139 results about "Bond quality" patented technology

Method for evaluating cement quality in a cased well. A density log of the well is obtained using, for example, a GammaRay sources and detectors (51). The detector count rates are inverted to provide initial estimates of cement density and thickness (53). Acoustic waveform data are obtained from the well using an acoustic logging tool (52). The acoustic data are inverted (54-56), using the initial estimates of cement density and thickness obtained from the density logs, and an updated density log is inferred. Cement images are obtained from the updated density log, and cement bond quality can be estimated (57).

The invention provides a device and a method for real simulation of underground environments, completeness maintaining of experiment equipment, and accurate and omnibearing evaluation of completeness of a cement sheath. The device mainly comprises an upper end cap, a lower end cap, an outer pipe, a middle pipe, the cement sheath, a sleeve pipe, a long source distance sector cement bond logging instrument (SBT (segmented bond tool)) and a high-temperature and high-pressure kettle. The method comprises the following steps of utilizing the high-temperature and high-pressure kettle to simulate the stratum temperature pressure of the curing and forming of the cement sheath; loading and unloading an inner annulus and an outer annulus, so as to simulate the actions of change of well shaft pressure and stratum pressure on the cement sheath under the actual working condition; utilizing a transmitting probe and a receiving probe of the SBT to continuously transmit and receive acoustic wave signals, and performing the omnibearing and high-resolution compensation type attenuation rate measurement, so as to obtain the bonding qualities of a first interface and a second interface of the cement sheath of the well cementing cement sheath under the actual stratum environment, and the amounts, sizes and bearings of cracks and channeling in the cement sheath. The device and the method have the advantage that the underground environment can be really simulated in the omnibearing way, so as to accurately and efficiently evaluate the completeness of the well cementing cement sheath, provide the new method and basis for indoor cement slurry evaluation systems and sites to take the targeted measures, and improve the well cementing quality.

A method of forming a sputtering target assembly is described that involves explosively bonding a target grade plate and a backing plate member to form a bonded preform having dimensions such that a large target or several target assemblies can be obtained. The method includes optionally partitioning the bonded preform into a plurality of sputtering target assemblies. An interlayer can optionally be disposed between the target grade plate and the backing plate member before bonding. A bond quality test sample can be produced by the method. The sputtering target assemblies, the bonded preform, and the bond quality test sample are further described.

The invention relates to an ultrasonic testing method for bonding quality of a coated steel sheet and rubber. The method comprises the following steps: conducting horizontal progressive scanning testing through a CTS-23 type pulse reflecting type ultrasonic tester, and by taking that the echo amplitude at the tenth horizontal grid on the display screen of the ultrasonic tester reaches or exceeds the longitudinal scale by 10% as benchmark, judging the bonding quality between the steel sheet with a resin coating and rubber according to the wave change on the screen of the ultrasonic tester; when no echo height exists at the tenth horizontal grid of the display screen of the ultrasonic tester or the echo height is lower than the longitudinal scale by 10%, judging the bonding between the steel sheet at the scanned position and the interface of the rubber to be good; and when the echo height at the tenth horizontal grid of the display screen reaches or exceeds the longitudinal scale by 10%, judging debonding, namely the steel sheet at the scanned position and the interface of the rubber are bonded badly. According to the method, the determination on the good bonding and debonding of an insulating layer can be realized through echo amplitude, and precise quantification can be conducted to the debonding area.

