How to choose saw blade? Saw blade classification and material?

A saw blade is a generic term for a thin, circular cutting tool used to cut solid material. Saw blade can be divided into: diamond saw blade for stone cutting; HSS saw blades for cutting metal materials (not inlaid with carbide tips); Used for cutting hard alloy saw blades of solid wood, furniture, man-made board, aluminum alloy, aluminum profile, radiator, plastic, plastic steel, etc. The following small series for you to introduce how to choose a saw blade? Saw blade classification and material?

How to choose saw blade?

(a) selection of cemented carbide types commonly used types of cemented carbide tungsten cobalt (code YG), tungsten titanium (code YT). Tungsten-cobalt cemented carbides are widely used in wood processing industry because of their good impact resistance. The commonly used model in lumber processing is YG8-YG15, the figure behind YG expresses the percentage of cobalt content, cobalt content increases, the alloy fights impact toughness and bends strength to rise somewhat, but hardness and wear resistance drop somewhat however, want to try to choose according to actual situation.

(2) Selection of matrix

Elastic and plastic, material economy, heat treatment hardenability is good, its heating temperature is low, easy deformation can be used for cutting requirements not high saw blade.

The carbon tool steel contains high carbon thermal conductivity, but the hardness and wear resistance of 200℃-250℃ temperature drops sharply, heat treatment deformation, poor hardenability, long tempering time easy to crack. Manufacturing economic materials for cutting tools such as T8A, T10A, T12A, etc.

Compared with carbon tool steel, alloy tool steel has good heat resistance, wear resistance and processing performance. The heat resistance deformation temperature is between 300℃ and 400℃, which is suitable for manufacturing high-grade alloy circular saw blades.

The high-speed tool steel has good hardenability, hardness and rigidity strong, less heat resistance deformation, is ultra high strength steel, thermoplastic stability suitable for the manufacture of high-grade ultra-thin saw blades.

The diameter of the saw blade is related to the sawing equipment and the thickness of the workpiece. Saw blade diameter is small, cutting speed is relatively low; Saw blade diameter is high for the saw blade and saw cutting equipment requirements, and saw cutting efficiency is also high. The outer diameter of the saw blade is consistent with the diameter of the saw blade according to different circular saw machine models.

The diameter of standard parts is: 110MM (4 inch), 150MM (6 inch), 180MM (7 inch), 200MM (8 inch), 230MM (9 inch), 250MM (10 inch), 300MM (12 inch), 350MM (14 inch), 400MM (16 inch), 450MM (18 inch), 500MM (20 inch), etc. The bottom slot saw blade of precision cutting board saw is designed for 120MM.

(4) the number of teeth selection teeth, generally speaking, the more teeth, the more cutting edge per unit time, the better the cutting performance, but the number of cutting teeth more need to use hard alloy quantity, the price of the saw blade is high, but the sawtooth is too dense, the chip tolerance between the teeth becomes small, easy to cause the saw blade fever; In addition, too many saw teeth, when the feed is not properly matched, the cutting amount of each tooth is very small, will intensify the friction between the edge and the workpiece, affecting the service life of the blade. Usually the tooth spacing in 15-25mm, should choose a reasonable number of teeth according to the sawing material.

(five) thickness of the choice of the thickness of the saw blade theoretically we hope the thinner the better, saw seam is actually a consumption. The thickness of the alloy saw blade is determined by the material of the alloy saw blade and the process of making 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 saw blade, the stability of saw blade and the material of saw should be considered. Some special purpose materials require a specific thickness, should be used according to equipment requirements, such as slotted saw blades, scribing saw blades, etc..

(6) the selection of tooth shape commonly used tooth shape has left and right tooth (alternate tooth), flat tooth, ladder flat tooth (high and low tooth), inverted trapezoid tooth (inverted conical tooth), swallow tail tooth (hump tooth), and rare industrial grade three left and one right, left and right flat tooth.

The use of the left and right teeth is the most extensive, cutting speed is fast, grinding is relatively simple. Suitable for cutting and cross sawing all kinds of soft and hard solid wood profiles and density board, multilayer board, particleboard, etc. The left and right teeth with anti-rebound protection teeth are dovetail teeth, which are suitable for longitudinal cutting various boards with tree joints; The left and right tooth saw blade with negative front Angle is usually used for panel sawing because of its sharp edge and good sawing quality.

⒉ Flat tooth saw mouth is rough, cutting speed is slow, grinding is the most simple. It is mainly used for ordinary wood sawing with low cost. It is mostly used for aluminum saw blades with small diameter to reduce adhesion during cutting, or for slotting saw blades to keep groove bottom flat.

The ladder flat teeth is a combination of trapezoidal teeth and flat teeth, grinding is more complex, cutting can reduce the veneer crack phenomenon, suitable for all kinds of single and double veneer wood-based panels, fire board sawing. In order to prevent adhesion, aluminum saw blades with more teeth are also used.

