62results about How to "Good mechanical quality" patented technology

A multilayer hose made of plastics material for transporting highly solvent chemicals such as paint, the hose including, from the inside to the outside, a polyamide / polyolefin alloy layer, a polyurethane-based adhesive layer, a flexible plasticized layer of polyvinyl chloride, and tubular reinforcement in contact with the polyvinyl chloride.

The invention relates to an ultrasonic flat type piezoelectric vibrator which is made of niobium zinc-niobium lead stannate. The chemical molecular formula is Pb(Zn1 / 3Nb2 / 3)x(Sn1 / 3Nb2 / 3) yTizZr1-x-y-zO3. A proportioning test is carried out by setting x and y in the molecular formula of the niobium zinc-niobium lead stannate material to be within the ranges of 0<x<0.1 and 0<y<0.1 and respectively setting Ti and Zr to be within the range of 0.4 to 0.44; and the numerical values of x, y and z are determined from a test result, namely, the optimal proportion of each component is determined. In the design scheme, utilization performance is largely enhanced, service life is largely prolonged, the mechanical quality, the factor and the tensile strength of piezoelectric ceramics which are finished are improved, the sensibility of the ultrasonic flat type piezoelectric vibrator is enhanced, the loss is reduced, the tensile strength is improved, and the aging performance is improved. Piezoelectric ceramic chips and a silver electrode are connected through a red copper film the surface of which is coated with a stannum layer, thus, defects such as convex welding points, higher resistance and the like of a traditional product are avoided. The vibrator can carry heavier current, is difficult to break or burn out, and has excellent consistency and reliability; and the rate of finished products is increased to 99% from original 92%.

An improved method and an improved apparatus are provided for producing a thin glass ribbon, which provide borders at the edges of the ribbon. The edges formed are of high mechanical quality and a formation of new secondary borders after the severing or at least the thickness of such secondary borders is reduced compared to the original borders. The method includes drawing the thin glass ribbon from a molten glass or from a preform, severing the borders, and cooling the resulting glass ribbon. The severing is effected at a location along the moving direction of the thin glass ribbon and at a time at which during the cooling of the thin glass ribbon the viscosity of the glass is in a range from 107 dPa·s to 1011 dPa·s, so that the edges of the thin glass ribbon newly produced by the severing of the borders are rounded off.

The invention discloses a modification treatment method for enhancing the antibacterial property of polyester fiber, comprising the following steps: (1) pretreatment of the polyester fiber, (2) preparation of composite soaking liquid, and (3) modification treatment. Special modification treatment is performed on the polyester fiber, and obviously enhances the antibacterial ability of the fiber, and the fiber has good antibacterial stability, strong washing fastness, good mechanical quality, great market competitiveness, and great production and processing benefits.

The invention provides a piezoelectric ceramic material and a piezoelectric vibrator manufactured by the same. The piezoelectric ceramic material has four components of niobium zinc acid lead, niobium tin acid lead, lead zirconate and lead titanate. The piezoelectric ceramic material contains main components represented by a chemical general formula Pb(Zn1 / 3Nb2 / 3)x(Sn1 / 3Nb2 / 3)yTizZr1-x-y-zO3. Performance test proves that the material is superior to like materials in the country and approaches or achieves world standard in relative dielectric constant, piezoelectric constant and mechanical quality factor. The piezoelectric ceramic vibrator prepared by the piezoelectric ceramic material remarkably prolongs service life and accuracy, so that the piezoelectric ceramic material has wide application prospect.

The invention discloses dust removal equipment with high efficiency and a strong purification effect. The dust removal equipment comprises a housing, a control device and a gas collection chamber; a rotating mechanism is arranged in the housing, the rotating mechanism is composed of an inner rotating mechanism and an outer rotating mechanism, an external gas chamber is formed between the outer rotating mechanism and the housing, an internal gas chamber is formed between the outer rotating mechanism and the inner rotating mechanism, gas introduction plates, rotating wheels and partition platesare arranged at the bottom of the external gas chamber, a first filter mechanism is arranged on a bottom isolation wall between the external gas chamber and the internal gas chamber, and a second filter mechanism is further arranged at the top of the housing. The dust removal equipment is high in dust removal efficiency and good in purification effect, is stable in use quality and has great marketcompetitiveness.

The invention relates to aluminum oxide powder, and an aluminum oxide ceramic and a preparation method thereof, and provides aluminum oxide ceramic powder, which comprises the following components inparts by weight: 100-115 parts of aluminum oxide, 23-28 parts of aluminum hydroxide, 5-6 parts of magnesium oxide, 6-7 parts of titanium dioxide powder, 1-5 parts of magnesium silicon nitride powder,10-15 parts of a silane coupling agent, 3-4 parts of a binder, 15-20 parts of zirconium oxide, 2-6 parts of aluminum nitride powder, 1-2 parts of a defoaming agent and 5-8 parts of AlF3. According tothe invention, the raw material components of the aluminum oxide ceramic are reasonably matched, so that the use quality of the aluminum oxide ceramic powder is optimized; and the green body is kept in a certain shape and has high density and compactness by virtue of the interaction force among aluminum nitride, aluminum oxide, zirconium oxide and magnesium oxide, so that ceramic sintering is facilitated, the sintering temperature can be reduced, and the ceramic density is improved.

The invention discloses a processing method capable of enhancing the dyeing ability of a woody woven material. The method comprises the following steps: (1) cleaning treatment, (2) blasting treatment,(3) first drying treatment, (4) composite modification treatment and (5) secondary drying treatment. Special treatment is performed on the woody woven material, the processability, dyeing ability andmechanical quality of the woody woven material are improved effectively, the service life is prolonged, the use grade is enhanced, and high competitiveness on the market is achieved.

The invention discloses a damper with adjustable hammer head spacing and a manufacturing process thereof, which belong to the technical field of damper manufacturing. The damper comprises a damper body, the damper body is composed of a fixing base, a connecting rod and semicircular damper bodies. The two sides of the two ends of the fixing base are connected with two connecting rods, the front ends of the connecting rods are connected with semicircular hammer bodies respectively, a fixing steel rod is welded to the inner end face of the fixing base, the fixing steel rod is sleeved with a movable steel pipe, the movable steel pipe is arranged in an adjusting box, a connecting ring is fixedly installed above the adjusting box, and a position adjusting groove is formed in the adjusting box. The invention discloses a damper with adjustable hammer head spacing and a manufacturing process thereof. The damper body is good in mechanical quality, high in use stability and high in practicability, the toughness and the hardness of the whole movable steel pipe are guaranteed, the stability in the moving process is improved, the spacing can be adjusted according to wind power, the damper can better counteract vibration caused by wind power to a cable, and the service life of the cable is prolonged.

This invention relates a fully drawn high tenacity yarn and a process for making the same from a partially oriented polyester feed yarn in a drawing process comprised of two stages.