The invention relates to a light-weight reinforced gypsum plaster board and a preparation method thereof. The light-weight reinforced gypsum plaster board is prepared from the following raw materials in parts by weight: 100 parts of a gypsum clinker, 0.1-1 part of modified starch, 0.01-0.1 part of a foaming agent, 2-10 parts of rice straw fiber powder, 0.1-0.6 part of CMC (carboxyl methy cellulose) powder and 50-100 parts of water. By adding the rice straw fiber powder and the CMC powder, the workability of slurry is improved, the problems of low grade and low strength of desulfurization gypsum are solved, and particularly the rice straw fiber powder has an adsorption effect on Cl, so that the wetting bond quality of the gypsum plaster board is greatly improved; meanwhile, the consumption of the desulfurization gypsum and the foaming agent is reduced, and the strength and bond performance of the board are improved; the prepared gypsum plaster board is good in wetting bond performance, the mass per unit area of a 9.5mm waterproof board is 6.4kg/m<2> which is far superior to a national standard requirement that the mass per unit area is not less than 9.5kg/m<2>; and the average value of the transverse breaking load is 216.5N, the minimum value of the transverse breaking load is 202.6, the average value of the longitudinal breaking load is 448.0N, the minimum value of the longitudinal breaking load is 423.8N, and the strength is far higher than a national standard requirement.

The invention discloses an integral one-step molding technique of a wind power blade. The integral one-step molding technique is characterized in that the blade is molded by two steps, and one part of a molding blade of a lower die is used for die combination with the balance of molding part of an upper die so as to form the whole wind power blade. The integral one-step molding technique of the wind power blade has the advantages that an integral molding composite material blade shell has continuous glass fiber at the joint of an upper shell and a lower shell, thus greatly improving the whole performance of the blade; the blade shell is a closed structure, thus having higher bearing capability; therefore, the integral one-step molding technique can lighten the weight of a main beam of a main bearing part, and simultaneously and thoroughly eliminate the failure possibility of the blade caused by bonding quality.

The invention discloses a large wind force blade. The blade is mainly solidified and molded by a reinforcing material dipped with resin. The blade is characterized in that the process comprises the following steps: firstly, manufacturing a lower blade shell; setting a core mould in the lower blade shell; then placing an upper blade shell reinforcing material on the core mould; and finally compounding the mould, and dipping the resin on the reinforcing material in an upper blade mould to form the complete blade. The reinforcing materials of the upper blade shell and the lower blade shell are a whole body; and the edge reinforcing material of the upper blade shell is obtained by firstly reserving usage amount when the lower blade shell is manufactured to make the whole reinforcing material of the blade shells continuous. The large wind force blade has the advantages that the wind force blade is integrally molded, and glass fiber on a joint of the upper blade shell and the lower blade shell is continuous so as to greatly improve the overall performance of the blade; the blade shells have a closed structure and have higher bearing capacity so as to reduce the weight of the blade shells and thoroughly eliminate the portability of blade failure caused by bonding quality at the same time.

The invention discloses a method for ultrasonic detection of the bonding quality of thin-walled metal and a non-metal material, wherein an ultrasonic instrument is adopted for detection. The method comprises the steps of: firstly, making a comparative sample, and calibrating the sensitivity of the ultrasonic instrument according to a debonding defect testing hole in the comparative sample; then performing defect position testing on a product: detecting the bonding quality of the thin-waled metal and the non-metal material by adopting the calibrated ultrasonic instrument, placing an output port of a longitudinal wave probe of the ultrasonic instrument on an outer metal surface of the material product, and performing 100% scanning on a bonding face by adopting a moving scanning manner; and if the height of multiple pulse echoes of longitudinal waves at cells 6 to 10 of a horizontal baseline on a oscillography screen of the instrument is found to reach or exceed initial sensitivity during moving scanning, judging that a part below the probe has a debonding defect position or an adverse bonding defect, and if a height envelope curve of the multiple pulse echoes of the longitudinal waves at cells 6 to 10 of the horizontal baseline on the oscillography screen is lower than 50% and gradually decreases to 20% or no reflected waves exist, judging that the bonding quality is intact.

The invention discloses a preparation method of a paper-surface gypsum board. The method comprises the following steps: after being metered, gypsum clinker and PGCS are fully mixed, and then the mixture enters a mixer; paper pulp, mixing cement and foam respectively enter the mixer; the above dry and wet materials are fully stirred in the mixer to prepare uniform slurry, the slurry is continuously poured between two layers of covering paper, and a wet gypsum board is prepared by extrusion molding; and the wet gypsum board undergoes solidification, cutting, drying, final trimming, edge banding, stacking and packaging so as to prepare the paper-surface gypsum board finished product. According to the invention, bonding quality and strength of the board are enhanced; raw materials can be saved, energy consumption is reduced, and production cost is decreased; and dependence of bonding quality of the covering paper on operation and drying system is reduced. The scheme of drying the paper-surface gypsum board by the use of waste heat from a power plant or a steel mill is feasible. Energy conservation and emission reduction as well as automatic disposal of industrial waste residues are realized. In addition, the aggregate resources conservation purpose of ''low energy, low pollution and high return'' is achieved.

