Our Offered Machines to you

Who are in extremely love with eco friendly system..

HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

process of removing copper from pcb

How to Remove Copper From a PC Board Engineering

Jan 21, 2014· How to Remove Copper From a PC Board. by: Karen Lin Jan 21,2014 3528 Views 0 Comments Posted in Engineering Technical. PC Board printed circuit board. All PC boards have a thin layer of copper that adheres to them. This copper is the wiring or traces for conveying an electrical current to all of the components that are soldered onto the board.

More

A Copper Removal Process for Printed Circuit Board

Removal of copper from printed circuit board (PCBD) industry wastewater sludge by chelant extraction and subsequent cementation by powdered irons were studied. Aqueous chelant solutions of 0.1 M ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA) were used to treat sludge from three PCBD factories.

More

How to Remove Copper From a PC Board Our Pastimes

All PC boards have a thin layer of copper that adheres to them. This copper is the wiring or traces for conveying an electrical current to all of the components that are soldered onto the board. You can recycle used PC boards, once you have removed all of the electronic components.

More

How to remove copper from waste circuit board? FAQ

Printed circuit board disposal plant main role is in view of the present more and more electronic products that generate a lot of PCB, the PCB recycling can choose two ways, one is Copper Electrolysis equipment for e waste processing, another is physical recycling,

More

Dissolve the Copper Print Your Own Circuit Boards

Jun 23, 2015· Carefully place the copper clad in the acid bath and leave in a well ventilated area for 10 minutes. After 10 minutes, check to see if the copper has been dissolved. If there is still copper left on the board, use a plastic disposable spoon to gently stir the acid, moving it across the surface of the board.

More

How to remove copper from inner planes on cut PCB

The sections of PCB that I'm removing are away from the RF section. The area near the portion that I am removing contains power supply and accessory connector stuff. One section is bare PCB with a number of test and factory-programming pads, the other section contains an

More

Stripping and Etching Process of PCB Sierra Assembly

Apr 28, 2017· PCB Stripping Process. Post etching process, the copper present on the PCB gets covered either by electroplated tin or tin/lead. You can use concentrated Nitric acid to remove the tin. Nitric acid is very effective in removing tin, and does not damage the copper

More

Direct recovery of copper from printed circuit boards

Oct 01, 2014· In this paper, a novel process to produce copper from ground and concentrated printed circuit board (PCB) powder is presented. In this process, a powder sample containing approximately 48% copper and 40% other metals, as well as 12% non-metallic materials, was anodically dissolved in an acidic copper sulfate solution, while copper ions were simultaneously reduced on the cathode,

More

Detailed Procedures of Plating Copper for PCB Processing

Sep 14, 2018· ——Technical Analysis of Plating Copper for PCB Processing. Electroless plating is widely used in the printed circuit board (PCB) production and processing which has holes on that and it can also be called PTH(Plate Through Hole), the main purpose is to deposit a layer of copper through a series of chemical treatment methods in the conductive substrate, and then increasing the thickness of

More

PCB Manufacturing Process A Step by Step Guide PCBCart

Laminate serves as an ideal body for receiving the copper that structures the PCB. Substrate material provides a sturdy and dust-resistant starting point for the PCB. Copper is pre-bonded on both sides. The process involves whittling away the copper to reveal the design from the films. In PCB construction, cleanliness does matter.

More

Wet PCB Etching Using Acidic and Alkaline Methods Sierra

Dec 02, 2020· What is PCB etching? PCB etching is a process of removal of unwanted copper (Cu) from the circuit board. When I say unwanted, it is nothing but the non-circuit copper that is removed from the board as per the PCB design.As a result, the desired circuit pattern is achieved.

More

Learn About PCB Manufacturing Processes Sierra Circuits

In PCB fabrication, etching is a process of removal of unwanted copper (Cu) from the circuit board. The unwanted copper is nothing but the non-circuit copper that is removed from the board. As a result, the desired circuit pattern is achieved. During this process, the base copper or the start copper

More

Printed circuit board milling Wikipedia

Printed circuit board milling (also: isolation milling) is the process of removing areas of copper from a sheet of printed circuit board material to recreate the pads, signal traces and structures according to patterns from a digital circuit board plan known as a layout file. Similar to the more common and well known chemical PCB etch process, the PCB milling process is subtractive: material

More

PCB Fabrication Techniques

Feb 06, 2019· The film is aligned with the copper surface of the board and subjected to UV light. Only the exposed areas of the photoresist harden into place, protecting the copper traces underneath. The remaining liquid photoresist is removed and the board is ready for etching to remove the excess copper leaving the traces behind.

More

Printed Circuit Board Fabrication Tin Stripping

Oxidation is the first step in any metal stripping process, and the purpose of which is to remove electrons from a substance. In the case of stripping tin or tin/lead, the oxidizer is nitric acid. Unfortunately, we are all too familiar with the oxidation, or tarnishing of copper.

More

How To Etch A PCB (Printed Circuit Board) A Beginners Guide

A number of stages are involved in proper PCB fabrications which include designing, layout, routing, etching & troubleshooting. In this article, we will take a deep dive into the step by step process on How to Etch a PCB. PCB Etching is the process of copper-clad being removed from another substrate surface.

More

Removing Tarnish from PCB Pads, Holes, Contacts, and

Removing Tarnish from PCB Pads, Holes, Contacts, and Connectors. Tarnishing is a chemical change on the surface of a metal due to compounds in the air. Tarnish can form on a printed circuit board, on the contacts of a switch, on the pins of a part, or on connectors. Tarnish makes soldering more difficult and reduces electrical conductance.

More

Removal of Non-functional Pads from Inner Layers

Non-functional pad features great improvement to PTH copper in the process of manufacturing PCB via wall and plays an effective role in stopping via copper from falling and dealing with quality problems such as via wall crack. Of course, NFP features some variables and

More

Is Extracting Gold from Printed Circuit Boards Possible

Extracting gold from a printed circuit board is definitely possible but the amount of the gold in the PCB has to be evaluated first. The process involves a number of steps which have to be carried out carefully in order to get the desired results. There are some instruments and acids involved in the process. Necessary precautions must be taken before starting the procedure.

More

4 Techniques for Removing Solder Mask

Mechanical erasers, like the type a draftsman would use, can speed up the process. This technique is controlled and methodical, most commonly used when removing a thin layer of solder mask. It can be used in conjunction with other removal techniques as a final surface preparation step.

More

PCB Manufacture: How are PCBs Made » Electronics Notes

Basic PCB manufacturing process. With the bare PCB boards chosen and available the next step is to create the required tracks on the board and remove the unwanted copper. The manufacture of the PCBs is normally achieved using a chemical etching process. The most common form of

More

Printed Circuit Board Recycling Methods

Printed circuit board edge trim has high copper content ranging from 25% to 60%, as well as precious metal content (> 3 ppm). The process for recovery of copper and precious metals from printed circuit board edge trim is similar to that from waste printed circuit boards. In general, the edge trim is 0 10 20 30 40 50 60 urry de m c l e r s mrd m r %

More

URBAN MINING! Recovering gold, copper, precious metals

We are excited to post this video and show you all our progress on processing printed circuit boards (PCB's) for gold, copper and other metals with our hamme...

More

PCB Recycling Plant-Waste Circuit Board Recycling

Waste printed circuit board crushing and recycling production line is mainly used for the separation of metal from non-metal in waste circuit board, copper clad board, waste PCB breadboard and other material. The separation purity of the whole PCB recycling equipment is up to 98%.

More