composite drill rods using method

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  • US3295613A - Composite drill rod and method for

    US3295613A - Composite drill rod and method for making the same - Google Patents

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  • Composite drill pipe and method for forming same

    2012-10-16 · A lightweight and durable drill pipe string capable of short radius drilling formed using a composite pipe segment formed to include tapered wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self-aligning receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces and a set of …

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  • US8287005B2 - Composite drill pipe and method for

    A lightweight and durable drill pipe string capable of short radius drilling formed using a composite pipe segment formed to include tapered wall thickness ends that are each defined by opposed...

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  • CN2878651Y - Composite drill rod - Google Patents

    As depicted in figs. 1 and 2, a kind of compound drilling rod of the present utility model comprises: at least two joint drilling rods, the first segment drilling rod comprises: first segment bores the internal key 12 of tube 1 and first segment drilling rod, the internal key 12 of first segment drilling rod is welded on first segment and bores in the circumference of tube 1 downside, the second joint drilling rod comprises: …

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  • Optimization of Drilling Parameters of E- Glass

    2020-6-15 · The present study investigates the optimization of drilling parameters of GFRP composites Specimen using Taguchi Method. The optimization is carried out by using MINITAB 17 software. optimize the parameters namely cutting speed, feed rate and drill diameter to maximize the MRR and minimize the delamination damage in drilling of GFRP.

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  • Measuring residual stresses in composite materials

    2014-1-1 · By developing the simulated method in laminated composites, the simulated incremental hole-drilling (SIHD) process in laminated composite materials was performed. In this section, the residual stresses in the depth of laminated composites will be determined by using the calibration factors obtained from the SIHD process in the laminated composites.

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  • A deburring strategy in drilled hole of CFRP

    2017-5-5 · In this study, a deburring method using EDM process has been proposed for removal of the generated burrs during drilling of CFRP composite. Experimental results revealed that the generated burrs of the drilled hole were successfully removed by the proposed deburring method.

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  • Advancement of glued-in rods using polymer concrete as ...

    Glued-in rods are often used for overhauling damaged structures using EP or PU adhesives and a thin glueline to ensure a proper mechanical bond [2], [3], [4].

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  • DRILL ROD CHANGER, ROCK DRILLING UNIT AND

    2016-1-29 · composite GFRP. The drill point angle of 118° drill has less damage than the drill point angle of 135°, hence the quality of the drilled hole is better when using smaller drill point angle. Drilling of composite stacks is quite different from its individual plate. In mechanical structure the holes

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  • Optimization of Drilling Parameters of E- Glass

    2020-6-15 · The improvement of method parameters done by Taguchis S/N ratio analysis for delamination in drilling of GFRP composites. GFRP composite is fabricated using epoxy polymer Araldite LY556 matrix reinforced with twelve layers of glass fibers. The S/N ratio values are calculated by taking into thought with the help of package Minitab.

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  • Measuring residual stresses in composite materials

    2014-1-1 · The hole-drilling method is one of the most used techniques for measuring residual stresses in metallic components. The method was originally proposed by Matahr (1934) for the measurement of through-thickness uniform residual stresses in homogeneous isotropic materials. A thin plate of infinite length and width with a circular hole is shown in Fig. 4.2.

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  • composite drill rods equipment - oncocytoma.info

    China Composite Rods, Composite Rods . It is mainly used on oil and rock drills, rotary cutting bits, augers, drill pipes and stabilizers. Also for tools to remove drill rods in well-drilling. Specifications for Cemented Carbide Composite Rods: Cemented carbide composite rod is also calld YD welding rods, tungsten copper welding rods. Get Price

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  • CN2878651Y - Composite drill rod - Google Patents

    The utility model relates to a compound drilling rod which comprises n drilling tube segments, an inner key, an outer key and blocks, wherein the inner key is welded in the lower circle of each drilling tube segment, the outer key is welded on the whole length of the outer circle of each drilling tube segment, the blocks are welded on the ends of the drilling tube, drilling tube segment n is ...

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  • Residual Stress Measurement in Composite

    2018-6-4 · Current methods for incremental hole-drilling in composite laminates have not been successfully applied in laminates of arbitrary construction or where significant variation of residual stress exists within a single ply. This work presents a method to overcome these limitations. Series expansion is applied to each ply orientation separately so that the discontinuities in the residual stresses ...

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  • Experimental and computational analyses on

    2021-2-1 · In this research, the hole-drilling method with the obtained results of our previous research by the DIC method is used to measure the residual stresses on a composite plate. The results of the measured residual stress by using the DIC and the hole-drilling methods were compared considering the effect of elapsed time.

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  • Modeling of drilling process of GFRP composite

    2021-6-26 · The drill tool was fixed on a fixation system consisting of a chuck, collet nut, collet, O ring and sealing disc. The fixation system was held on the tool post of Matech MT-26 CNC turning machine, as shown in Figure 2. The drill was cooled using a coolant (AMCUT-200 water soluble cutting oil) pumped by submersible pump (0.04 MPa maximum pressures).