The invention is a method for manufacturing a metal composite plate for the use of a cutting tool, which belongs to the technology field of manufacturing the metal composite plate. The invention comprises following procedures: the surface of base plate blank and flyer plate blank that is to be recombined is cleaned and activated; the primary fixation of dot welding is adopted and the method of compressor air exhausting is adopted for assembling; hot rolling; thermal treatment and acid washing and edge cutting. The invention can make use of an existing plate and a slab band mill and adopt direct hot rolling to manufacture the metal composite plate with good quality. The mechanical property, the corrosion resistance and the bond quality of the composite plate satisfy or even precede national standards. Compared with the prior art, the invention has the advantages of simple technology, high output and good bond quality.

The invention relates to the field of semiconductor fabrication, in particular to a metal bonding method of a three-dimensional chip structure and a bonding structure. The method comprises that copper of a top chip is processed in a chemical machinery planarization mode, a silicon nitride layer is deposited on the surface after being processed in a chemical machinery planarization mode, the silicon nitride layer attached to the copper of the top chip is etched, a groove is formed, the bottom of the groove is the copper of the top chip, copper of a bottom chip is processed in a chemical machinery planarization mode, a bottom silica layer is etched, the copper is enabled to be protruded, activating treatment is carried out to the surface after etch of the copper of the bottom chip is achieved, the copper of the top chip and the copper of the bottom chip are aligned and bonded, and annealing treatment is carried out to the chips after being bonded. According to the metal bonding method of the three-dimensional chip structure and the bonding structure, silicon oxide and silicon nitride are used for being matched with metal and metal bonding, bonding quality is enabled to be better, a silicon nitride layer thin layer can prevent the metal from diffusing into around materials, and goals that a technology process is simplified, temperature needed by bonding is reduced, bonding reliability is improved, bonding efficiency is improved, and bonding cost is reduced can be achieved.

A method for quality control during ultrasonic bonding, in which a transducer bonding tool unit and an ultrasonic generator are used and in which, during the bonding, one or more sensors are used to sense measurement signals for one or more parameters, which can vary during the bonding, for assessing the bond quality and/or for influencing the bonding, and which proposes that, during the bonding, at least one speed profile measurement signal representing the time/speed profile of the tip of the ultrasonic tool in the direction of oscillation thereof be sensed. The invention also relates to a bonding apparatus which is suitable for carrying out the method. Furthermore, the invention relates to other quality control methods for ultrasonic bonding and to bonding apparatuses which are suitable for carrying out these methods.

Disclosed is method of enhancing bond quality in an ultrasonic consolidation process using a sonotrode having a power output level. The preferred embodiment includes the steps of inputting a plurality of process parameters associated with a localized geometry over which the ultrasonic consolidation is occurring, and varying the relationship between these parameters to control the power output level to optimize bond quality between layers of material as they are consolidated. The process parameters, alone or in combination, may include the speed of the consolidation; the amplitude of the ultrasonic energy; applied force; and/or temperature.

The invention relates to a method for evaluating cement bond quality of two interfaces of a cased well. In one embodiment, the method includes the steps that an ultrasonic transmitting device and an ultrasonic receiving device are arranged circumferentially in a spaced mode in the horizontal direction and placed in the cased well; the ultrasonic transmitting device transmits ultrasonic waves to the inner wall of the cased well at the incidence angle theta i, the ultrasonic waves are stimulated in the cased well to form a circumferential mode, various layers of media in the cased well reflect the ultrasonic waves to form reflected waves, and the incidence angle theta i is the included angle between the central axis and the normal at the intersection point of the central axis of the radiant surface of the ultrasonic transmitting device and the inner wall of the cased well; the ultrasonic receiving device receives echo signals, the echo signals are compared with echo signals received in a free casing pipe mode, and the cement bond quality corresponding to the forming position of the echo signals in the cased well is obtained. The directional ultrasonic waves are transmitted, the ultrasonic waves are stimulated in the cased well to form the circumferential mode, echo information is processed, and therefore bond states of different interfaces of well cementation cement can be detected.