It is often used to cut the plate saw bottom slot saw blade. When sawing the wood-based board with double veneer, the slot saw adjusts the thickness to finish the bottom slot processing, and then completes the plate sawing processing by the main saw, in order to prevent the phenomenon of edge collapse.

5. The sample picture of tooth shape is as follows:

(1) left and right tooth shape alternate tooth

(2) Flat teeth of ladder

(3) Dovetail tooth anti-rebound dovetail tooth

(4) flat tooth, inverted ladder tooth other tooth shape

5. Oblique teeth, left and right middle teeth

To sum up, saw solid wood, particleboard, dense board should be selected around teeth, can be sharp wood fiber tissue cut off, smooth incision; In order to keep the bottom of the groove flat slot, flat tooth shape or left and right flat combination teeth; Sawing stick panel, fire board generally choose ladder flat teeth, computer cutting saw due to saw cutting rate, alloy saw blade diameter and thickness are relatively large, the diameter of about 350-450mm, thickness between 4.0-4.8mm, most of the ladder flat teeth, to reduce edge collapse, saw marks.

(7) The selection of sawtooth Angle The Angle parameters of the sawtooth part are more complex and the most professional, and the correct selection of the Angle parameters of the saw blade is the key to determine the sawing quality. The main Angle parameters are front Angle, back Angle and wedge Angle.

The front Angle mainly affects the force consumed by the sawdust. The bigger the front Angle, the better the cutting sharpness of the saw, the lighter the saw cutting, and the less effort the pushing material. Generally processed material material is soft, choose a larger front Angle, on the contrary, choose a smaller front Angle.

The Angle of the saw tooth is the position of the saw tooth when cutting. The Angle of sawtooth affects the cutting performance. The most significant effects on cutting are anterior Angle γ, posterior Angle α and wedge Angle β. Front Angle γ is the cutting Angle of the saw tooth, the greater the front Angle of the cutting is lighter, the front Angle is generally between 10-15℃. The back Angle is the included Angle between the saw tooth and the processed surface. Its function is to prevent the friction between the saw tooth and the processed surface. The larger the back Angle is, the smaller the friction is, and the processed products are more smooth and clean. The back Angle of carbide saw blade is generally 15℃. Wedge angles are derived from front and rear angles. But the wedge Angle can not be too small, it plays a role in maintaining the strength, heat dissipation and durability of the teeth. The sum of anterior Angle γ, posterior Angle α and wedge Angle β is equal to 90℃.

(8) The selection of aperture aperture is a relatively simple parameter, mainly according to the requirements of the equipment to choose, but in order to maintain the stability of the saw blade, more than 250MM saw blade had better choose larger aperture equipment. At present, the aperture of the standard parts of the domestic design, 120MM and the following diameter is more than 20MM hole, 120-230mm is 25.4mm hole, more than 250 is 30 aperture, some imported equipment also has 15.875mm hole, multi-slice saw mechanical aperture is relatively complex, more with keyway to ensure stability. No matter the size of the aperture, can be modified by a lathe or a line cutting machine, the lathe can be set in a large aperture washer, line cutting machine can reaming for equipment requirements.

A series of parameters such as type of alloy cutter head, material of matrix, diameter, number of teeth, thickness, tooth shape, Angle and aperture are combined into the whole of hard alloy saw blade. Only by reasonable selection and collocation can its advantages be better played.

Saw blade classification and material?

The material

HSS saw blade, solid carbide saw blade, tungsten steel saw blade, insert alloy saw blade, diamond saw blade, etc.

applications

Milling saw blade, machine saw blade, manual saw blade, metal saw blade (aluminum saw blade, copper saw blade, stainless steel saw blade, etc.), pipe saw blade, wood saw blade, stone saw blade, cutting acrylic saw blade, etc.

The surface coating

White hacksaw blade (natural color), nitride saw blade (black), titanium plated saw blade (gold), chromium nitride (color), etc.

other

Cutting saw blade, cutting saw blade, slot saw blade, cut saw blade, integral saw blade, insert saw blade, ultra-thin saw blade

The shape of

01 Morse Band saw blade

High quality band saw blade, can be used with any industrial band saw machine, can be used for mass production.

02 Morse Reciprocating saw blade

A variety of choices, can cut metal, wood, composite materials, nailed wood, plastic, rubber, etc.

Morse curved saw blade

It is divided into bimetal narrow saw, high-speed steel narrow saw, carbon steel narrow saw, tungsten carbide sand narrow saw, cutting range is very wide.

04 Morse Portable and stationary band saw

We supply high quality band saw blades to professional contractors.

05 Morse Hand saw blade

Including bimetal hand saw blade, HSS hand saw blade, carbon steel hand saw blade, tungsten carbide sand hand saw blade.

06 Morse abrasive

Including resin cutting grinding wheel, cutting saw, grinding wheel, emery cloth wheel, etc., available with high speed portable saw machine.

07 Morse hole saw

Including the need to configure shaft and do not need to configure shaft hole saw, also divided into deep cutting type hole saw, tungsten carbide hole saw, tungsten carbide sand hole saw, flat drill and grading drill.