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  • Composite sandwich repair using through-thickness ...

    2020-9-15 · The drill used here for drilling holes on composite material was Dremel 200-N/15 0.9 Amp 2-Speed, which can be used to drill holes in carbon fiber composite laminates significantly below 1 mm within seconds. The robot’s end-effector was equipped with a Dremel drill fit into a housing, which was custom designed (Fig. 3b). The force controlled ...

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  • Best Carbide Rods Manufacturer In China Zhuzhou -

    Carbide rods is mainly used for drill, ... Using centrifugal casting method and new composite method such as continuous casting compound (CPC), injection deposition method (Osprey method), electroflag welding method, and heat-like, a forged steel or pneumo Cast iron, the outer layer of high-speed steel series composite rolls and metal-ceramic ...

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  • Best Carbide Rods Manufacturer In China Zhuzhou -

    Carbide rods is mainly used for drill, ... Using centrifugal casting method and new composite method such as continuous casting compound (CPC), injection deposition method (Osprey method), electroflag welding method, and heat-like, a forged steel or pneumo Cast iron, the outer layer of high-speed steel series composite rolls and metal-ceramic ...

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  • DRILL ROD CHANGER, ROCK DRILLING UNIT AND

    COMPOSITE METAL, CEMENTED CARBIDE BIT CONSTRUCTION: December, 2009: Stevens et al. 20100006282: ... 11. A method of changing drill rods in a rock drilling unit, the rock drilling unit comprising a feed beam, a rock drilling machine and at least one retainer device, the method comprising: connecting at least two drill rods together at a drilling ...

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  • COMPOSITE SANDWICH REPAIR USING THROUGH

    2020-12-18 · COMPOSITE SANDWICH REPAIR USING THROUGH-THICKNESS REINFORCEMENT WITH ROBOTIC HAND MICRO-DRILLING M. Suresh, A. Sanders, P. Prajapati, K.Kaipa, O. G. Kravchenko Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA Abstract The novel through-thickness reinforcement and repair method of composite sandwich structures

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  • MULTIPLE-PERFORMANCE OPTIMIZATION OF DRILLING

    2016-1-29 · composite GFRP. The drill point angle of 118° drill has less damage than the drill point angle of 135°, hence the quality of the drilled hole is better when using smaller drill point angle. Drilling of composite stacks is quite different from its individual plate. In mechanical structure the holes

    Get Price
  • GFRP Composites by Various Drill Angles

    2021-6-6 · analytical study of delamination damage and delamination-free drilling method of CFRP composite. Erturk et al. [20] studied the effects of cutting temperature and drilling param-eters (drill bits, feed rate, and spindle speed) on the delamination of GFRP composites.

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  • Preparation of antimicrobial polycaprolactone‐silica ...

    2011-1-28 · In this study, antimicrobial polycaprolactone composite films containing 12.5% silica and 0.15% silver nanorods were prepared using the roll-milling method. The destruction of E. coli and S. aureus on the surface of the composite films was evaluated after 6 hr of incubation at 37°C.

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  • US Patent for Well process using a composite rod

    Well process using a composite rod-stiffened pressurized cable Mar 15, 1990 - Conoco Inc. A wire line cable in which composite rods are spaced apart and axially disposed between a flexible, elongated, membrane which can be pressurized and a flexible outer protective sheath surrounding but …

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  • Use of composite rod-stiffened wireline cable for ...

    The composite rods used in the wireline cable may be made from a number of different materials. Preferred are uni-directional graphite fibers pultruded using a plastic binder such as vinyl ester, epoxy, or a thermoplastic or thermosetting resin. Composite rods formed in …

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  • Choice of carbon fiber composite manufacturing

    The choice of carbon fiber composite manufacturing method has been discussed in other articles and Mazumdar has described the manufacture of composite in details. Obviously, cost is a controlling factor and to compete against Al, the lowest cost form of carbon fiber must be used in conjunction with an automated high speed lay-up process. These criteria have been exemplified by Mils and co ...

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  • The Effect of Thrust Force in Drilling Composite

    Compared with conventional metal materials, composite materials can sustain more loads under lower weight and lower space, which is more suitable to use in high strength environment for structure parts application in aerospace, military, transportation and leisure. The enormous aeronautical components and structures of composite materials require assembly and machining.

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  • GFRP Composites by Various Drill Angles

    2021-6-6 · analytical study of delamination damage and delamination-free drilling method of CFRP composite. Erturk et al. [20] studied the effects of cutting temperature and drilling param-eters (drill bits, feed rate, and spindle speed) on the delamination of GFRP composites.

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  • Supply of natural gas equipment and tools

    Drill string 301 is composed of multiple drill rods, such as drill rod 302 within the drill rig 320. Drill rods generally have a coupling mechanism at each proximal and distal ends so that the rods …

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  • Method and Apparatus for Managing Rod Changes in ...