The invention provides a method for improving the vulcanization bonding strength of a natural rubber elastic element and a metal reinforcing element of a flexible joint. The method for improving the vulcanization bonding strength of the natural rubber elastic element and the metal reinforcing element of the flexible joint includes the following steps: 1, shearing the natural rubber elastic element and the metal reinforcing element into set shapes according to the structural requirements of a designed flexible joint; 2, performing sand blasting treatment on the double surfaces of the metal reinforcing element; 3, cleaning the metal reinforcing element by acetone for 2-3 times, and drying after cleaning; 4, coating a certain amount of Chemlok CH-205 adhesive to the surface to be bonded of the metal reinforcing element; 5, then coating a certain amount of Chemlok CH-220 adhesive to the surface to be bonded of the metal reinforcing element; 6, bonding the metal reinforcing element with the natural rubber elastic element at intervals; and 7, at last putting the compound of the natural rubber elastic element and the metal reinforcing element into a vulcanizing machine for vulcanizing. In testing, the flexible joint bonded according to the method provided by the invention is high in bonding strength, and stable and reliable in bonding quality; the method can be applied to similar products in which natural rubber and metal parts are subjected to vulcanization bonding.

The invention discloses an acoustic system structure of an acoustic velocity-segmented cement bond logging tool and a logging method. The acoustic system consists of a transmitting probe, a segmented receiving probe 18 feet away from the transmitting probe, five receiving probes and a temperature probe, wherein the five receiving probes are 3 to 5 inches away from the transmitting probe respectively, and are distributed at an equal interval. In the logging method used for cement bond logging, an acoustic amplitude cement bond logging (CBL) signal and a variable density logging (VDL) signal are detected; the segmented receiving probe 18 feet away from the transmitting probe is arranged, and consists of N radial probes, and each probe covers a radial 360/N-degree range of the circumference of a sleeve; and a real-time temperature curve in a well is detected by the temperature probe to accurately evaluate bond quality. The acoustic system structure and the logging method have the advantages that: high-resolution acoustic velocity logging and segmented cement bond logging are integrated so as to overcome the shortcomings of the conventional product, increase the utilization rate of the logging tool and reduce the production operation cost.

Aiming at the problem existing in casting a large-scale steel ingot or alloy steel ingot in the prior art, the invention provides a bidirectional cooling dynamic casting composite ingot casting method and device. The method comprises the following steps: preparing a raw material and core blanks, assembling a casting mould and the core blanks, arranging a mould, discharging air in a mould cavity, rotating the core blanks, casting metal melt and cooling a cast ingot. The invention also provides the device adopting the method. A plurality of blocks as low-temperature core blanks of a stirrer are prearranged in the casting mould, the cast ingot is forcibly cooled in internal and external directions to enhance control to a temperature field during the solidification process of the metal melt, cast melt and the melted core blanks form supercooled melt, and the supercooled melt internally contains a large amount of crystal nucleus and semisolid mass points; and the core blanks are rotated to clean the surfaces of the core blanks, so that the core liquid interface bond quality can be improved, the nucleation rate is increased, the texture is refined, loosening and pore defects are alleviated, solute distribution is more uniform, and the large-scale alloy steel ingots with refined internal textures and various tonnages are obtained.

