Tuesday, 15 August 2017

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A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate. Components (e.g. capacitors, resistors or active devices) are generally soldered on the PCB. Advanced PCBs may contain components embedded in the substrate.

PCBs can be single sided (one copper layer), double sided (two copper layers) or multi-layer (outer and inner layers). Conductors on different layers are connected with vias. Multi-layer PCBs allow for much higher component density.

FR-4 glass epoxy is the primary insulating substrate. A basic building block of the PCB is an FR-4 panel with a thin layer of copper foil laminated to one or both sides. In multi-layer boards multiple layers of material are laminated together.

Printed circuit boards are used in all but the simplest electronic products. Alternatives to PCBs include wire wrap and point-to-point construction. PCBs require the additional design effort to lay out the circuit, but manufacturing and assembly can be automated. Manufacturing circuits with PCBs is cheaper and faster than with other wiring methods as components are mounted and wired with one single part.

A minimal PCB with a single component used for easier prototyping is called a breakout board.

When the board has no embedded components it is more correctly called a printed wiring board (PWB) or etched wiring board. However, the term printed wiring board has fallen into disuse. A PCB populated with electronic components is called a printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). The IPC preferred term for assembled boards is circuit card assembly (CCA), and for assembled backplanes it is backplane assemblies. The term PCB is used informally both for bare and assembled boards.

Modern PCBs are designed with dedicated layout software, generally in the following steps:
Schematic capture through an electronic design automation (EDA) tool.
Card dimensions and template are decided based on required circuitry and case of the PCB.
The positions of the components and heat sinks are determined.

Layer stack of the PCB is decided, with one to tens of layers depending on complexity. Ground and power planes are decided. A power plane is the counterpart to a ground plane and behaves as an AC signal ground while providing DC power to the circuits mounted on the PCB. Signal interconnections are traced on signal planes. Signal planes can be on the outer as well as inner layers. For optimal EMI performance high frequency signals are routed in internal layers between power or ground planes.
Line impedance is determined using dielectric layer thickness, routing copper thickness and trace-width. Trace separation is also taken into account in case of differential signals. Microstrip, stripline or dual stripline can be used to route signals.

Components are placed. Thermal considerations and geometry are taken into account. Vias and lands are marked. Signal traces are routed. Electronic design automation tools usually create clearances and connections in power and ground planes automatically.
Gerber files are generated for manufacturing.
"Source https://en.wikipedia.org/wiki/Printed_circuit_board

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

Tuesday, 7 February 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.

3D Metal Printing 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 – 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.