Essential Knowledge of Circular Saw Blades (Part 1)

 Although they look similar, saw blades are designed for specific tools and uses!

In addition to the brand of saw blades, choosing the right type of Circular Saw Blade determines whether a high-quality saw can be obtained, and in most cases, the saw blade provided with the new tool may be more suitable for on-site cutting. In fact, in the wood processing process, due to the difference in equipment, the use occasions and functions of saw blades are also different. In order to focus on the discussion of saw blades for workshops such as table saws, we are not concerned about the wider uses and materials of saw blades. , Specifications, technical parameters, and types for detailed discussion.

If you want to find the right saw blade, you must understand the following ten points. China Circular Saw Blades supplier will introduce to you:

■Saw blade diameter

Each type of mechanical equipment and hand-held power tools usually only accept saw blades of a specific size: for table saws, usually 254mm (usually 250mm for saw blades sold in the domestic market); for hand-held circular saws, usually 165mm or 190mm; for miter cutting Saws and rocker saws, usually 254mm or 304mm; for sliding table saws, usually 315mm or 350mm, or even larger diameter saw blades. These tools and equipment can use smaller saw blades (such as dado saw blades), but if the use range of the saw blade is set, do not try to use a larger saw blade. It may be difficult to find replacement saw blades of certain sizes, so consider whether the saw blade is suitable and usable before buying.

■Saw/saw road

The saw slit/saw path is also called notch. The “cut” of the saw blade refers to the thickness of the groove that the saw blade will cut. It is also usually used to define the thickness of the saw blade itself or at least the widest point on the saw blade. Thickness affects cutting width, cost, power consumption, and wood loss during processing. The cut is usually wider than the saw blade base. If you look at the structure of the carbide circular saw blade, you will see that the saw teeth are welded to the saw blade and are thicker than the saw blade body. For high-speed steel saw blades, although the saw path is still thicker than the saw blade, the saw teeth and the saw blade are integrated. This is due to the "offset" of the teeth and the blade. This means that they are slightly bent to one side, alternating from one tooth to the next. Another thing that may affect the saw gap is the flatness of the saw blade. If the saw blade is slightly warped, the teeth will not follow each other in exactly the same straight line but will swing back and forth, just like a car tire mounted on a curved rim. This oscillation actually causes the saw blade to cut teeth that are wider than the allowable thickness of the teeth.

Since metal plates are usually rolled in a forging plant, then unrolled and cut into plates, it may not be completely flat before manufacturing. The eye may not see the bending amount of the saw blade, but it may still cause the sawing groove to be larger than the thickness of the saw blade and teeth. Very high-grade saw blades are made of unrolled steel from steel mills. This kind of steel is much more expensive than ordinary steel, and the processing technology during processing is complicated. Saw blades made of this steel will not swing so that the cutting is as smooth and clean as possible.

The thicker the saw blade, the less likely it is to bend (the wider the cut). Therefore, heavy-duty fixed table saws usually use 3.2mm saw blades, because the power provided by this type of table saw can easily cut high-density hardwood. For table saws, miter saws, and radial saws with a motor rated power of 1.1kw or less, use thin-cut saw blades (approximately 2.4mm) to obtain greater performance power. Portable circular saws, especially lithium battery hand-held circular saws, use even thinner blades. It is almost impossible to find a 3.2mm saw blade for a portable saw. These ultra-thin saw blades exert less stress on the saw motor and will not bend significantly due to their smaller diameter.

Circular Saw Blade

■Tooth type

Nowadays, almost all saw blades used have carbide teeth, and their sharpness is longer than that of all-saw blades. The manufacturer grinds the teeth into the shape that best suits the specific cutting action. If you look closely at the surface of the teeth, you will see that the teeth are ground into a certain shape. For example, the use of alternating left and right beveled teeth (ATB) can minimize the edge chipping of wood and veneer plywood. This tooth profile is used for general purpose, crosscut and plywood/melamine saw blades. The same is true for crosscut saws in our hand saws. Class tooth shape. The flat-tooth (FTG) saw blade used for slitting has flat teeth and no bevel, which helps to remove debris on the kerf. The combined tooth profile uses a mixture of ATB and FTG teeth and is better than general saw blades in cross-cutting, but it will not chip. Saw blades for cutting hard surface countertops or melamine-coated particleboard use a trapezoidal flat tooth (TCG) shape to prevent edge chipping.

Introduction to Power Tool Purchase Skills

 How to choose China Power Tools?

