42results about How to "Reasonable technology" patented technology

The invention discloses a compound complexing calcium preparation for treating and nourishing bones for middle and old aged people and a preparation method thereof. The preparation is scientifically processed by a formula comprising deep sea fish bones, deep sea cuttle bones, biological calcium carbonate, tigris artifactus powder, collagen powder, vitamin K2, vitamin D, glucosamine, eucommia ulmoides, cordyceps sinensis, bovine coloctrum, magnesium, alpha-linolenic acid, xylitol and magnesium stearate. The formula of the invention is scientific in compatibility and reasonable in match of nutritional elements, and integrates the health-care effects of calcium supplement for bone-formation, calcium supplement for treating bones, calcium supplement for nourishing bones, calcium supplement for reinforcing bones, calcium supplement for improving the immunity and calcium supplement for enhancing the self-healing and rehabilitating capacity of the body. The preparation is remarkable in effect, high in clinical cure rate and excellent in contrast result with other calcium products clinically. The preparation is reasonable and feasible in process technology and is convenient to take by prilling and coating. The advanced, scientific and unique structure of the product is an advantage of the preparation.

A process for preparing high-purity xylose crystal by hydrolyzing corn peel includes such steps as boiling hydrolyzing with sulfuric acid or hydrochloric acid at 105-125 deg.C, separating and recovering the sulfuric acid or hydrochloric acid from the hydrolyte by analog moving-bed, decoloring, refining by ion exchange, purifying by analog moving-bed, and crystallizing in thee-effect evaporator.

The invention relates to a thermal treatment deformation control method for a duplicate spiral bevel gear. By carburizing on a component for twice, a problem that carburizing layers of different parts of the component are different in depth is solved, and the conventional quenching mode is changed; allowance is reserved during machining, and the machining allowance is changed into deformation compensation dosage under the action of quenching pressure of a mould on the top of the bevel gear, so that the carburizing layer precision of the duplicate spiral bevel gear is controlled within 0.1mm, and the + / -10' error control on taper angle at two sides is realized. The thermal treatment deformation control method disclosed by the invention is reasonable in process technology, remarkable in deformation control effect, and capable of providing a novel thought for deformation control of similar products.

The invention relates to a method for recycling low-concentration nitric acid solution in the production of ethylene glycol from calcium carbide furnace tail gas. Methanol and nitric acid, under the action of methanol vapor heat tracing, pass through the recovery and utilization system of low-concentration nitric acid waste liquid, and react to form methyl nitrite and water. The invention solves the problem of difficult recovery of dilute nitric acid produced by side reactions in the regeneration of methyl nitrite, and effectively reduces the content of nitric acid in the regeneration of methyl nitrite. It has the advantages of high recovery and utilization rate of nitric acid, reasonable economy, feasible process technology and the like.

The invention discloses a device for processing rectangular splines in a hard tooth surface. The device is an adaptive centering device. The self-adaptive centering grinding device includes a grinding head, an adaptive steel ball, a grinding Rod, bushing and base, the bushing is installed and fixed in the inner hole of the base, the parts are placed in the positioning hole in the bushing, the top end of the grinding rod is provided with a center hole, and the self-adaptive steel ball is placed in the center hole of the grinding rod for grinding The rod matches the inner rectangular spline of the part, and the grinding head presses on the adaptive steel ball to push the grinding rod down to grind the inner rectangular spline of the part. The invention can ensure the dimensional accuracy, parallelism and positional degree of the inner rectangular spline.

The invention provides a preparation method of an electrolytic manganese slag autoclaved brick. The method comprises the following steps: after preprocessing the electrolytic manganese slag, adding river sand (or fly ash), broken stone and lime in proportion; and stirring, assimilating, rolling, molding, standing, autoclaving and curing, and the like to obtain the electrolytic manganese slag autoclaved brick. The product meets the corresponding index requirements of Autoclaved Sand-lime Brick (GB11945-1999) or Fly Ash Brick (JC239-2001) for a first quality product with the strength level of more than 15MPa. The method has simple technology, high product quality, low production cost and good social, economic and environmental benefits.

The invention relates to a method for solving the problem of excessive seepage of an 18CrNi4A material narrow-tooth-shaped component tooth crest. The traditional thermal treatment technology is changed, primary carburization is changed into secondary carburization, the measure that before primary carburization, a copper plating protection area extends to the two side tooth face parts connected with the tooth crest from the tooth rest is taken, finally, a carburization layer of the tooth crest of the component in the thermal treatment process is qualified, and the phenomenon of excessive seepage of the tooth crest cannot happen. The technology is reasonable, an ideal effect is achieved, and the normal usage requirement for the component is guaranteed.

The invention relates to a method for preventing excessive seepage of a 16Cr3NiWMoVNbE material narrow-tooth-shaped component tooth crest. The traditional thermal treatment technology is changed, primary carburization is changed into secondary carburization, and after the primary carburization is ended, only a tooth crest copper plating layer area is reserved, and secondary carburization is carried out. By means of the technology, a carburization layer of the tooth crest of a component in the thermal treatment process is finally qualified, and the phenomenon of excessive seepage of the tooth crest cannot happen. The technology is reasonable, when the high and medium part of component teeth can meet the design requirement, the thickness of the carburization layer of the tooth crest can also meet the requirement, and normal usage of the component is guaranteed.