Manufacturing method of ultrahard aluminium alloy

Rebar bending tool

The invention relates to a rebar bending tool comprising a straight rod and an opening used for bending a rebar. The straight rod comprises a first straight rod and a second straight rod. The first straight rod is in rotational connection with the second straight rod. When the rebar bending tool is used in narrow space, the rebar can be bent just by bending the second rod, connecting the second rod to the rebar in a contact manner and forcing the first straight rod. The rebar bending tool is simple in structure, convenient to use, available for narrow places, and widely applicable. A groove provided allows the second straight rod to be fixed better. A fixing rod and a fastener form a support point for the second straight rod, the second straight rod can be avoided sharply sliding during use, safety is higher, and smooth operation is ensured.

Inclined pile inner supporting sleeve device with angle adjusting function and operation method of inclined pile inner supporting sleeve device

The inclined pile inner supporting sleeve device with the angle adjusting function comprises a lower sleeve, a lower supporting rod is arranged at the top end of the lower sleeve, an upper supporting rod is arranged on the outer side of the lower supporting rod, a connecting hole is formed in the bottom end of the upper supporting rod, a round hole is formed in the middle of the lower supporting rod, and a rotating shaft is arranged in the connecting hole and the round hole; the middle part of the spacing plate is provided with a connecting rod, the spacing plate is arranged on the lower sleeve, and after the angle is adjusted and the spacing plate is butted with the preloading device, the spacing plate can be supported at a specified position of a crown beam, the size of the crown beam does not need to be changed later, a supporting system with reasonable stress is formed, and the angle is adjustable; the problem of inclined pile construction angle deviation can be solved, the inclined ...

Steel ball lapping liquid

The invention discloses steel ball lapping liquid comprising the following components in percentage by weight: 8-12 percent of triethyl oleate soap, 10-14 percent of polyethyleneglycol, 8-12 percent of diglycol, 0.5-1-5 percent of glycerin, 6-7 percent of detergent, 1.2-1.8 percent of sodium nitrite, 0.8-1.2 percent of industrial sodium carbonate, 0.8-1.2 percent of antifoaming agent and 55-60 percent of water. The steel ball lapping liquid has the advantages of no oil, no odor, no toxicity, good chemical durability, environmental pollution reduction and safe and convenient use. In a steel ball processing process, by adopting the steel ball lapping liquid, the surface quality and the work efficiency of steel balls can be improved.