Crusher equipment mine production as the main apparatus, the main sizes for crushing stone crusher equipment mainly jaw crusher, impact crusher, impact crusher, double-roll crusher, hammer crusher, and Cone crusher and other equipment. Introduction to the troubleshooting points of the crusher Crusher three fault: Troubleshooting bearing, and the fixed shaft troubleshooting, troubleshooting the rotor core. Below we will analyze the three major troubleshooting points: First, the bearing fault repairs the worn parts The shaft is rotated by the bearing support, which is the heaviest part of the load and is a component that is easily worn. 1 fault check In-service inspection; when the rolling bearing is short of oil, you will hear the sound of “bone bonesâ€; if you hear the sound of a discontinuous “stalkâ€, the bearing steel ring may be broken. When the bearing is mixed with sand or other debris or the bearing parts are slightly worn, slight noise is generated. Check after disassembly; first check whether the crusher bearing rolling element, inner and outer steel ring is damaged, rust, scar, etc., then pinch the inner ring of the bearing, and flatten the bearing, the other hand push the outer rigid ring, if The bearing is good, the outer steel ring should rotate smoothly, there is no vibration and obvious stuck in the rotation, and the outer steel ring does not reverse after stopping. Otherwise the bearing is no longer usable. The left hand is stuck in the outer ring, and the right hand pinches the inner steel ring and pushes it in all directions. If it feels loose when pushed, it is severely worn. 2 fault repair The rust on the outer surface of the bearing can be erased with sandpaper and then cleaned in gasoline; or if the bearing has cracks, the inner and outer rings are broken or the bearing is excessively worn, the new bearing should be replaced. When replacing a new bearing, use the same bearing as the original model. Second, the shaft failure repair 1 journal wear; when the journal wear is not large, a layer of chrome can be plated on the journal and then ground to the required size; when there is more wear, it can be surfacing on the journal and then cut and polished on the lathe; If the journal wear is too large, it is also turned 2-3 mm on the journal, and then a sleeve is placed, which is placed on the journal and then turned to the required size. 2 axis bending; if the crusher shaft is not bent, it can be repaired by polishing the journal and slip ring; if the bending is more than 0.2mm, the shaft can be placed under the press, and the pressure can be corrected and corrected in the bending position. The rear surface of the shaft is polished with a lathe; if the bending is too large, a new shaft is required. Third, fixed, rotor core troubleshooting Both the stator and the rotor are laminated by mutually insulated silicon steel sheets, which are the magnetic circuit portions of the motor. The damage and deformation of the stator core are mainly caused by the following reasons. 1 The crusher bearing is excessively worn or poorly assembled, causing the stator and rotor to rub, causing damage to the surface of the iron core, which in turn causes short circuit between the silicon steel sheets, and the iron loss of the motor increases, causing the temperature rise of the motor to be too high. At this time, use tools such as fine boring to remove the burr, eliminate the short-circuit of the silicon steel sheet, clean it, apply the insulating varnish, and heat and dry. 2 Excessive force when removing the old windings causes the slots to be skewed and flared outward. At this time, tools such as needle-nosed pliers and wooden hoes are used for dressing to reset the gullets, and a hard insulating material such as green paper or rubber wood is added between the gap-free silicon steel sheets which are not well-reset. 3 The surface of the core is corroded due to moisture and other reasons. At this point, it needs to be sanded and cleaned, and then coated with insulating varnish. 4 Around the group grounding, high heat is burned out of the core groove or tooth. The deposit can be removed by a tool such as a chisel or a scraper, and dried with an insulating varnish. 5 The iron core and the base are loosely combined to tighten the original set screw. If the positioning screw fails, re-drill the positioning hole on the base and tap the wire to tighten the set screw.
As a single sided PCB manufacturer, Jinghongyi PCB has been single sided PCB for many years. Production and manufacturing experience, with a very exquisite single sided PCB manufacturing process flow chart.
Basically, there is no challenge for PCB manufacturer to produce single sided PCB and the technology is quite mature nowadays. The main focus for PCB manufacturer is how to control production cost and save more cost for customers.
