30results about How to "Bite smoothly" patented technology

The invention discloses a magnesium/aluminum/titanium composite board cladding-rolling method. According to the method, a cladding layer is used for the composite board during rolling, and through shape optimization of upper and lower cover plates of the cladding layer and design of rolling process parameters, the cladding layer and the cladded composite board can achieve coordinated deformation during rolling, so that the deformation behavior of the cladded composite board can be effectively restrained, the composite interface of the composite board is straight, and the bonding strength of the composite board is improved; the cladding layer can effectively reduce invasion of impurities and harmful gas to the composite interface, so that the bonding strength of the composite board can be further improved; and meanwhile, the use of the cladding layer can slow down loss of heat, so that metal is easy to deform during rolling.

The invention relates to a control method for stable coiling of the head of hot-rolled high-strength steel. The method includes the following steps that head drying is performed on the strip steel in the laminar cooling process; a control system sets steel head tracking distance values; the control system sets the first waiting position of a first assistant coiling roll and the second waiting position of a second assistant coiling roll; the first assistant coiling roll, the second assistant coiling roll and a third assistant coiling roll conduct stepping according to the steel head tracking distance values; and in the pre-expansion process of a central spindle, the control system controls the central spindle to expand to a pre-expansion diameter value ranging from 745 mm to 750 mm from an initial diameter value. By means of the control method, it can be guaranteed that the head of the high-strength steel enters a coiling machine stably and smoothly, the situation that the head is abutted or rubs against relevant equipment, and consequently the steel strip halts is avoided, and therefore the steel heaping accident is avoided.

The invention relates to a roller of a three-roller planetary rolling mill. The roller (1) is basically in a conical shape. The invention is characterized in that the roller (1) is divided into five regions from the tail part to the head part, and the five regions are sequentially a material inlet region (S), a deformation region (S1), a process region (S2), a sizing region (S3) and a material outlet region (S4), annular concavo-convex lines (12) are uniformly distributed in the radial direction on the conical surface of the roller (1) in the deformation region (S1) at intervals, and in addition, inclined lines (11) formed by the axial projection of the concavo-convex lines (12) are sinusoidal curves. Compared with the prior art, the invention has the advantages that the smooth feeding and continuous stable and efficient rolling of rolling element blanks can be ensured in the rolling process, in addition, the influence of the rolling element surface quality caused by the severe vibration of the blank deformation can be avoided, the thread pitch of the rolled pipe materials in actual operation is uniform and stable, and the service life of the roller is greatly prolonged.

The invention discloses a hat shape steel rolling method and hat shape steel. The technological process of rolling comprises the steps of heating, high-pressure water descaling, cogging rough rolling,reciprocating type continuous rolling, cooling and straightening. A rolling hole pattern comprises a wavy flat arc-shaped pre-segmentation hole, an M-shaped n-type segmentation hole, an n-type finishrolling hole and a hot rolling finished product hole, arc-shaped sections are arranged in the middles of the n-type finish rolling hole and the hot rolling finished product hole, upper leg parts andlower leg parts are symmetrically arranged at the two ends of each arc-shaped section, and the upper ends of the upper leg parts and one ends of the arc-shaped sections intersect to form included angles; the lower leg parts are arranged at the lower ends of the sides, away from the arc-shaped sections, of the upper leg parts and intersect with the upper leg parts to form included angles; and the hat shape steel comprises a horizontal waist, vertical straight legs and horizontal flat legs are symmetrically arranged at the two ends of the waist respectively, and the flat legs are located at thesides, away from the waist, of the straight legs. According to the method, the production efficiency of the hat shape steel can be effectively improved, the rolling stability is improved, the processdesign difficulty is reduced, and the roller equipment loss is reduced.

