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747results about How to "Easy to cast" patented technology

Golf club head with increased radius of gyration and face reinforcement

An improved high impact metal clubhead with a unique reinforced composite face wall, increased radius of gyration, and a positive lift air foil surface contour. The composite face wall includes an impact supporting wall rigidified by a pattern of integrally cast reinforcing bars that extend forwardly, rather than rearwardly, from the supporting wall. The reinforced supporting wall is covered by a very hard plastic ball striking insert that is cast in situ over the supporting wall. The increase in radius of gyration is accomplished by extending the heel and toe portions of the clubhead along the face wall further from the geometric center of the head, beyond present day parameters for high impact clubheads. And the positive lift is effected by contouring the top wall of the clubhead downwardly and rearwardly from the base wall more severely almost to the plane of the sole plate, and flattening the rear wall so it is almost co-planar with the sole plate. This configuration results in the top wall being equal to or greater in length than the combined length of the sole plate and rear wall in a vertical plane extending through the clubhead along the target line. The laws of continuity of matter and the air foil shape of the top wall eliminate the negative lift or drag in today's "woods" and offer the possibility of some positive lift to increase ball overspin.
Owner:KARSTEN MFG CORP

Alloy cast steel for high speed train brake disc, heat treatment method thereof and high speed train brake disc manufactured by the alloy cast steel

ActiveCN103510024AAvoid plasticityToughness to avoidManganeseMechanical property
The invention discloses an alloy cast steel for a high speed train brake disc, a heat treatment method thereof and a high speed train brake disc manufactured by the alloy cast steel. The alloy cast steel is composed of the following components in percentage by weight: 0.18-0.26% of carbon, 0.16-0.50% of silicon, 0.55-1.40% of manganese, not larger than 0.03% of phosphorus, not larger than 0.03% of sulfur, 0.90-2.00% of chromium, 0.71-1.80% of nickel, 0.65-1.20% of molybdenum, 0.20-0.35% of vanadium, not larger than 0.30% of other components, smaller than 0.1% of tungsten and the balance of ferrum; and the heat treatment method comprises two steps of normalizing and tempering. The alloy cast steel disclosed by the invention has the beneficial effects that such alloy elements as manganese, nickel, chromium, molybdenum, vanadium, and the like, and such main components in the cast steel material as carbon, silicon and the like are reasonably mixed and are effectively thermally treated to refine the crystalline grain and improve the hardenability and heat resistant properties of the alloy cast steel material, and the normal temperature strength and the high temperature strength are greatly improved, so that the alloy cast steel material has excellent comprehensive mechanical properties. A brake disc manufactured by the alloy cast steel can meet the application requirements of high speed trains.
Owner:CRRC QISHUYAN INSTITUTE CO LTD +1

Tooth and Adaptor Assembly

Abstract A tooth and adaptor assembly (11) for use on earthmoving machinery, the assembly comprising an adaptor (21) adapted to be secured to a bucket or like component on the earthmoving machinery. The adaptor (21) comprising a nose (27) having an at least one sidewall (35) incorporating a first channel (37) and a second channel (39) angled relative to each other. The assembly (11) also a tooth (41) adapted to be received on the adaptor (41) and releasably secured thereto. The tooth comprises a socket (43) having sidewalls (53). At least one sidewall (53) incorporates a third channel (55) at an angle complementary to the second channel (39), such that when assembled the two channels (39, 55) co-operate to define an enclosure (91). An upper wall (49 of the socket (43) has at least one aperture (57) therethrough, and which is aligned with the third channel (55). The assembly (11) further comprises at least one locking mechanism (71) for locking the tooth (41) to the adaptor (21). The locking mechanism (71) having at least one projection (77) and adapted to be received through the aperture (57). During assembly the projection (77) moves inwardly with respect to the locking mechanism (71) as it enters the enclosure, the locking mechanism (71) moving towards its normal extended position when the projection (77) aligns with the first channel (37) wherein the assembly (11) is in its locked condition.
Owner:BRADKEN OPERATIONS

Steel sheet pile and open caisson combined underground garage and construction method thereof

The invention discloses a steel sheet pile and open caisson combined underground garage. A body structure of the underground garage comprises an external wall and an external wall supporting structure; the external wall is composed of an upper external wall body and a lower external wall body which are connected in an up-down manner; the upper external wall body is a steel plate pile wall formed by connecting steel plate piles with one another; the lower external wall body is a reinforced concrete well wall of an open caisson; and the external wall supporting structure serves as a supporting structure of a parking platform of the underground garage at the same time. The external wall of the underground garage adopts a compounded external wall composed of the steel plate pile wall and the well wall of the open caisson, and the beneficial effects of the steel plate pile wall and the well wall of the open caisson are combined. The invention further discloses a construction method of the underground garage. According to the construction method, firstly, the steel plate piles sink to form the steel plate pile wall; and then the open caisson is poured in the steel plate pile wall and sinks. By means of the construction method, the building cost of the underground garage is successfully reduced, and the building time of the underground garage is successfully shortened.
Owner:JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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