648results about How to "Avoid quality defects" patented technology

The invention relates to a manufacturing method of thin strip continuously cast and cold rolled non-oriented electrical steel, comprising the following steps: smelting molten steel the temperature and components of which meet the requirements, casting the molten steel into a molten bath formed by a pair of water-cooling crystallizing rolls rotating at high speed, then cooling for the second time, hot rolling, cooling for the third time, coiling, cooling to room temperature, pickling, cold rolling, and finally annealing to obtain the cold rolled non-oriented silicon steel sheet with high magnetic induction and low iron loss. In the invention, the thin strip continuous casting process can eliminate the hot rolling thinning procedure in the traditional process, thus avoiding quality defect caused by the improper hot rolling process, simultaneously reducing the equipment loss, and reducing the maintenance and overhaul costs of equipment; the solidification process is controlled to improve the medium axialite proportion of the casting strip, thus improving the corrugation defect of the product in the cold rolling process; and the range of components of the non-oriented silicon steel smelting is widened by the characteristic of quick solidification of the continuously cast thin strip, and the smelting cost is lowered. The invention has the advantages of short process flow, low energy consumption, high efficiency, low production cost, simple manufacturing method and obvious energy saving and consumption reducing effects.

An elastic thread supply device including a tension controller configured to control the stress acting upon an elastic thread drawn from an elastic thread package, and a drive roll configured to supply the elastic thread dispensed from the tension controller to a processing line. The drive roll operates at a supply velocity slower than a conveyance velocity of a web, and increases or decreases the supply velocity depending on the fluctuation in the conveyance velocity.

The invention relates to a manufacturing process method for integrated formation of a horizontal shaft segmented wind power blade and an integrated device applicable to the method. The wind power blade at least comprises two segments of composite material blade segments. A metal bolt sleeve is embedded into the connecting part of the two adjacent segments during manufacturing, and integrated formation is realized by a positive pressure auxiliary vacuum perfusion mode, so the defects of the traditional perfusion process are overcome, and the manufacturing problem of the segmented blade is solved. In addition, the integrated formation process avoids various disadvantages and risks caused by that the traditional process shell adopts adhesive to adhere.

The invention discloses a one-step preparation method of stranding composite yarn of fully drawn yarn/pre-oriented yarn and a device thereof. The method includes that an FDY filament device is adopted to haul part tow on the back of a spinning box to two clod godet rollers to obtain POY yarn. The left tow is hauled to two hot godet rollers to obtain FDY yarn. The two tows are winded with a speed of 2800-3200m/min after being networked through a network device to obtain multi-strands of stranding composite yarn of fully drawn yarn/pre-oriented yarn. The device is to add two cold godet rollers on the filament device. The network device and a winding device are arranged to the back of the cold godet rollers and two hot godet rollers. The invention shortens the production process, reduces theequipment occupying space, lowers the consumption of the production cost, raw materials and energies and effectively solves the technical problem of finishing the spinning and the stranding in one step. The whole process is stable. The product quality is reliable. The quality defect that monofilament in yarn is easy to appear in a composite yarn product can be completely eliminated. The yield is three times of that of the prior art. And the production efficiency can be improved greatly.

The invention relates to a method for controlling the steel slab gap in a heating furnace. The method comprises the steps of steel stroke control, steel vacancy control and furnace map position track, wherein a formula that A=A1+A2-A3-A4 is adopted in the steel vacancy control step; A is a distance from a next steel slab to the tail of a fixed beam, and is in mm; A1 is a distance between the last slab on the fixed beam and the tail of the fixed beam, and is in mm; A2 is a step pitch of a stepping beam, and is in mm; A3 is a slab gap and is in mm; and A4 is a slab width. The slab spacing in the slag heating furnace is dynamically adjusted and tracked through the steel stroke control, the steel vacancy control and the furnace map position track according to the method for controlling the steel slab gap in the heating furnace of the invention, so slab surface quality defects caused by the slab gap are reduced. The heating non-uniformity generation frequency of bonding steel and the slabs is substantially reduced, the slab heating quality is ensured, and the production efficiency is improved.

The invention relates to a manufacturing technique of a tank body of a cylindrical shell section sloping bottom tank car, comprising three steps of rolling cylindrical shell section cones, fitting up the cylindrical shell section cones and forming the tank body. The invention has reasonable step design; and the manufactured tank body of the sloping bottom tank is completely consistent with the design requirements, thus fundamentally eliminating the quality defect of the sloping bottom tank body caused by the technique method and greatly improving the welding quality; and the invention is applicable to the production of various cylindrical shell section sloping bottom tank cars and can be produced on scale.