    Well process using a composite rod-stiffened pressurized cable Mar 15, 1990 - Conoco Inc. A wire line cable in which composite rods are spaced apart and axially disposed between a flexible, elongated, membrane which can be pressurized and a flexible outer protective sheath surrounding but …

    Get Price
  • US Patent for Well process using a composite rod

    The choice of carbon fiber composite manufacturing method has been discussed in other articles and Mazumdar has described the manufacture of composite in details. Obviously, cost is a controlling factor and to compete against Al, the lowest cost form of carbon fiber must be used in conjunction with an automated high speed lay-up process. These criteria have been exemplified by Mils and co ...

    Get Price
  • Choice of carbon fiber composite manufacturing

    2019-11-9 · Composite Machining Guide A34 www.kennametal.com Machining Guides • Composite Machining Guide Composite Machining For decades, the aircraft industry has utilized composite materials in multiple applications, including flight surfaces and some internal cabin parts. Unfortunately, these materials are unique to each design in their fiber ...

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  • Aerospace — Composite Machining Guide - Kennametal

    2)/hydroxyapatite (HAp) composite films were prepared on commercially pure titanium rods (2mm in diameter, 5mm in length) by anodic-cathodic pulse electrolysis in an aqueous solution consisting of 0.3mM Ca(H 2PO 4) 2 and 0.7mM CaCl 2 and pH ¼ 5:5. The electrolysis was carried out in an autoclave at 120 C for 30min. using þ8:7V vs. Ag/AgCl sat.

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  • Osteoinductivity of Titania/Hydroxyapatite Composite

    Method to Assemble Composite Panels . The first step in assembling the composite panels is using a drilling frame to drill channels in pre-cut insulation blocks smaller than the diameter of the connectors to insert the connectors stiff in such channels. The second …

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  • Method for concrete building system using composite

    Compared with conventional metal materials, composite materials can sustain more loads under lower weight and lower space, which is more suitable to use in high strength environment for structure parts application in aerospace, military, transportation and leisure. The enormous aeronautical components and structures of composite materials require assembly and machining.

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  • The Effect of Thrust Force in Drilling Composite

    When inspecting a composite panel using the ring test tapping method, a dull thud may indicate A. less than full strength curing of the matrix. B. separation of the laminates. C. an area of too much matrix between fiber layers.

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  • composite drill rods equipment - oncocytoma.info

    China Composite Rods, Composite Rods . It is mainly used on oil and rock drills, rotary cutting bits, augers, drill pipes and stabilizers. Also for tools to remove drill rods in well-drilling. Specifications for Cemented Carbide Composite Rods: Cemented carbide composite rod is also calld YD welding rods, tungsten copper welding rods. Get Price

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  • Preparation and characterization of biodegradable

    The method solves the problem of the nano-sized particle aggregation in polymer m … Preparation and characterization of biodegradable chitosan/hydroxyapatite nanocomposite rods via in situ hybridization: a potential material as internal fixation of bone fracture ... The mechanical properties of the composite were evaluated by using bending ...

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  • Multi response optimization of machining

    2007-3-10 · Multi response optimization of machining parameters of drilling Al/SiC metal matrix composite using grey relational analysis in the Taguchi method. A. Noorul Haq 1, P. Marimuthu 2 & R. Jeyapaul 1 The International Journal of Advanced Manufacturing Technology volume 37, pages 250–255 (2008)Cite this article

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  • The Effect of Thrust Force in Drilling Composite

    Compared with conventional metal materials, composite materials can sustain more loads under lower weight and lower space, which is more suitable to use in high strength environment for structure parts application in aerospace, military, transportation and leisure. The enormous aeronautical components and structures of composite materials require assembly and machining.

    Get Price
  • E21B 17 - Drilling rods or pipes; Flexible drill strings ...

    2015-3-11 · US4691791 Knurled drill stem : 09/08/1987: US4691787 Earth auger : 09/08/1987: US4691430 Method and means for sealing electrical conductor rods in a tubular housing : 09/02/1987: CN86100426A Earth ...

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  • Predicting the Elastic Properties of 3D N-Directional ...

    2019-3-15 · The microstructure of 3D n-directional braided composites is established in this study. A theoretical method that considers 3D braided composites as assemblages of unidirectional composites is proposed to predict their elastic properties. A comparison of the predicted stiffness with experimental results showed their good agreement. The relationship between braiding parameters, including the ...

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  • Water Dowsing - USGS

    2021-7-12 · Method # 2. Rotary Drilling: For rotary drilling, hollow drill rods of steel or aluminium are used. These are thread- connected and transmit torque and feed pressure to the drilling bit or drilling tool which is attached at the end of a column of the drill rods. Rotation of the drill rods is through gearing driven by a prime mover at the surface.

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  • Types of Drilling Methods used in Mining | Boring |

    2021-7-10 · Visual inspection cannot find internal flaws in the composite, such as delaminations, disbonds, and matrix crazing. More sophisticated NDI techniques are needed to detect these types of defects. tap testing is the common technique used for the detection of delamination and/or disbond. tap testing method, automated tap test is similar to the manual tap test. Ultrasonic inspection use to detect ...

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