Abstract

A nodularization method for nodular cast iron, comprising: masoning a left vertical-surface baffle (2) and a right vertical-surface baffle (3) at the bottom of a nodularization ladle (1); a semicircular upper cover plate (4) of a reaction chamber is horizontally masoned on the top of the left vertical-surface baffle (2) and the right vertical-surface baffle (3); the vertical surface of the reaction chamber is provided with one or more reaction chamber feed inlets (5) thereon; the upper end of one of the reaction chamber feed inlets (5) is provided with a pressure-relief groove (6); the upper end of the pressure-relief groove (6) is flush with the semicircular upper cover plate (4) of the reaction chamber; the masoned nodularization ladle is dried for subsequent nodularization. Nodularization comprises the following steps: placing the desired weight of integral rare earth magnesium ferrosilicon nodulizer (8), low-silicon nodulizer or non-silicon nodulizer without being externally lined with steel pipe into the reaction chamber of the nodularization ladle (1); placing the ferrosilicon inoculants into the reaction chamber of the nodularization ladle (1), the ferrosilicon inoculants being piled at the reaction chamber feed inlet (5); the molten iron is poured into the nodularization ladle (1) to conduct nodularization reaction; cleaning the scum after the nodularization reaction, and adding the composite inoculants to cover the molten iron.

IPC Classes  ?

• C21C 1/10 - Making spheroidal graphite cast-iron
• B22D 1/00 - Treatment of fused masses in the ladle or the supply runners before casting

Abstract

Provided is a nodularization-processing method for producing nodular cast iron. The method comprises: pouring a melted rare earth ferrosiliconmagnesium nodularizer alloy liquid containing Mg ≤20%, Si≤65%, and RE≤3% into a square steel tube for solidification and cooling; fixing the whole rare earth ferrosiliconmagnesium nodularizer lined on the outside with the square steel tube into a nodularization ladle using the inner and bottom masonry refractory bricks and wedge chocks in the nodularization ladle covered with a ladle cover, nodularization-processing through a pour-over ladle method; controlling the time for the nodularization reaction accurately, the temperature reduction of the molten iron being small during the nodularization-processing and pouring, the absorption rates of Mg, RE and Si becoming high after the nodularization-processing; 15 minutes after the completion of the nodularization reaction no decline in spheroidization occurs, thus improving the production environment during the manufacturing of a nodularizer and use thereof and significantly reducing production costs and increasing the quality of the product. Compared with a traditional rare earth ferrosiliconmagnesium nodularizer containing RE at a content of 2-8%, the nodularization-processing by the above method realizes the reduction of the usage amount of RE by 50-75%.

IPC Classes  ?

• C22C 33/10 - Making cast-iron alloys including procedures for adding magnesium

Abstract

A smokeless spheroidization processing method for producing nodular cast iron. Disposed in the center of a side of a rectangular or square steel pipe (13) are multiple pressure-adjusting throughholes (17) or a pressure-adjusting slit (19). Melted alloy liquid of a nodulizer of rare earth, magnesium, silicon, and iron (18) comprising Mg ≤ 20%, Si ≤ 65% and RE ≤ 3% is injected into the steel pipe (13) for solidification and cooling; a rod having a pressing head (1) fixes the nodulizer of rare earth, magnesium, silicon, and iron (18), encased in the rectangular or square steel pipe (13), inside of a spheroidization ladle (7); the rod having a pressing head (1) has a weight iron and is hung by a hook (16) of an electric motor-powered hoisting device, or the rod having a pressing head (1) is connected by a first bolt (8) on a steering shaft (2), the steering shaft (2) being disposed on a lever (4) that pivots on a lever pivot shaft, the lever pivot shaft being a third bolt and nut (12) disposed on an upright post and position-fixing and measuring scale (6). Ladle-flushing method is adopted to precisely control the spheroidization reaction time and to enable smokeless spheroidization. The absorption rates of Mg, RE, and Si are high after the reaction, thereby improving the manufacturing environment of the nodulizer preparation process and application process, and reducing production costs while enhancing product quality.

IPC Classes  ?

• C22C 33/10 - Making cast-iron alloys including procedures for adding magnesium
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

A water-saving closet comprises a bowl (1), a funnel (2), a floating ball and a pulling wire (3), a water sealing structure, a seat cushion (6), an upper cover (8), a plactic shielding cover (15) et al. The water seal structure comprises an inner water seal tank (11), an outer water seal tank (12), a rotary tank inside the inner water seal tank (11) and a rotary tank outside of the outer water seal tank (12). The closet can save water and prevent odor by using the water seal function of the floating ball and the water sealing structure. Furthermore a water-saving urinal for male comprises a bottle (18) for storaging urina, a funnel (20) with a water seal tank, a floating ball, a pulling wire and a pulling ring (21), an upper cover (23) of the bottle (18) for storaging urina et al. The urinal can save water and prevent odor by using the water seal function of the floating ball and the water seal structure.

IPC Classes  ?

• A47K 11/00 - Closets without flushingUrinals without flushingChamber potsChairs with toilet conveniences or specially adapted for use with toilets
• A47K 11/02 - Dry closets, e.g. incinerator closets
• A47K 11/04 - Room closetsChairs with toilet conveniences or specially adapted for use with toilets, e.g. night chairs
• A47K 11/12 - Urinals without flushing
• A47K 13/00 - Seats or covers for all kinds of closets
• A47K 13/02 - Seats or covers for all kinds of closets of plastic materials
• A47K 13/26 - Mounting devices for seats or covers

Abstract

An oil smoke preventing cooker that is composed of a frying pan body (1) and an oil smoke preventing metal ring (2) is provided. The inside profile of the frying pan body (1) is circular arc, or the pan brim is circular arc and the pan bottom is flat-bottomed. The wall thickness from the central position on the pan bottom whose diameter is 90-130 mm to the outer part of the pan body (1) whose diameter is 215 mm is 0.2-2.4 mm thicker than the wall thickness at central position on the pan bottom. The thickened part protrudes at outside of the frying pan body (1). The thickness of the center position of the frying pan bottom and the thickness from an upper edge of the frying pan to a position above the protruding thickened part are 1.0-2.5 mm. The oil smoke preventing cooker can control the rate of temperature rise of oil, increase quick-frying effect, and avoid the generation of the oil smoke.

IPC Classes  ?

• A47J 27/00 - Cooking-vessels
• A47J 36/00 - Parts, details or accessories of cooking-vessels
• A47J 37/00 - BakingRoastingGrillingFrying