(1) First of all, according to your own needs, the difference is whether it is for home use or professional use. Generally, the difference between professional power tools and general household power tools is mainly in power. Professional power tools have higher power than general household power tools. The tool power is small, the input power is also small and compact, and the highly integrated electric tools are more convenient to use than the large and single-function products. Therefore, try to choose power tools that are rich in functions, small in size, simple in structure, and easy to store. When purchasing power tools, you need to buy power tools with clear packaging and no damage. Power tools that are purchased have a normal appearance, complete plastic parts, and no Obvious shadows and dents, no scratches or bumps, the relevant paint is smooth and beautiful, no defects, no oil and stains on the surface of the whole machine, the handle of the switch is flat, the length of the wire and cable is generally not less than 2M power tools. The relevant signs are clear and complete. , Parameters, manufacturers, certificates, etc. are all equipped with hand-held tools, turn on the power, frequently operate the switch to start the tool frequently, and observe whether the on-off function of the tool switch is reliable and whether it affects the TV/fluorescent lamp on site. Determine whether the tool is equipped with an anti-interference suppressor. The power tool is energized and run for 1 minute, feel the vibration, and observe whether the reversing spark and the air inlet are normal.

(2) Choose power tools with noise within the allowable range.

(3) Choose power tools that are easy to maintain and get accessories.

(4) When selecting power tools, pay attention to the power supply voltage used. Generally, hand-held power tools need to provide 22V city power as an energy drive. Do not connect to 380V industrial power, otherwise, the machine will be damaged.

China Power Tools

Power tools purchase skills

1. If you often drill holes in concrete walls, a two-kilogram electric hammer is your best choice. Due to the cylinder structure of the electric hammer, the hammering force is very high, and it has a hammering frequency of 1000 to 3000 per minute, which can generate significant force, making it easy for you to drill holes in the concrete wall. Equipped with an adapter rod and a chuck for an ordinary electric drill, it can also complete the function of a hand electric drill, achieving the purpose of one machine with multiple functions. It is a speed-adjustable electric hammer + adapter rod + 13mm electric drill chuck, only a few hundred yuan, coupled with a few commonly used drill bits, then most of the decoration tasks in your home can be completed by yourself.

2. If in addition to concrete drilling, you must also take into account the drilling of wood and metal, and the drilling of concrete is less than ten millimeters, you can consider the impact drill. The impact drill relies on the helical gear to generate impact, and the impact is not as good as the electric hammer.

3. If you often tighten or loosen screws, or punch holes in wooden or iron plates, then you can buy a cordless electric screwdriver, which is the most convenient tool in these two aspects. The rechargeable electric screwdriver plus a set of screwdriver headsets make it easy to get the job at hand.

4. Everyone knows that a hand electric drill is suitable for drilling holes on wood or iron plates, but don't expect it to be useful for drilling holes on concrete walls. It is easy to damage the machine. A hand electric drill is the most economical The electric tools, even if they are imported, only cost a few hundred yuan.

5. Jigsaw. If you have a strong hands-on ability and you can make some furniture or shapes by yourself, then you definitely need a jigsaw. Install a suitable saw blade, wood, iron, plastic, stainless steel, etc. soon. Process your ideal shape under your hand. You can choose various types of jigsaws to create your own shape.

We are china power tools exporter. If you are interested in our products, please feel free to contact us.

Development Trend of Garden Tools

China Garden Tools refers to the machinery and equipment involved in gardening, greening and subsequent maintenance, including lawn planting and maintenance machinery, greenfield planting and maintenance machinery, urban tree and shrub planting and maintenance machinery, and flower cultivation Facilities and equipment, garden engineering and professional sports venues and other equipment.

At present, the main consumption areas of the global garden tool market are concentrated in European and American countries, while the garden tool market in Asia is small in scale but develops rapidly.

North American Market

The North American market of garden tools is mainly concentrated in the US market. The United States is the world's largest consumer of garden tools, and its consumption mainly comes from home gardening and public greening. The U.S. economy is relatively developed, the ownership rate of private gardens is relatively high, and home gardens are maintained and operated frequently, such as pruning branches and tidying lawns, and there is a strong demand for garden tools, which drives the development of the garden tool market.

From 2014 to 2019, the US demand for lawn and garden equipment is expected to increase to US$11.7 billion at an average annual growth rate of 3.2%. With the increase in the number of single-family houses and garden facilities, the increase in household and commercial garden equipment has provided strong support for the growth of the garden tool industry.

European market

The European horticulture industry is an active and growing market, which is largely due to the development of European art. In recent years, gardening TV programs and major gardening exhibitions, such as the Chelsea Flower Show, have all contributed to the development of gardening.

China Garden Tools

1

Russian market

There are approximately 40 million acres of gardens in Russia, which means that every three Russians have their own courtyard. Since the Soviet era, Russian villas have been accompanied by a courtyard of about 600 square meters, and the head of the household will often grow some fruits and vegetables in the courtyard in warm seasons. Since 2005, Russia’s economic development has reduced the need for individuals to grow edible plants, and at the same time, it has also made people more interested in ornamental gardening, especially those who own high-end houses in cities.

