74results about How to "Solve forming problems" patented technology

A process for preparing the cationic hydroxyalkyl guar gum includes such steps as dispersing the raw powder of guar gum in the aqueous solution of low-carbon alcohol, adding high-alkaline catalyst, immersing, adding cationic etherifying agent, cationic graft reaction, adding phase-transfer catalyst and alkoxy etherifying agent, hydro-xyalkylating reaction, neutralizing and filtering. It can be used as the retention aid or filter aid of paper pulp.

The invention relates to a coaxial powder delivery nozzle applied to a variable spot technique. The nozzle consists of three parts, wherein a first part is a structure for automatically regulating the collection position of powder in the nozzle in the vertical direction, and the part further comprises a cooling water loop and a gas protecting device; a second part is a structure for manually regulating the collection position of the powder in the horizontal diameter direction; and a third part is a powder delivery sprayer structure. The coaxial powder delivery nozzle disclosed by the invention is applicable to the field of material increase manufacturing, and especially applicable to an application place adopting a defocusing manner to realize temporary variable spot formation of laser for realizing both formation efficiency and precision. The coaxial powder delivery nozzle disclosed by the invention can also be applied to the field of laser welding.

The invention discloses forming device and method for additive manufacturing of inorganic cementing material products. The device is provided with no less than two groups of spray heads or spray headarrays which are used for spraying coagulants and permeability-preventing agents into the planes of inorganic cementing materials correspondingly; and combined with the corresponding method, the device is used for manufacturing inorganic cementing material products and special ceramic products which are complex in structural shape and high in dimensional precision and surface quality requirements.The coagulants react with the inorganic cementing materials and are solidified into a whole; a permeability-preventing layer is formed between the permeability-preventing agents and the inorganic cementing materials, and isolation belts for blocking the penetration of the coagulants are formed between the products and powder materials around the products, so that the products have better surfacequality and higher dimensional precision, and the powder materials which are used for forming of the products are not polluted.

The invention relates to a hot pressing forming mould of a super long branch pipe three-way pipe fitting, comprising a first upper die, a second upper die, a first lower die, a second lower die, a third lower die, a fourth lower die and a draw bar. A primary forming mould consists of the first upper die and the first lower die; a secondary forming mould consists of the first upper die and the second lower die; a third forming mould consists of the first upper die and the third lower die; and a final forming mould consists of the second upper die, the fourth lower die and the draw bar. The invention also relates to a hot pressing forming method which adopts the mould to manufacture the super long branch pipe three-way pipe fitting. Two upper dies and four lower dies are adopted by the invention to be drawn and extruded step by step into a super long branch pipe; in each hot pressing forming process, the tensile deformation of the materials is ensured to be within the tensile rate limitby controlling the root R and the outer diameter D of the branch pipe to be decreased successively, thereby solving the forming problem of super long branch pipe tee (M>1.5C).

The invention discloses a centrifugal film coating apparatus, which comprises a base and a centrifugal film coating device arranged on the base. The centrifugal film coating device comprises a film coating tool, a transmission sleeve shaft, a drive motor and a drive control system, wherein the film coating tool is arranged in the horizontal direction, continuously rotates and simultaneously drives internal materials to carry out centrifugal motion; the transmission sleeve shaft is coaxially sleeved outside the film coating tool and drives the film coating tool to continuously rotate; the drive motor is connected with the transmission sleeve shaft; the drive control system controls and adjusts the rotating direction and the rotation of the drive motor; and the left end part and the right end part of the transmission sleeve shaft have openings and the right ends of the left end part and the right end part are assembled with a U-shaped compressing member through a plugging member, and the left end is assembled through a Pi-shaped compressing member. The invention has the advantages of simple structure, simple and convenient using operation, low noise, safe and reliable operation, recyclable slurry, high rotation speed and high efficiency, can completely meet the technical requirement on molding centrifugal classification deposition, and solves the actual problem that the powder with different granularities is deposited in turn.