The invention discloses a fixed cutter group with a positioning device. The fixed cutter group comprises an upper cutter part and a lower cutter part, wherein the upper cutter part comprises an upper cutter shaft, and a cutting disc I and a cutter pad I which are arranged on the middle part of the upper cutter shaft at a uniform interval; the lower cutter part comprises a lower cutter shaft, and a cutter pad II and cutting disc II which are arranged on the middle part of the lower cutter shaft at a uniform interval; a guide cutter pad I, a guide cutter I and a positioning cutter pad are arranged on the left part of the upper cutter shaft; the guide cutter pad I is positioned on the left side of the guide cutter I; the positioning cutter pad is positioned on the right side of the guide cutter I; the cutting disc I, the cutter pad I, the guide cutter pad I, the guide cutter I and the positioning cutter pad are fixedly connected into a whole; a guide cutter II, a guide cutter pad II and a positioning cutter are arranged on the left part of the lower cutter shaft; the guide cutter II is positioned on the left side of the guide cutter pad II; the positioning cutter is positioned on the right side of the guide cutter pad; and the cutter pad II, the cutting disc II, the guide cutter II, the guide cutter pad II and the positioning cutter are fixedly connected into a whole. The fixed cutter group has a reasonable design, high processing accuracy and high processing efficiency, and is convenient to detach and use.

The invention relates to a rolling method of small and medium shipbuilding flat-bulb steel. A direct rolling method is used for rolling the small and medium shipbuilding flat-bulb steel, and relevantrolling equipment includes 3-5 three-roller section steel mills, and all the three-roller section steel mills are horizontally arranged. The rolling process comprises the steps of (1) rough rolling, specifically, a box-type hole is rolled, and a special-shaped flat-bulb steel section is rolled on a rolled piece; (2) intermediate rolling, specifically, metal of a bulb and a web is distributed, thespecial-shaped rolled piece subjected to rough rolling is forced to be widened through large reduction to complete metal distribution of the bulb and the web at a time, and the metal proportion is setaccording to the proportion of finished flat-bulb steel; and (3) finish rolling, specifically, the rolled piece subjected to intermediate rolling and approximate to the flat-bulb steel is variably rolled to obtain an inclination angle of the bulb, and the aspect ratio of the bulb and the web of the finished flat-bulb steel is ensured. By adoption of the rolling method of the small and medium shipbuilding flat-bulb steel, the objectives of high yield and low consumption can be achieved during batch production of the shipbuilding flat-bulb steel, the work efficiency can be improved, the marketrequirement is met, and the benefits of enterprises are increased.

The invention relates to a novel anti-wrap guide plate device for a pinch roller of a steckel mill. The novel anti-wrap guide plate device for the pinch roller of the steckel mill is characterized in that a left support and a right support are respectively fastened on an upper pinch roller support through bolts; a scraper blade is respectively connected with the left support and the right support through pin shafts; the pin shafts are clamped by baffles; the tip end of the scraper blade is tangent to and tightly fit to the outer circumference of the cross section of the upper pinch roller. With the novel anti-wrap guide plate device for the pinch roller of the steckel mill adopting the technical scheme, thin strip steel can be effectively prevented from wrapping on the pinch roller, oxidized scales adhered to the surface of the pinch roller can be effectively removed, impurities such as the oxidized scales can be prevented from being fed into the pinch roller, and the strip steel can be ensured to be smoothly bitten and rolled, so that high-quality strip steel can be ensured to be produced.

In view of the shortage of manufacturing methods and materials of a conventional sleep bruxism protective occlusal splint, the invention provides a sleep bruxism protective occlusal splint prepared byapplying digital impression, computer-aided design and computer-aided manufacturing. The sleep bruxism protective occlusal splint is characterized in that upper and lower jaw dentition data and the occlusal relationship after occlusal elevation are obtained by an intraoral scanning technology, and upper and lower jaw dentition digital models and the occlusal relationship are matched with a virtual occlusal frame system of a computer; with computer-aided design software, front and rear dental cusps can be guaranteed to be in even contact with the occlusal splint; a material is cut through a computer-aided manufacturing device, medical-grade engineering plastic polyether-ether-ketone (PEEK), polyether ether sulfone (PEES) or polyether sulfone (PES) with excellent performance is used, the selected material can be determined according to the order of severity of sleep bruxism and the type of a restoration body of teeth of a patient, a final restoration body is obtained and is worn into amouth, and the dentition is protected and abnormal wear is prevented. The method aims at simplifying and optimizing the manufacturing process of the sleep bruxism protective occlusal splint, reduces discomfort, saves cost, and is beneficial to environmental protection.

