A vertebral axial decompression table is operated by applying a baseline tension to the two table parts, increasing tension to about 50% of maximum above baseline, then logarithmically increasing tension to maximum tension. Thereafter, tension is linearly relaxed back to baseline. This cycle is repeated a programmed number of times to effect a therapy session. Data concerning the table operation is transmitted to allow remote monitoring and re-programming of the table.

Operation of a vertebral axial decompression table

The invention relates to a method for manufacturing a metal solid cored wire with a composite material structure, and particularly relates to a method for manufacturing a high-magnesium-alloy solid cored wire for molten iron spheroidization, and is suitable for the method for manufacturing the high-magnesium alloy solid cored wire with brittle magnesium alloy components. The method is characterized by comprising the following steps of: distributing hard and brittle components in a compound in a continuous matrix of a soft metal component in a form of particles by adopting a particle enhanced metal matrix composite material method, forming a flexible metal wire and wrapping to form the metal solid cored wire for the molten iron spheroidization, namely mixing metal magnesium and calcium particles, magnesium-rare earth alloy powder, industrial silicon powder and the like according to a certain proportion, performing cold-pressing to form a blank, preheating and hot-extruding to form the metal wire, and wrapping by a cold-rolled steel band which is 0.3 or 0.4-millimeter thick on a core coating machine to form the metal cored wire. The treatment cost is greatly reduced, and the spheroidization quality is remarkably improved.

Method for manufacturing high-magnesium-alloy solid cored wire

The invention discloses a spheroidizing agent for spheroidal graphite cast iron, belonging to the field of cast iron metallurgical technology, and aiming at overcoming the defects that the spheroidizing effect of the spheroidizing agent in the prior art is poor, and the mechanical properties of the obtained spheroidal graphite cast iron can not meet the requirements. The spheroidizing agent for the spheroidal graphite cast iron comprises the components by mass percent: 2-7% of Y, 7-9% of Mg, 37-44% of Si, 2-3% of Ca, 0.3-0.4% of Sb, 0.1-0.4% of Mn, 0.2-0.5% of Al, 0.2-0.5% of Ti, and the balance of Fe and unavoidable trace elements. The invention also discloses a preparation method of the spheroidizing agent for the spheroidal graphite cast iron. The spheroidizing agent is good in spheroidizing effect, and the spheroidal graphite cast iron obtained by spheroidizing has high toughness, ferrite quantity and spheroidization rate so as to be especially suitable for castings of various machine moulds with high strength and impact power.

Spheroidizing agent for spheroidal graphite cast iron, and preparation method thereof

The medicine for exterior use to cure encephalitis, cerebral hemorrhage, viral high fever, burn, scald, wound, etc. with specific effect is prepared with 7 Chinese-medicinal materials such as coptis root, phellodendron, turtle shell, borneol, antelope's horn, etc.

Heat-clearing and detoxifying drug for external use

The invention relates to a spheroidizing agent which comprises the components by weight percent: 50-60% of Mg, 08-12% of RE, 30-35% of Ca, 42-44% of Si, 35-45% of Ba, 05-07% of Sr, 01-018% of Bi and the balance of Fe The invention also provides a preparation method and the usage of the spheroidizing agent The spheroidizing agent is added with a little Mg and RE; thin-wall ball iron castings can be obtained without heat treatment after a little spheroidizing agent is added into the production of ductile iron; and the body sampling tensile strength is 420-650 MPa, and the elongation is more than 20% Therefore, the problems that the thin-wall castings have part chill or complete chill for a long time, so that the using performance is reduced, the tempering treatment is needed to be carried out, and the production cost is increased can be solved

Spheroidizing agent as well as production method and usage thereof

The present invention refers to a casting alloy, esp. nodulizer for production of cast pearlite nodular cast iron. The said nodulizer contains Mg 5-9 wt%, Ca 3.5-5.0 wt%, Ba 1.0-3.5 wt, Si 35-50 wt%, Sb 0.5-4.0 wt, and balanced Fe. The nodulizer thus made is a lump alloy, available size in two variants: 3-25 mm and 25-100 mm.

Yuming Zhu

Papers

Nodularizing additive for casting high strength nodular graphite cast iron