The invention relates to a sheet billet continuous casting and rolling production line and mainly solves the technical problems of high rigidity and low surface quality of produced sheet billets of the prior production line. The invention adopts a technical scheme that: the sheet billet continuous casting and rolling production line is sequentially provided with the following production line equipment: a continuous casting machine, swinging shears, a roller-hearth tunnel furnace, a descaling unit, a vertical roll, a rough mill, a coil box, a ultrafast water-cooling device, flying shears, a finishing mill, a laminar flow-cooling and ultrafast water-cooling device and a coiling machine, wherein a secondary descaling unit can be arranged between the flying shears and the finishing mill; and the continuous casting machine adopts two double flow roller-hearth tunnel heating furnaces, combines two flows of the two continuous casting machines into one flow through a transverse moving machineand is connected with a rolling line. The invention is mainly used for continuous casting and rolling of sheet billets.

The invention discloses a six-drop individual section bottle-making machine and pressing and blowing production technology thereof, belongs to the field of bottle-making machines, in particular to a multi-drop bottle-making machine and bottle-making technology thereof. The bottle-making machine comprises a frame, a parison mold molding mechanism, a molding mold molding mechanism and a bottle poking mechanism, and is characterized in that: a molding device of the parison mold molding mechanism is an integral multi-cavity stamping device which comprises a driving cylinder, a combined cylinder, a punch, a piston push-pull plate and a piston, wherein the piston is connected with the piston push-pull plate; six punches are arranged at the upper end of the piston push-pull plate; mold switching devices of the parison mold molding mechanism and the molding mold molding mechanism adopt a parallel switching mode in a horizontal plane; the bottle poking mechanism is driven by two stepping motors; and the two stepping motors drive a rotating disc and bottle poking arms of the bottle poking mechanism through a synchronous belt. The technology comprises six steps of separating materials, producing parison, turning, molding, clamping bottles and poking the bottles. The bottle-making machine has the advantages of high bottle-making yield, good molding quality and capacity of manufacturing high-grade glass bottles in multiple specifications.

The invention relates to a board balance reconditioning chamber and a method for reconditioning boards. The inside of the board balance reconditioning chamber is provided with a dehumidifier, a humidifier and temperature control equipment, and the middle part of the board balance reconditioning chamber is provided with an air flow guide device. The method for reconditioning boards comprises the following steps: 1) piling boards in the board balance reconditioning chamber; 2) adjusting the temperature and humidity of the board balance reconditioning chamber and determining the board processing time according to the preset water content range of the boards to balance the water content of all parts of the boards and to release the inner stress of the boards in a constant temperature and humidity environment; and 3) determining the water content of the boards and completing the reconditioning treatment when the water content of the boards reaches a preset value. The invention provides the constant temperature and humidity environment with flowing air to balance the water content of all parts of the boards, to release the inner stress of the wood fibers and to reduce the drawbacks of wood floors such as deformation and bending, thereby improving the percentage of cut-turn and the stability of the quality of the wood floors.

The invention relates to installation project construction of a vaporization-cooling chimney of a large converter, in particular to ground assembling and welding integral installation and construction technology for the vaporization-cooling chimney. The technology comprises the following steps: laying a steel platform and making a chimney support by using steel plates; transporting a cooling chimney to an installation site by using a large-tonnage flat truck; assembling the cooling chimney by using a large-tonnage crane; performing all-position ground welding on the vaporization-cooling chimney by adopting argon tungsten arc welding; performing 25 percent of radiographic detection and a corresponding airtight test on the welded chimney according to construction specifications; hoisting the chimney integrally; and fixing chimney system equipment according to the following sequence: curved chimney, cooling chimney and movable chimney so as to complete the installation of the chimney. The technology ensures the welding quality of the vaporization-cooling chimney, reduces the workload of overhead construction, reduces potential safety hazard during the construction, greatly improves the working efficiency of the installation of the vaporization-cooling chimney, reduces the duration of the construction, and increases the service life of the vaporization-cooling chimney.