It is the type of a single layer PCB which is made up a rigid material such as fiber glass. These PCBs are inflexible and prevent the circuit from bending and breaking. Currently these are used in different types of devices such as in calculators and power supplies etc.
It is the type of a single layer PCB which is mode out a flexible material instead of a rigid material and for this purpose plastic materials are used. It has so many advantages over single layer rigid pub but it fabrication cost is so much high.
It is the type of a single layer PCBs which is used for high frequency circuits normally in giga hertz. These PCBs are made out a Teflon or polyphenylene oxide (PPO) material. During choosing high frequency single layer PCB many aspects are keep in mind such as dielectric loss, thermal expansion and water absorption etc.
It the type of single layer PCBs which is made out by the combination of plastic and fiber glass. Both materials are combined together into single layer. It has so many advantages over single layer rigid and flexible PCB such as it reduces the weight and size of overall PCB.
single sided vs double sided PCB
Single Sided PCB, Single Layer PCB, 1 Layer PCB, making circuit boards JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com
The Single Most Important Thing You Need To Know About SINGLE SIDED PCB
We can produce single-sided copper PCB, single sided copper clad PCB board, single sided flex PCB.
We know that when you choose single sided PCB manufacturer, product quality is one of the first factors you need to consider. We are not only engaged in PCB manufacturing for many years, but also one of the large-scale PCB manufacturers in China. We can not only produce single sided PCB, but also double-sided PCB, Multilayer PCB , Aluminum PCB and so on.
In addition to product quality, you may also need to consider the single sided PCB price factor. If you choose us as your partner, you can rest assured that we will be able to provide you with not the best price on the premise of guaranteeing product quality, but the price that we both feel is very reasonable. What do you think?
In this article, we will elaborate on the definition, type, cost components, structure, advantages and disadvantages, manufacturing process and raw materials of single sided PCB. Finally, we will introduce the application of single sided PCB and the differences between single sided PCB and Double Sided PCB. And how to choose between single sided PCB and double sided PCB.
What Is Single Sided PCB
Single-sided PCB diagram mainly used Network Printing(Screen Printing), that is, resist on copper surface, After etching, mark the welding resistance, and then finish the hole and the shape of the part by punching.
Fundamentally, single-sided and double-sided printed circuit boards serve the same purpose. Both serve as catalysts for electrical connections between components, however there are some key differences that set them apart from each other. More specifically, they differ in the costs associated with production and development processes, as well as ampacity differences.
With the appearance of electronic transistor, single sided PCB was developed in the early of 1950, which is mainly manufactured in USA. Single-sided PCB was manufactured by copper etching directly at that time. During 1953 to 1955, Japan use imported copper make out paper phenolic aldehyde copper substrate, and apply mainly on radio products. In 1956, single-sided PCB technology was made big progress with the appearance of professional PCB manufacturers from Japan. In the early stage, copper substrate mainly used paper phenolic aldehyde, but because paper phenolic aldehyde with the factors of low electric insulation, bad solder thermal stability, twist issue etc, paper epoxide resin and glass fiber epoxy resin was developed soon after. Currently, paper epoxide resin is widely used in consuming electronic.
Types of Single Layer PCB
It the type of single layer PCB which is made out with aluminum material substrate. The design of this PCB is almost same as copper backed PCB but only difference is that, in these PCBs aluminum substrate is used instead of copper. Aluminum backed is used with thermal insulating material for transferring the heat from insulating material to back.
What Goes Into Determining single sided PCB Costs and price
No matter whether manufacturing a single-sided PCB, double-sided PCB, or multilayer PCB, three main cost categories exist: Primary production costs, dependent costs, and overhead costs.
Often, single layer PCB are used for simple devices and usually cheaper than multilayer PCB.
Multilayer PCB has one or multiple conductor patterns inside the board, this increases the area available for wiring. multilayer PCB, such as 4 Layer PCB , 6 Layer PCB and 8 Layer PCB are usually used for more complicated devices. For example, smart phones use 12 layers due to the various demands of the circuit. As a result, multilayer PCB circuit boards are more expensive.