The invention relates to CRTS II slab-type ballastless track mortar bonding quality detection equipment. The CRTS II slab-type ballastless track mortar bonding quality detection equipment comprises amain machine and a detection vehicle; the main machine comprises a central processing unit, an ultrasonic emission control module, an ultrasonic receiving processing module, and a network communication module; the detection vehicle comprises a detection vehicle bottom plate, a detection vehicle left side plate, a detection vehicle right side plate, a wheel-type speedometer, a track wheel assembly,two hydraulic rods, two supports, and a plurality of high frequency focusing ultrasonic transmit-receive sensor sets. The CRTS II slab-type ballastless track mortar bonding quality detection equipment is capable of solving a technical problem in the prior art that relatively large limitation is caused by detection on mortar layer open joint and disengagement using tools such as feeler gauges andsteel rulers.

A tester for evaluating pullout load capacity and bond quality of anchor bolts embedded in concrete includes a Schmidt hammer for measuring a rebound number and an ultrasonic pulse velocity tester for measuring the transit time of a pulse transmitted through concrete surrounding an anchor bolt. The rebound number and the transit time are combined and matched against a database record which identifies the pullout load capacity and the bond quality. The transit time is matched to thresholds of transit times associated with porosity, internal cracking, air voids, and water pockets located around the embedded anchor bolt. The Schmidt hammer is further modified by the incorporation of a digital level for measuring the vertical and horizontal angles of inclination of the plunger with the concrete surface, a guide tube for supporting the plunger, and by using a convex plunger tip for improved registration with anchor bolt head.

The invention discloses a construction method for bonding a lightweight concrete board wall. Wallboards are bonded to form the board wall in a jointed mode by the fact that elastic binders are arranged on bonding base faces of the wallboards, and therefore the construction method which allows constructing operations to be easy and convenient and is good in bonding quality among the wallboards is achieved. The board wall formed by jointing is good in sound insulation performance, crack-resisting performance, anti-permeability performance and waterproof performance. Further provided are the elastic binders and the wallboards, wherein the elastic binders are used for bonding the lightweight concrete board wall and the jointed gap bonding base faces of the wallboards are in plane shapes. According to the construction method and the elastic binders for bonding the lightweight concrete board wall, and the wallboards, and due to the fact that the wallboards are connected through the elastic binders, the quality of bonding among the wallboards in the board wall is ensured, the sound insulation performance, anti-seismic performance, the crack-resisting performance, the anti-permeability performance and the waterproof performance of the board wall are obviously improved, mutual bonding of the wallboards is plane-to-plane jointing bonding, therefore, manufacturing, storage, transport, installation and construction of the wallboards are benefited, and the board wall in a geometrical shape can be constructed by the wallboards.

The invention provides a composite board segmented explosive-distribution blast method. According to large-area composite board explosive welding, explosives are distributed in different segments at different detonation velocities; blast loads at all points of a shroud board are controlled to be basically kept within a certain range; the situation that big wave combinations containing gaps, cavities and other defects are generated due to metal melting as a result of an excessively high detonation velocity is avoided; consequently, the speed of collision between a base board and the shroud board is controlled, the overall bonding strength and deformation of a composite board can be changed quite beneficially, the problem of tearing of the shroud board in the explosive welding process can be solved quite beneficially, the bonding strength and the edge bonding quality of the composite board are improved, and the ideal goal that the whole interface of the composite board is in a tiny wave bonding mode is achieved.

The invention relates to the technical field of an edge bonding machine, and discloses a preheating device for a tape of an edge bonding machine. The preheating device comprises an edge bonding machine body in which an insulating cavity, a heating device and a blowing device are arranged, wherein the heating device is arranged between the blowing device and the insulating cavity, the insulating cavity is provided with a tape inlet and a tape outlet. The preheating device provided by the invention is simple in structure and convenient to use; furthermore, the tape can be preheated by combining the heating functions of a plate of an existing edge bonding machine, the bonding strength between the plate and the tape can be strengthened, the sealing tape can be glued firmly, and the edge bonding quality of products can be improved.

