine layer-by-layer, and this unique process lets you – the product designer – add internal features like conformal cooling channels and lattice structures to reduce weight while preserving strength. Because the process is completely computer controlled, you are also able to modify features quickly and easily without additional expense, allowing you to test different versions of a prototype fast. Prototypes can be made in stainless steel, aluminum and titanium When combined with our CNC machining and finishing services, we have everything you need to create sophisticated prototypes for applications in medical, automotive, aerospace and other demanding industries. 

3D Metal Printed Prototypes 3D metal printing is an advanced, next-generation additive manufacturing process for making complex parts with features that cannot be produced by any other method. Parts are created on a special machine layer-by-layer, and this unique process lets you – the product designer – add internal features like conformal cooling channels and lattice structures to reduce weight while preserving strength. Because the process is completely computer controlled, you are also able to modify features quickly and easily without additional expense, allowing you to test different versions of a prototype fast. Prototypes can be made in stainless steel, aluminum and titanium. 

When combined with our CNC machining and finishing services, we have everything you need to create sophisticated prototypes for applications in medical, automotive, aerospace and other demanding industries. 3D metal printed prototypes SLA & SLS Rapid Prototypes SLA & SLS are two of the original 3D printing processes. These methods are ideal for making rapid, one-off prototypes in plastic. These prototypes can be used as-is, or to function as master patterns for polyurethane vacuum casting. 

Like with other 3D additive manufacturing processes, you can add complex internal features that can’t be made conventionally. Polyurethane Vacuum Castings Polyurethane vacuum casting is a rapid prototyping technique suited for making up to 30 copies of a master pattern from a silicone rubber mold. The level of detail and surface finish of the copies is dependent on the quality of the master pattern. You choose the casting compound to match your design idea – hard or soft, colored or clear. 

We even offer overmolding to combine two or more different types of material in a single finished casting. The next two photos are considered reversed polarized (RP-SMA). We have a team of specialists who are experts at preparing master samples for casting. Samples can be provided by you or we can make them using CNC machining or one of our 3D printing services such as DMLM, SLA or SLS