The metal sintered centerless grinding wheel

Metal bonded grinding products with high efficiency, Good self-sharpening wheel, allowance, strong grip on the abrasive ability, wear resistance and other characteristics.

Products Introduction

Features: Metal bonded grinding products with high efficiency, Good self-sharpening wheel, allowance, strong grip on the abrasive ability, wear resistance and other characteristics.

The main target: Processing of optical glass, crystal, glass, precious stones, agate, sapphire and other materials.

Productions of sintered metal wheel products are: sintered centerless grinding wheel, cylindrical grinding wheel, grinding wheel periphery, bronze cutting, sintered bronze disc ,etc.

Juchuang Abrasive offers a variety of bronze bonded grinding wheel.

Diameter range: φ10-500mm, Thickness Of Wheel: 0.5-400mm, Grit size: 30/35-w3.5, offer the special wheels as customer’s requirements.

Different ceramic grinding wheels with different hardness

Different ceramic grinding wheels have different hardness, so we use to choose the right wheel. If the ceramic wheel wear too fast, specific instructions for processing rolls chosen ceramic wheel too soft, you can take the following improvements:

Ceramic wheel increase line speed, improve carriage longitudinal feed rate per revolution of the workpiece pallet namely longitudinal feed of the grinding wheel to the width of the 2 / 3-3 / 4; reduce the roll speed. If these measures have not yet achieved significant grinding effect, indicating pottery wheel too soft, does not apply, should choose a little hard ceramic grinding wheel.

If the grinding roller midnight, pottery wheel was blocked or dirty difficult, not falling sand passivated, wheel adhesiveness debris grinding roller surface burn appeared, galling, then the selection wheel too hard, you can take the following measures to improve. Reduce the ceramic wheel speed and improve the speed of the rollers.

Resin grinding wheel processing

Wheel is one of the grinding apparatus is widely used, a wide variety of grinding wheel, grinding wheel different role is not the same, here we want to introduce resin grinding wheel application, take a look at it!
(1) with a resin grinding wheel or on cylindrical grinding machines Universal grinding machines for cylindrical surfaces, conical surfaces and the shoulder end of shaft, sleeve and other types of parts were grinding.
(2) with the end face of the outer circumferential surface of the resin wheel or wheel, such as wheel bolt, large pores wheel, wheel slot, the use of cup-shaped grinding wheel, cylindrical grinding wheel end surface porous and porous wheel grooved wheel, and the like, a variety of mechanical parts straight to meet the flatness, the mutual positional accuracy between the surface roughness and plane and other requirements to perform plane grinding.
(3) with the outer surface of the resin or resin grinding wheel, including grinder, universal grinder or on a dedicated grinder, high quality requirements for surface through holes in the blind hole, stepped hole, tapered bore and bearing channel and other components for internal grinding process.
(4) The resin wheel, resin and rubber guide wheels in centerless grinding machine, using flexible positioning mode, use the wheel outer circumferential surface of the inner circle or outer surface of rotationally symmetric centerless grinding.
(5) with a special resin grinding wheel screw wheel. On the thread grinder, high precision and surface roughness transmission thread, thread measuring parts, tools and hardened screw threaded portion of the threaded processing. Such as threads, worm, tap, hob, gauges and other grinding with tapered thread, long thread, parallel threads and the like.
(6) with an epoxy resin honing wheel and double cone, butterfly, Shuangdie type, worm grinding wheel, the gear grinding machine for through hardened gears Gear grinding.
(7) with a strong resin grinding wheel, the grinding tool, having high hardness hot hardness, wear resistance and sufficient strength and toughness of the cutting tool materials, such as carbon tool steel, alloy tool steel, high speed steel , carbide, etc., were grinding tools, in order to achieve the desired accuracy, surface roughness and correct geometry, so that the cutter blade with high sharpness and durability.

The important role of binding agent in the manufacture of grinding wheel

Binding agents may be attached to the abrasive wheel using a variety of materials, and the nature of the type of binding agent directly affects the grinding wheel hardness, strength. Since the grinding wheel grinding carried out in high-speed rotation, and is in high temperature, high pressure, high impact loads as well as under conditions of strong corrosive fluid cutting work, so the strength of a solid abrasive paste, binder itself heat, corrosion resistance , has become an important requirement for binding agents.