Various downhole logging tools and methods of using and making the same are disclosed. In one aspect a method evaluating cement bond quality in a well is provided. In a well with a particular casing/tubing configuration, waveforms of acoustic energy returning from the tubing and the casing with the tubing present are recorded. A frequency spectrum from the recorded waveforms is determined. Amplitudes of the returning acoustic energy at one or more preselected frequency(s) of interest of a range of frequencies at which the amplitudes are noticeably affected by cement bond quality for the particular casing/tubing configuration are determined. The determined amplitudes are compared with one or more baseline amplitudes to look for indications of cement bond quality. Other aspects involve time domain analysis.

The invention discloses a surface treatment method of a piston inlaid ring. The method comprises the steps that a sand-blasting machine is used to uniformly jet sand to the surface of the inlaid ring at a high speed, so that contaminants on the surface of the inlaid ring and in the inside deep grooves are completely removed until the surface of the inlaid ring is scrubbed and the roughness is uniform; and the working pressure of the sand-blasting machine ranges from 2 MPa to 10 MPa, sand blasting lasts for 2 min to 6 min, and the particle size of the sand ranges from 30 meshes to 320 meshes. Compared with the prior art, the piston inlaid ring is subjected to the sand-blasting treatment, on one hand, the corrosion on the surface of the inlaid ring can be removed, simultaneously the ring surface texture treated by the sand-blasting is meticulous compared with shot blasting treatment, so that the metallurgical bonding is facilitated, the bond quality of the ferro-aluminum combining area is improved, meanwhile the ultrasonic flaw detection is not affected, and the treatment cost is lower.

The invention relates to a constant-force pressing device for organic glass bonding. The constant-force pressing device is composed of a constant-force clamp and an installing pincer. The constant-force clamp is composed of two supports arranged up and down, the middles of the two supports are connected through a rotating shaft, a sleeve is arranged at the end of one support, a pin shaft penetrates through an inner cavity of the sleeve, the two ends of the pin shaft are movably connected with the corresponding supports, a spring is coaxially arranged on the sleeve, one end of the spring is limited on the surface of one support through a washer, and the other end of the spring is limited on the surface of the other support through a washer; the outer ends of the two supports are jointly connected with the installing pincer, and the installing pincer and the spring are located at the same-side ends of the supports. The constant-force pressing device is stable in pressure and stable and reliable in bonding quality; by means of the bonding method, operation efficiency is improved, and product quality is improved.

A single critically damped acoustic stack yields a wide frequency range as an acoustic transmitter or as an acoustic transducer having particular use in well integrity determination. The critically damped present acoustic stack utilizes a plurality of stacked acoustic elements such as piezoelectric ceramics that are energized in two manners, providing different center frequencies; each producing a respective center frequency of 100% bandwidth to yield an acoustic stack having a total bandwidth exceeding the bandwidth of an acoustic element or the bandwidth of the plurality of acoustic elements. One manner of energizing is to pulse only one of the acoustic elements. The other manner is to pulse a first acoustic element the pulse a second acoustic element after a delay equal to the amount of time it takes for the first pulse to reach the face of the second acoustic element. The acoustic elements are bonded together and onto a critically damped backing of tungsten. The assembly is retained in a housing that is preferably made of PEEK. The acoustic stack is primarily used in pulse-echo analysis of metal casing wall thickness and cement bond quality detection of wells.

The invention relates to a curve peeling fixture and a braided bearing gasket curve bonding quality testing method and a system thereof. The testing method includes steps of cutting an outer ring of a self-lubricated oscillating bearing to be tested into peeling samples with radian smaller than 180 degrees; peeling a braided gasket from the outer rings of the peeling samples of the oscillating bearings at a designed speed in an peeling angle larger than 100 degrees, and recording data value of peeling force varying along with the peeling length during peeling; drawing a curve diagram of peeling of the braided gasket of the oscillating bearing according to the obtained data, calculating the peeling strength according to the curve diagram, and then calculating the coefficient of deviation degree, wherein fluctuation extent of the peeling curve is higher along with increase of the coefficient of the deviation degree, while the stability of bonding quality within the peeling length is poorer; conversely, the stability of bonding quality within the peeling length is higher. The operability of the bonding quality testing method is improved fundamentally, and bonding quality of curves of the braided gasket of the self-lubricated oscillating bearing can be tested quantitatively and accurately.