The invention relates to the technical field of hot rolling of composite plates, in particular to a preparation method of a composite plate assembly capable of ensuring smooth biting of a rolled plate and a rolling method. Comprising the following steps: S1, selecting a base material and a composite material; s2, processing a processing surface at one end of the base material into a sunken plane, and forming a base material end head at the other end; s3, the sunken plane at one end of the base material and the clean surface of the composite material are attached and assembled, after the composite material and the base material are pressed and short edges of the composite material and the base material are welded, the composite material and the base material are fed into a vacuum chamber to be vacuumized, electron beam welding is conducted on the rest edges of the composite material and the base material under the high vacuum degree, and a composite plate assembly is obtained; and S4, the end of the heated composite board assembly base material is rolled in front of the composite board assembly base material. The rolling production difficulty of the thin-specification single-face stainless steel composite plate is reduced, and the equipment safety and the production efficiency are improved.

The invention discloses a piercer roller for extra-thick walls. The piercer roller comprises an entrance cone, a first exit cone and a second exit cone which are connected to each other in sequence, and the center position of the roller body is provided with a through hole; the half cone angle of the entrance cone is 7-8 DEG, and the half cone angle of the first exit cone is 14-16 DEG; and the half cone angle of the second exit cone is 16.5-18.5 DEG. According to the piercer roller for the extra-thick walls, the outer edge of the end of the entrance cone is provided with a chamber with the radius of 20 mm, and the smooth engagement of tube blanks in the rolling process is ensured. By arranging the roller surface angles of the entrance cone, the first exit cone and the second exit cone andthe outer edge chamber of the end of the second exit cone, the position of an ejector rod is closer to the front part, and the top extension is increased; and the penetrability and uniform wall thickness of seamless tubes with the extra-thick walls in the piercing process are ensured. The roller surface is provided with knurling, and the friction force of the roller and the tube blanks is increased; and the engagement force in the rolling process is increased.

The invention discloses a row-shaped steel carding device. The row-shaped steel carding device comprises a stand column, a cross beam and a carding vehicle, wherein the cross beam comprises a cross beam body, a first groove-shaped guide rail, a second groove-shaped guide rail, a first rack and a second rack; the carding vehicle comprises a vehicle body, a guide wheel, a first gear motor, a secondgear motor, a gear shaft assembly, a first oil cylinder, a second oil cylinder, a proximity switch, a swing support and a carding roller assembly; one end of the stand column is arranged on an installation foundation, and the other end of the stand column is connected with the cross beam; the carding vehicle is connected with the cross beam through the guide wheel and a gear and rack pair; and thecarding vehicle can reciprocate along the cross beam under the drive of the motors, and the operation that row-shaped steel is carded at the same time through a carding roller is achieved. The row-shaped steel carding device is high in reliability and automation degree, and carding and alignment of multiple pieces of section steel running on a front roller way of a row straightening machine can be achieved so that the row straightening machine can smoothly bite the multiple pieces of section steel in rows.

The invention provides a backstop high-expansion expansion bolt which comprises a bolt body, an outer sleeve and a nut. A pushing block is arranged at the front part of the bolt body; the outer sleeveis arranged outside the bolt body; the nut is matched with the bolt body; a spring pad and a washer are further arranged between the nut and the outer sleeve; a clamping block is installed on the pushing block, a clamping plate and a pushing groove are arranged at the front part of the outer sleeve, and the pushing block moves to enable the clamping block to rotate and simultaneously enable the clamping plate to expand, so that the clamping block and the clamping plate can be bidirectionally locked. The pushing block moves to enable the clamping block and the clamping plate to expand in two opposite directions simultaneously, therefore the device can limit outward and inward movement in the axial direction simultaneously, high expansion force can be generated, and falling is not likely tooccur.