Commonly used grinding wheel bond the following three:

Inorganic binder, commonly used ceramics.

Organic binding agent, commonly used resin and rubber.

Metal binding agent for part of the diamond and boron nitride grinding wheels.

For example vitrified, with its bonded grinding wheel, its stable physical and chemical properties, the gap more, can better maintain the geometry of the grinding wheel, cold, hot, dry, wet adaptation, and are not afraid water, oil, acids, alkalis, the price is cheap, so widely used. But the use of vitrified bonded grinding wheel brittle texture, lack of flexibility, can not withstand the impact of large and twisted side pressure, not manufacturing thin grinding wheel peripheral speed of the grinding wheel is generally only 35m / s or less. Each binder has the advantages of its use, the user has the choice of targeted, in order to play a role in a full range of applications.

History of Grinding Wheel

Everything is step by step developed from the wheel is no exception, and the wheel is how it evolved? I do not know, right? I do not know to look down with me! Mastered the history of the grinding wheel, the wheel for the purchase and application are beneficial.

As early as the Neolithic Age, humans had already started to use natural millstone processing knives, axes, bone, horn, and tools such as a tooth; a long time ago, humans have found a natural abrasive and clay combination firing ceramic wheel; 1900, the advent of artificial abrasives, using artificial abrasive wheel manufacturing all kinds have been produced to create the conditions for the rapid development of grinding and grinding machines. Thereafter, the abrasive grinding wheel gradually increase the proportion.

At present a lot of production of metal products in the world, therefore, belongs to the hardware industry category wheel naturally played a crucial role in strengthening the wheel of production process innovation, improve production technology, product innovation capability of enterprises to open restricted and enterprise technology level "bottleneck" in a timely manner the new grinding wheel used in existing equipment business, extending its technical life, enhance its effectiveness in the production source to ensure product quality.

As in recent years, China's rapid economic development, technological innovation of the wheel has been strengthened in the future it will become China Abrasives category accounted for the largest product category, and because of the unique advantages in the grinding wheel industry chain late, great to promote the application of the polishing wheel in. According to the analysis, to 2015, China will surpass France as the world's largest abrasives market, initial estimates, our products will occupy abrasives Abrasives world demand for additional products 3/5, as abrasives and grinding wheels one of the major product categories, is also facing a good development situation.

Saw cutting Grinding wheel Somatic

Effect wheel caused by unqualified

Wheel failure may have a variety, we also know some, and some we did not know, today we come to know the contents of some of the failed wheel, such as hardness failed, face runout, radial runout failed, and apertures substandard, let's take a closer look at it!

      1) Hardness failed

      Wheel hardness refers to the binding agent from the abrasive wheel surface resistance from the resistance in the external force, or the degree of difficulty understanding the abrasive wheel surface detachment. Hardness can more accurately reflect the performance of the grinding wheel, the wheel is an important indicator of quality. Wheel hardness of the assessment there are two requirements:

      Uniformity of hardness (hardness measured value of each point difference between maximum and minimum value) to comply with the provisions of the standard;) meet the hardness requirement that the arithmetic mean of the average value of hardness (hardness measured at each measuring point value ) to allow standard within the range. The proportion of unqualified hardness is quite high, such as flat-shaped grinding wheel hardness failed in more than 20% of its total failure.

      2) face runout, radial runout failed

      Face runout, radial runout failure would affect the balance and produce yaw performance, adverse impact on the machine tool and the workpiece when the wheel rotates, it should be controlled within the allowable range.

      3) failed aperture

      Wheel bore is to install the base, the aperture wheel failed as a "heavy flawed" in the standard. Large aperture, the eccentric wheel to generate after installation, so that the grinding wheel imbalance will increase high-speed rotational vibration, affecting the quality of grinding, grinding wheels and even lead to rupture, damage to the equipment. Pore ​​size is too small, not installed on the wheel can not be used, if forced to install, then scratch the spindle, the wheel can also make a dark wound, causes a rupture running wheel, easily lead to accidents. Aperture failed in the case of checks of the most serious. 16.7% of the total failure of the flat-shaped grinding wheel, wheel-shaped cymbals accounted for 58.2% of the total failure.