The invention provides a submerged arc-welding flux recovering device, comprising a wind suction hopper which provides negative pressure for the flux recovery and a storage material hopper which is used for storing flux; the wind suction hopper is internally provided with a wind sucker; the submerged arc-welding flux recovering device is characterized in that a magnetic-selection separation material hopper is arranged between the wind suction hopper and the storage material hopper; the magnetic-selection separation material hopper is respectively communicated with the storage material hopper and the wind suction mouth of the wind suction hopper; the wind suction hopper, the magnetic-selection separation material hopper and the storage material hopper are integrated into a whole; the magnetic-selection separation material hopper is connected with a flux recovery pipeline; the storage material hopper is provided with a heating device; the flux recovered by the submerged arc-welding flux recovering device contains no iron chippings or vapor; when the recovered flux is re-used for welding, the gained surface of the submerged arc-welding seam is smooth and level and generates no air bubbles, and quality defects existing when the submerged arc-welding flux recovering device is carried out by the recovered flux in the prior art can be effectively solved; the wind suction hopper, the magnetic-selection separation material hopper and the storage material hopper are integrated into a whole, thus occupying few areas, thereby reducing the manufacture cost and being small and practical.

The invention provides a fluoropolymer processing aid. The fluoropolymer processing aid is particles which are formed by a core part and a shell part and have average particle diameter of 0.2 to 1 micron, wherein the core part is made of fluorocarbon polymer, the shell part is made of MQ silicon resin, the ratio of M to Q is 0.5 to 0.9, and the weight ratio of the core part to the shell part is 20:80-45:55. The invention also provides a silane cross-linked polyethylene composition containing the processing aid and application of the fluoropolymer processing aid in silane cross-linked polyethylene extrusion molding. Not only the silane cross-linked polyethylene added with the fluoropolymer processing aid has high extrusion velocity, but also the extruded product has high surface finishment.

The invention discloses an outside reinforcing, vacuum filling and heat curing molding process on the front edge and back edge of a blade. The process comprises the following steps of: firstly laying glass fiber cloth at reinforcing parts on the front edge and back edge of the blade, and then performing vacuum filling and heating curing molding. By performing vacuum filling for outside reinforcement of the front edge and back edge of the blade, the quality defects of reinforcement layering, bubbles, adhesive fillets and the like on the front edge and back edge of the blade can be greatly reduced, and the reliability of the blade is improved; and simultaneously, the curing of resin can be accelerated by curing after heating, and the production efficiency is improved.

The invention relates to the energy-saving lamp full automatic-assembly assembly line. It belongs to the energy-saving lamp manufacture equipment technology area. Its characteristic lies in that the rack intermediate deck coordinate installs the work piece conveying appliance by the transmission chain drive, the one output end of the decelerator which installs on the sublayer of the rack and connects the motor driver connects the dynamic major axis which coordinates the cam major axis driver, another output through the cam dismember coordinates to the work piece conveying appliance, above the work piece conveying appliance fit establishes automatic compression moulding equipment, automatic soldering lamp base equipment, automatic dial nail equipment, compression moulding cam, soldering lamp base cam, dial nail cam which installs on the cam major axis separately connects the automatic compression moulding equipment, automatic soldering lamp base equipment, automatic dial nail equipment. The line flow has rational design, the automation pattern substitutes manual work, reduces the suggestion factor of the quality flaw, enormously raises the production efficiency and the product quality, creates the scale effect, take a foundation for promoting the enterprise brand image.

The invention discloses a method for processing persimmon cake, which leads hot-air drying and microwave drying and sterilizing to be combined and applied to the processing production of the persimmon cake, wherein the hot-air drying is performed by the following step: a plastic plate loaded with mashed fruit is placed in a hot-air dryer and is kept for 5-8h at a heating temperature of 65-75 DEG C so as to lead the water content of the material to be lowered at 30-35 percent; the microwave drying and sterilizing is performed by the following step: the plastic plate loaded with the mashed fruit is placed in a microwave drying sterilization machine and is kept for 5-8min at a heating temperature of 60-65 DEG C so as to lead the water content of the material to be lowered at 20-25 percent and play a role of sterilization. The technical scheme overcomes the shortcomings of the prior method for drying the persimmon cake and the quality defect of the product, effectively lightens the damage of the drying process to nutrient content in the persimmon cake, optimizes the processing procedure, greatly shortens the processing time, is beneficial to lower the energy consumption and the production cost, and improves the efficiency.

The invention discloses a method and a system to control quality in a cold rolling system capable of preventing frequent chatter masks and hot cracks in the continuous cold rolling process. Meanwhile, the distortion and cutting of steel plates due to the roughness difference between the upper and lower surfaces of steel plates is also prevented. More specifically, the invention discloses a system and a method for detecting the quality abnormality in a cold rolling system, wherein a vibration sensor, a torque sensor, a temperature sensor and a current sensor are arranged inside a rolling mill. The information measured by the above sensors are used for detecting signals which cause defects, which are also used for minimize the defect ratio of the steel plates being rolled.

