38results about How to "Reduce demoulding resistance" patented technology

The invention provides a polyphenylene sulfide resin composition including: 1 to 100 parts by weight of an olefin elastomer (B); and 0.01 to 10 parts by weight of a carboxylic acid amide wax mixture (C), relative to 100 parts by weight of a polyphenylene sulfide resin (A), wherein the carboxylic acid amide wax mixture (C) is obtained by adding 0.01 to 5 parts by weight of an antioxidant to 100 parts by weight of a carboxylic acid amide wax produced by reaction of a higher aliphatic monocarboxylic acid, a polybasic acid and a diamine.

Provided is an injection molding method for a resin substrate, wherein: through-holes are provided on a plate-shaped substrate so that they are penetrated from one surface of the substrate in the direction of the other surface in a way such that the diameter of the hole gradually becomes smaller; and micro-passages that connect to the through-holes are provided on the other surface of the substrate. A cavity is formed by joining a first molding die that forms one surface with a second molding die that forms the other surface. One part of the first molding die that forms the through-holes comprises taper pins that protrude from the first molding die towards the second molding die. The substrate is formed by filling the cavity with resin material, and the substrate is released from the second molding die by separating the first molding die from the second molding die. By pushing out the inner walls of the through-holes with the taper pins that are projected further towards the second molding die, the substrate is released from the first molding die.

The invention discloses an easy-to-release anti-blocking original-side ceramic tile forming mould and belongs to the technical field of powder forming. The easy-to-release anti-blocking original-side ceramic tile forming mould comprises an upper mould core, side plates and a lower mould core which define a mould cavity. The easy-to-release anti-blocking original-side ceramic tile forming mould is characterized in that a ventilating path and a plurality of gas vent holes are formed in the upper mould core, wherein one end of each gas vent hole is communicated with the bottom surface of the upper mould core, the other end of each gas vent hole is communicated with the ventilating path, the ventilating path is connected with a gas exhausting branch and a gas blowing branch; the side plates comprise long side plates and short side plates which are enclosed in two adjacent long side plates, wherein first inclined positions which are outwards inclined from top to bottom are formed in the inner walls of the long side plates and the short side plates; second inclined positions are formed in the two ends of each short side plate; the long side plates and the short side plates can be tightly assembled together through the first inclined positions and the second inclined positions. A ceramic brick green body finished product pressed out by the forming mould does not need edging processing; moreover, in the pressing process, the gas exhausting system can be prevented from being blocked, the demoulding is easy to carry out and the mould is prevented from being blocked, so that the forming quality of the original-side ceramic tiles can be improved.

A flexible-pier horizontal separation seam construction method and a construction apparatus therefor. The flexible-pier horizontal separation seam construction apparatus (1) comprises a combined drawing plate. The combined drawing plate comprises s bottom drawing plate (2), a hard foam plate (3), edge sealing drawing plate (4), and a top drawing plate (5); the hard foam plate (3) is located above the bottom drawing plate (2) and adjacently connected to the bottom drawing plate (2); a first side surface (31) of the hard foam plate (3) is flushed with a second side surface (21) of the bottom drawing plate (2); the edge sealing drawing plate (4) is located above the bottom drawing plate (2) and adjacently connected to the bottom drawing plate (2); a third side surface (41) of the edge sealing drawing plate (4) is adjacently connected to a fourth side surface (32) of the hard foam plate (3); the fourth side surface (32) is provided opposite to the second side surface (21); the top drawing plate (5) is located above the hard foam plate (3) and the edge sealing drawing plate (4) and adjacently connected to the hard foam plate (3) and the edge sealing drawing plate (4) respectively; a fifth side surface (51) of the top drawing plate (5) is flush with the first side surface (31). Also provided is a construction method for the construction apparatus. The flexible-pier horizontal separation seam construction method and the construction apparatus therefor both have the advantages of high seaming depth, high seaming accuracy, and good seaming quality.

The average roughness Ra of a mold tool surface that comes into contact with a material to be molded measured for a measurement area 10 μm square or smaller is equal to or lower than 5 nm, and fine granular projection structures having diameters ranging from 10 to 80 nm and heights ranging from 10 to 40 nm are formed on the mold tool surface with a density of 400 / μm2 or higher. The frictional force due to the anchoring effect or the digging effect is reduced, and the adhesive force due to meniscus is also reduced. The release resistance is significantly reduced without affecting the dimensional precision of a fine molded product.

The invention discloses a short fiber reinforced carbon / resin composite material hot pressing molding demoulding method, which includes the following contents: (1) C and N co-infiltration technology on the surface of a 65Mn separator for hot pressing molding demoulding, adopting dripping methanol to pass ammonia The 65Mn separator is carbonitrided by the gas method; (2) a mold release agent for hot pressing molding, the specific components are 10%-30% flake graphite powder, 20%-40% nano-scale cubic nitriding The mixed powder of boron powder and 30%-50% nano-scale zirconia powder is composed of polyethylene glycol as a binder. The process of the invention is simple, the process parameters are easy to control, the smoothness after grinding and polishing of the separator for hot-pressing molding, the anti-hot-pressing inlay performance and the anti-hot-pressing die-bonding performance are improved, and the hot-pressed short fiber reinforced carbon / mold is significantly improved. Surface quality and production efficiency of resin composites.