It is estimated that by 2019, Russia's horticultural demand will reach 97 billion rubles. The cultivation of fruits and vegetables will keep customers in constant demand for garden tools, but customers will prefer more cost-effective tools. In Russia, the necessity of garden maintenance will continue to support the high demand for garden care products.

2

British market

According to the British, gardening is a traditional and popular hobby. People's strong interest in house reconstruction gradually extended to the garden, stimulating the development of the market.

In the past ten years, the British gardening market has maintained a good growth trend. The development of British society and the economy, the increase in disposable income, and the aging population are conducive to the development of its horticulture industry. In 2017, the transaction volume of the British gardening supplies distribution market reached 4.9 billion pounds, an increase of 3% over the previous year. British consumers spend up to 5 billion pounds on gardening each year. Although the demand for housing in the United Kingdom is still high, the rate of housing construction and moving activities have been declining in recent years, and the average size of British gardens is also shrinking. Therefore, people tend to choose high-rise residences with smaller spaces and "vertical gardens" are more popular. The use of flower pots that are easy to move and put on the balcony has increased.

3

German market

In Germany, the home and garden market is relatively mature, and new sales usually need to be driven by innovative and personalized products. With more and more people immigrating to Germany, the German population has gradually increased, and the number of families has continued to grow steadily. These favorable demographic factors have played a positive role in the growth of the home and garden market.

Asia market

The Asia-Pacific region will be the fastest-growing region in the global garden tools market, and China, Hong Kong, and India will have a higher compound growth rate. The Chinese market still maintains the largest market share in the Asia-Pacific region. Japan will continue to maintain its position as the second-largest market in the region, but the compound annual growth rate is expected to remain at a low level of 1.6%.

China is the main production base of garden tools in the world. The export market for garden tools has different demands. China Garden Tools Manufacturers need to formulate differentiated product plans based on the different economic and cultural needs of different countries and regions.

How to Choose a Saw Blade?

 China Circular Saw Blades supplier shares this article with you.

Saw blade diameter selection:

The diameter of the saw blade is related to the sawing equipment used and the thickness of the sawing workpiece. The diameter of the saw blade is small, and the cutting speed is relatively low; the large diameter of the saw blade has higher requirements on the saw blade and sawing equipment, and the cutting efficiency is also high. The outer diameter of the saw blade is selected according to different circular saw machine models, and the use of a saw blade with the same diameter can effectively improve efficiency and reduce production costs.

Selection of saw blade tooth number:

The number of teeth of a sawtooth, generally speaking, the more cutting edges are cut per unit time, the better the cutting performance. However, the number of teeth should not be too many, and a reasonable number of teeth should be selected according to the thickness of the material to be sawed. The sawing material is thick, the number of teeth is correspondingly small, the sawing material is thin, and the number of teeth is relatively large, but the saw teeth are too dense, and the chip volume between the teeth becomes smaller, causing jamming, which is easy to cause the saw blade to heat up; If the amount is not matched properly, the cutting amount of each tooth is small, which will increase the friction between the cutting edge and the workpiece and affect the service life of the cutting edge. Usually, the tooth spacing is about 15-25mm.

Circular Saw Blade

Selection of saw blade thickness:

The thickness of the circular saw blade theoretically we hope that the thinner the saw blade, the better, the sawing is actually a consumption. The material of the alloy saw blade base and the process of manufacturing the saw blade determine the thickness of the saw blade. If the thickness is too thin, the saw blade is easy to shake when working, which affects the cutting effect. When choosing the thickness of the saw blade, the stability of the saw blade and the material to be cut should be considered. The thickness required for some special-purpose materials is also specific, and a reasonable thickness should be selected according to the requirements of equipment and workpiece processing.

Can the circular saw blade be reversed when in use?

Can the circular saw blade be reversed when it is in use? Many saw blade users are very random about the installation direction of the saw blade. When the saw blade is disassembled and reinstalled, it does not pay attention to the forward and reverse rotation direction of the saw blade, which reduces the use of the saw blade. life.

Generally speaking, new saw blades without blades do not have forward and reverse directions, because the saw blade mainly depends on the blade to work later. However, the used saw blade should not be reversed as much as possible after unloading and reinstalling.

Because the saw blade is already out of the blade at this time, a regular extension line is dragged behind it to ensure the sharpness during use and also extend the service life of the saw blade.

Now there are some saw blades with sharpened edges on the market. These saw blades have a good appearance. Since the saw blades have been sharpened, it is better to install them in the specified direction during use. However, it is worth noting that this kind of edged saw blade is generally processed by a grinding wheel, and a certain amount has been lost during processing. Therefore, this saw blade improves the use efficiency and reduces the service life of the saw blade.

In short, in the general situation where there is no requirement for very precise cutting, it is a wise choice to choose a saw blade without a blade.