A method based on the computer visualization technique for classifying the quality of pork by its color includes such steps as preparing the standard color map according to the color space recommended by CIE, taking the pork specimen, and comparing it with said standard color map to determine its quality.

The invention discloses a form quality dynamical identification and modification control method in machining process. The form quality dynamical identification and modification control method in the machining process comprises the steps of (1) quality information real-time tracking, (2) form quality dynamic identification and (3) unusual form modification control, wherein the quality information real-time tracking is used for meeting the requirement that a large amount of bottom-layer data can reflect a present quality state of a workpiece form in the process of dynamic identification and modification, the form quality dynamic identification is used for carrying out data processing on acquired form quality information to acquire a dynamical quality product form, searching a form which is matched with the dynamical quality product form through an ergodic process form set and determining a belonging form type of the dynamical quality product form through similarity analysis, and the unusual form modification control is used for adopting a modification strategy ' deciding+choosing+calling' mechanism, dynamically carrying out modification control on a process exception form through a motion control unit and a motion executing mechanism. By the adoption of the form quality dynamical identification and modification control method in the machining process, the improvement of machining quality is benefited, the defects of quality is overcome in advance, quality cost is reduced, the improvement of production efficiency is benefited, off-line detection is avoided, sub-quality products can be machined again, and the economic benefit of an enterprise is improved.

The invention discloses a centrifugal cast Cr12MoV shape steel straightening roll and a production technology thereof. A centrifugal layer of a roll ring comprises a work layer and an inner layer and is cast through two times of centrifugal casting in an interval mode. The material of the work layer is Cr12MoV. The material of the inner layer is graphitic steel. The production technology comprises the steps that molten steel is subjected to the processing procedures of component design, stokehold molten steel treatment, spraying of cold type coating, smelting, centrifugal pouring, pit heat preservation, hot box opening and heat treatment, and the Cr12MoV shape steel straightening roll is obtained. According to the centrifugal cast Cr12MoV shape steel straightening roll and the production technology thereof, the problems that the roll face of a forged straightening roll axially cracks and loses efficacy in the using process are solved. The centrifugal cast Cr12MoV shape steel straightening roll has the characteristics of being high in abrasion resistance and long in service life, and the manufacture cost of the straightening roll is reduced.

The invention discloses a precast wall casing structure of a reinforced concrete superposed shear wall and a splicing method thereof. The precast wall casing structure of the reinforced concrete superposed shear wall comprises a reinforced concrete precast wall casing, a bump gap of the precast wall casing, a wall hollow cavity, rebars of the bump gap of the precast wall casing, a rebar bracket, an additional constructional rebar and a thermal insulation layer. The invention further discloses a splicing constriction method of the precast wall casings. With the precast wall casing structure of the reinforced concrete superposed shear wall and the splicing method of the precast wall casing structure provided by the invention, the horizontal joint junction of the reinforced concrete superposed shear wall is remarkably improved and therefore the integrity, the bearing capacity and the earthquake resistant behaviour of the junction joint of the reinforced concrete superposed shear wall are enhanced. The invention realizes that the reinforced concrete superposed shear wall is equal to a common entire cast-in-site shear wall, and can produce higher social and economic benefits.

The invention relates to a control method for online predication of a surface crack of a continuous casting sheet billet. The online predication of the surface crack is carried out by building a temperature detection system on thermocouples on the wall surface of a crystallizer and comparatively analyzing the temperature change conditions in different positions in the heat transfer direction, so that the predication accuracy is high, the surface crack of the continuous casting sheet billet and the specific location of the surface crack are accurately predicted, and the control method is used for guiding on-site production to reduce the quality defects and improve the quality of the continuous casting sheet billet.

The invention discloses a special-shaped deep-cavity hot-forging precision coupler knuckle die comprising an upper die and a lower die. Templates of the upper die and the lower die are both cuboids and flexibly connected, cavities of the upper die and the lower die are in the same shape and size, the cavities and a coupler knuckle are of the same shape, and the cavities are positioned at the centers of the templates. Each cavity is formed by enclosing of a plurality of circular arc sections and linear sections so as to form the shape of the coupler knuckle. The invention further discloses a processing method of the die. The processing method includes the specific steps of (1) forging, (2) planer milling, (3) drilling, (4) numeric control milling, (5) heat treatment, (6) finish milling, (7) polishing to remove burrs and sharp corners, and (8) assembling, die assembly, debugging, packaging and acceptance inspection. The die substitutes for an original casting die and a casting process, quality defects of existing coupler knuckle castings are overcome, and accordingly production efficiency and overall performance of processed coupler knuckles are improved.