Sunny Tools Attended India Stona Fair 2014

STONA 2014 - 11th International Granites and Stone Fair - an exhibition showcasing the unique range of country’s colorful, eye-catching natural stones and a platform that helps in demonstrating the capabilities, capacity and the most modern and latest techniques in the craft of stone working.sunny diamond tools have finished 2014 stona Stone Fair successfully .hope we can meet each other at next fair.

Diamond drilling core bits key technologies for knowledge sharing

Diamond core bits are widely used in mining and drilling industry , and the staff conducting these drilling work, not only for the quality of these devices are required , you should know some drilling technology. Mastering the technique can effectively improve the efficiency of mining personnel. Ramada mining machinery manufacturers and content to share with you some tips on drilling .
 An efficient rock breaking technology : drilling a borehole in order to form a rock formation , and therefore, efficient rock breaking technology to improve drilling speed and shorten the construction cycle , the key to reducing the cost of drilling in deep and ultra deep wells and large displacement wells, due to the tripping time accounted for a growing proportion , with deep hardness and abrasive formations are also increasing, making efficient rock breaking technology in deep and ultra deep wells and large displacement is particularly urgent .

    Second, the well trajectory technology : Because of heterogeneity and anisotropy of the rock, drill drilling will be affected in the formation of ground forces . Irregular movement wellbore instability and increase the drillstring trajectory prediction difficult. Control theory is introduced into the wellbore trajectory and control, ground remote variable bending joints and adjustable stabilizer been developed . Rotary steerable drilling system .Third, carrying rock technology : the broken drill cuttings from the bottom to clear out in time to improve the penetration rate , the key to reducing drilling accidents. In highly deviated wells, due to the debris in the borehole gravity fall to the lower side , the impact of drilling activities in the column , increasing the friction torque of the drill string , but also easily lead to the underground complex situations .
 Fourth, wellbore stability technology : the formation is opened, it lost the original rock wall supporting force , if the wall rock intrinsic bond strength is weak, instability will collapse ; Some formations of shale formations easy drunk swelling collapse ; some formations such as salt formation prone to creep ; some rock formations such as salt can cause fluid performance deteriorates , resulting in downhole . Wellbore stability problems is an urgent need to solve the problem, which seriously hampered the development drilling .

2014 The 14th China Xiamen International Stone Fair

Sunny Tools have finished The 14th China Xiamen International Stone Fair successfully, and show a rang of diamond tools product.hope we can meet each other at next Xiamen International Stone Fair
Xiamen Stone Fair 2014-International Stone Fair and International Tools and Machinery Fair, considered one of the main global events for the stone and machinery segment, will be held on the same date of March 6-9, 2014.

 

Diamond tool selection and use common sense

Before selecting households and the use of diamond coated tools , you must understand the following knowledge about diamond tools :( 1) The difference between the CVD diamond coated with amorphous diamond coatingAmorphous diamond ( also called diamond-like carbon - Annotation ) is to adopt a carbon PVD coating deposition process . It has a key part of the diamond SP3 , SP2 also has a part of the carbon bond ; its high film hardness, but lower than the hardness of diamond films ; their thickness than we usually deposited diamond film to be thinner . When machining graphite, amorphous diamond coated tool life is 2-3 times uncoated carbide tools . In contrast , CVD diamond deposition process is the use of pure CVD diamond coating , tool life when machining graphite is 12-20 times carbide cutting tools , which can reduce the number of tool changes to improve the reliability and precision machining consistency.( 2 ) can not be processed hardened steel with a diamond cutterDiamond is composed of carbon atoms. When some of the material is heated , it will absorb the carbon atoms from the diamond and carbide formation in the workpiece . Iron is one such material . When the iron group with diamond tooling materials, heat generated by friction causes the diffusion of carbon atoms in diamond to iron , resulting in diamond coatings by chemical wear and premature failure .
( 3 ) heavy grinding and ( or ) heavy coating of diamond coated tools is difficult to guarantee the quality of the tool surface is generated due to the pure diamond coating , so using a diamond grinding wheel to re- tool takes a long time . Furthermore, the growth of the diamond tool used . Preparation of the surface will change the chemical properties of the tool , since this requires very precise chemistry control coating , thus the coating effect is difficult to re- tool guaranteed .( 4 ) diamond coated tool life variesLike any other tool , diamond-coated tool life also varies , depending on the material to be cut , the choice of feed rate and cutting speed , as well as the geometry of the workpiece and the like. Generally , diamond-coated graphite machining tool life is 10-20 times uncoated carbide tools and may even longer in some cases . Thus , a tool can be done with almost any processing tasks without tool change due to tool wear and avoid the processing of the interrupt and recalibration , making it possible to achieve unattended processing. In the processing of composite materials , it is entirely possible to get a longer tool life.According to reports, in the processing of high-density glass fiber, carbon fiber and other difficult Gl0-FR4 composite materials , diamond-coated tool life up to 70 times the uncoated carbide tools .( 5 ) diamond coating can prevent flaking coating flaking is a serious problem in the diamond tool , but also a common problem ( especially when machining carbon fiber -like material ) , will cause unpredictable tool life . The late 1990s , the chemical properties of the interface has been identified as an important factor affecting the performance of the diamond coating adhesion . By selecting good compatibility Carbide chemical properties , the use of appropriate pretreatment technology and reasonable deposition reaction conditions , it is possible to reduce or eliminate the diamond coating flaking , worn smooth and stable pattern . Under the microscope normal wear diamond coated tool , you can find a diamond is worn until a stable carbide substrate , and no chipping or peeling occurs .