You can break them down into the following categories:
Layout alters the cost balance. While the number and size of holes remain the same with single-sided PCBs, two different circuit designs on one substrate change the number of holes and add vias.
Because double-sided PCBs welcome complex circuit designs, layout also becomes a dependent factor. As the number of traces increase, costs increase. Smaller surface mount components fastened to the bottom side change the trace spacing. As the space between the traces narrows, costs can jump 5 to 10 percent.
Different layouts may require different hole sizes and the use of laser rather than mechanical drills. Smaller hole sizes and larger hole counts drive the cost higher because of a change in the manufacturing process.
Advantages of Single Sided PCB
Single Layer PCB Disadvantages
Despite their cost advantages and other perks, single-layer boards are not the right choice for every project due to the limitations they have, which include:
How to make single sided PCB
Single sided PCB manufacturing Process flow chart
One thin layer of thermally conductive but electrically insulating dielectric is laminated with copper. Soldermask is usually applied on top of the copper.
Cutting - Cleaning - Drilling - Cleaning - PTH - Panel - Plating - Cleaning - Photolithography - Image Transfer - Inspection - Copper/Tin - Plating - Coating - Removing/Etching/Tin - Removing - Inspection - Cleaning - Solder - Mask - Exposure/Develop/Inspection - Prepreg - Screen - HASL - Conformal - Coating - Post - Soldering - Cleaning - Test - Final Inspection - Packing
Single layer PCB Raw Material
Construction of Single Sided PCB
The base material, which is also named as substrate, is composed of insulating fiber glass which gives PCB strength and compact look. The nature and type of base material defines if board is going to be Flexible PCB or Rigid PCB.
Above substrate, there lies a copper layer which provides conducting path for various components on the board. The copper thickness is different for different boards depending on your needs and requirements and is defined in ounces per square foot.
On the top of copper foil, there exists a solder mask layer. This layer is mainly used for protection and makes the copper foil insulating which helps in avoiding the conduction in case direct contact happens with some conducting material.
On the top of all layers, there exists a silkscreen layer that is mainly used for adding symbols and characters on the board so a common person can anticipate the clear understanding of the board.
Single-Sided PCB Applications
What Is Double-Sided PCB
It need circuits on both sides. Via is the holes on boards, coated with metal and it can connect wires on both sides. Because the area of Double-sided PCB is twice as large as the Single-sided PCB, and because the wiring is interleaved, which is better suited for circuits that are more complex.
Someone may feel confused that if one Double-sided PCB, wires on both sides while Electronic parts only one side, is this a Double-sided board or a single onel? The answer is obvious. This kind of board is a Double-sided board, it's just install a component on the Double-sided board.
Differences Between Single sided PCB and Double sided PCB
Single and double sided printed circuit boards share the same material make-up: FR-4, which is a form of fiberglass mixed with epoxy. In modern manufacturing, this is usually layered with copper for conductivity and then coated in solder mask for a professional finish. Sometimes, in a process called silk screening, industrial printers print markings and labels on the board as well.
Single-sided PCBs consist of the FR4 insulating core substrate and a thin layer of copper coating on the bottom or solder-side of the substrate. Through-hole components mount on the top or component-side of the substrate with the leads passing through to the bottom side and soldered to the copper pads and tracks. Surface mount components mount directly to the solder side. The primary difference between the two boards will be in conductor placement.
Double-sided boards rely on the same core substrate but have conductors on both sides of the substrate. Very simply, a double-sided board delivers twice the area for conductors. Complex routing can occur with through-hole components mounted on the top layer and surface mount components mounted on the bottom layer. Plated through holes establish [vias" or the electrical connections between the two sides.
Choose Single Sided PCB or Double Sided PCB?
Which PCB you pick depends on your needs and requirements. Sometimes single sided PCBs are more suitable for project design as compared to double sided PCBs and vice versa.
Before you pick any type of PCB for your project, you must take one thing into consideration that single sided PCB layouts are more difficult to route as compared to double sided PCB, but following are the reasons why you should put an effort for making and picking single sided PCB over other PCBs.
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