The invention relates to the technical field of coating, in particular to metal mold environment-friendly coating for carbon ferroalloy casting based on oxidation-reduction reaction and a preparationprocess thereof. The environment-friendly coating comprises, by weight, 0.1-30 parts of limestone powder, 0.1-30 parts of dolomite powder, 0-30 parts of magnesite powder, 0-30 parts of ferrochrome dust removal powder, 0-30 parts of manganese alloy dust removal powder, 0.1-20 parts of silica powder, 0.1-10 parts of pulverized coal and 0-10 parts of asphalt powder. The preparation process comprisesthe steps of grinding limestone powder and dolomite powder, diluting a Na2SiO3 aqueous solution, and conducting stirring, testing, tinning, and packaging. The environment-friendly coating is mainly used for the metal mould casting of ferroalloy with low carbon requirements, such as high carbon ferrochrome, high carbon ferromanganese and manganese silicon alloys, and the problems that a mold is stuck and the damage to the mold is serious in casting of the alloys are solved; and the preparation process is high in production efficiency and facilitates large-scale production.

The invention discloses a wall building formwork applicable to intelligent construction of a vertical shaft. The outer surface of the formwork is coated with a Teflon coating; a main body comprises a core frame cylinder, curve sliding rails and segmental sliding forms, and formwork supporting and releasing actions of the segmental sliding forms are realized by the aid of radial contraction indirectly produced by vertical traveling of the segmental sliding forms in the longitudinal direction through the curve sliding rails. Leveling and centering of the formwork are subjected to servo adjustment by corresponding hydraulic oil cylinders after pose determination by sensors, and circularity regulation is not needed. The formwork has basic function of a concrete pouring envelop structure as well as capacity of monitoring and evaluating the quality and an evolution process of cast-in-place concrete by means of setting of pressure, temperature, moisture and ultrasonic measurement points on the outer surface of the formwork. The formwork has the characteristics of being reasonable in structure, reliable in work, quick in action and capable of performing automatic centering and leveling and evaluating the pouring quality of the concrete in real time, and realizes intelligence of the construction process of the vertical shaft.

The invention belongs to the technical field of automobile part casting processing, and particularly relates to a demoulding device which comprises a cylindrical mold body which is rotationally arranged on a frame along a horizontal axis. The inner annular surface of the cylindrical mold body is conical, the diameter of a first end of an inner annular surface of the cylindrical mold body is smaller than that of a second end, a first end plate is arranged at the first end of the inner annular surface of the cylindrical mold body, a second end plate is arranged at the second end of the inner annular surface of the cylindrical mold body, each of the first end plate and the second end plate is of an annular structure, and the first end plate and the second end plate are in sliding fit with thecylindrical die body in the axial direction of the cylindrical die body; and a clamping claw capable of opening and closing in the radial direction of the cylindrical die body and moving in the axialdirection of the cylindrical die body is arranged in a central hole of the first end plate. The clamping claw can support the inner wall of a cylinder sleeve after the cylinder sleeve is formed, so that an inner coating of a mold is prevented from being damaged due to friction between the outer wall of the cylinder sleeve and the bottom surface of the inner wall of the cylindrical mold body during demoulding, and demoulding resistance is reduced.

The invention discloses a mold for forming a step-shaped carbon fiber cohesive body and an application method thereof, and belongs to the technical field of inorganic nonmetallic material forming. Themold comprises an upper mold body, a lower mold body, a base and a locking part; the upper mold body is composed of an upper mold fixing plate, a cylindrical pressure head and a cushion block, wherein the upper mold fixing plate and the cylindrical pressure head are connected through screws, and the cushion block is arranged at the lower part of the cylindrical pressure head; the lower mold bodyis composed of a circular ring, a forming cavity and a lower mold fixing plate, wherein the circular ring is in interference fit with the forming cavity, and the lower mold fixing plate is connected to the lower end surface of the circular ring; the base plays a supporting role; the locking part is used for locking the upper mold body and the lower mold body; the upper mold body is matched with the lower mold body; and the lower mold body is arranged on the base. The mold has the advantages that the structure is compact and reasonable, in the forming process of the step-shaped carbon fiber cohesive body, no carbon fiber escapes, the fluidity of resin is good, the forming resistance is small, the upper mold body moves downwards smoothly, the step-shaped carbon fiber cohesive body prepared through the mold is completely formed, and the use is safe and reliable.

The invention discloses an automatic die-filling and die-stripping device, which comprises a framework, wherein a molded skeleton is arranged in the framework, a die cavity which is formed by splicing at least two movable templates is arranged in the skeleton, the top of the skeleton is provided with a pressure block and a resilient cushion block, the position, adjacent to the upper end, of the skeleton is provided with a positioning oblique guide groove which is inclined inwards and upwards, the position, adjacent to the bottom, of the skeleton is provided with a depression bar with a corresponding angle; the position, adjacent to the upper end, of the movable template is provided with a sliding limiting guide block which is matched with the positioning oblique guide groove; a corresponding angle is formed between sliding limiting guide block and the positioning oblique guide groove, and the position, adjacent to the bottom, of the movable template is provided with a positioning cushion block which is matched with the depression bar; and a corresponding angle is formed between positioning cushion block and the depression bar. By adopting the automatic die-filling and die-stripping device, multiple concrete prefabricated members can be produced in one step and integrally demoulded in one step. The automatic die-filling and die-stripping device is simple in structure, the machine is used for substituting the manual steps for installing the die, stripping the die and the like, the labor production efficiency can be greatly improved, the completeness of the concrete prefabricated member can be guaranteed, the rejected products can be reduced, and the labor intensity of workers can be alleviated.