Diamond Tools provides solutions

In recent months, Kaiserslautern , Germany, specialized composites manufacturer CirComp companies use HORN CVD diamond cutting tools, machining a variety of rotational symmetry class of composite material parts, such as : pipes, pillars , masts and high performance sliding bearings.
   Previous PCD is the preferred processing composite materials , but now , CVD tool in the processing of composite materials embodied class performance , far exceeding the PCD tools.
   Is a combination of a series of composite fiber and the substrate . From the microscopic point of view, cutting the fiber can be considered as a gap in the microsecond time changing the angle of the cutting intermittent cutting - vertical, horizontal , diagonal , each layer of fibers toward different.
   Horn latest CVD thick diamond blade , using a special production process, in the processing of composite fiber material is 5 to 6 times PCD tool life . The main reasons are : CVD diamond tools are made of 99.9% pure diamond, from the 20 m-25 m homogeneous crystals constitute ? ? . The PCD is a diamond and a binder consisting of a diamond content of 80% is slightly higher than the tool material .
   This means that the relative hardness of CVD diamond PCD, can have a very substantial increase, even slightly higher than the hardness of some natural diamonds . CVD tool performed using precision laser engraving cutting edge rounding , and provides 1 to 2 ? Edge sharpness of m. In the laser engraving process , a single crystal diamond is cut off , and the crystal does not occur when fragmentation is grinding . This means that the sharpness of the CVD diamond tool is more than 10 times PCD tools. You can also use laser engraving in a variety of chipbreakers CVD tool.
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Diamond composite tooling problems

When a diamond cutter composites ( eg CFRP and GFRP), often due to the multi-phase characteristics of the workpiece material , resulting in the processing status is unknown. Composite materials are typically comprised of a substrate and the substrate is strengthened glass fibers or carbon fibers. Based on different application environments , you can use a variety of highly resistant fibers. The choice of fiber depends on the needs of the end product .
   When cutting the fibers , the transverse and longitudinal fibers not interfere with each other , causing the serrated cutting edge of a workpiece is easy to produce , delamination and fiber damage. High impedance of the tool will result in a strong fiber abrasive wear , which requires the tool material with high hardness.
   Thermal stability of the composite cementitious material is not very good . Processing , composite materials and cutting diamond tools materials will react . Therefore , in order to avoid chemical damage of the workpiece , the cutting is usually to limit the cutting speed. A variety of standard machining composite materials has not yet worked out, such as surface quality of the workpiece quality standards , waste discharge machining based and so on.
   Difficult to process and its structural characteristics of multiphase composites , and so have a wide variety of needs in the processing tool material . If you need a very sharp cutting edges when cutting fiber , we can choose CVD diamond material or lined with PCD tools.
   However , the contour of the use of such material can be processed is limited, especially when the contour of the workpiece to be machined is very complex, difficult to achieve. In some cases, when you need chipbreakers must use carbide tools . To reduce serious carbide abrasive grains may occur in the processing of the composite wear may be appropriate to increase the hard diamond cutter diamond coating . However , an effective method of cutting the composite material which is not widely used solution .
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