Method of treating goaf - closed space method

A partition wall of a certain thickness is built in the roadway leading to the gob area, so that the air waves generated by the collapse of the empty area are buffered, so as to prevent the casualties and damages of people, roadways, etc. caused by the impact of the air. Sky, Mountain copper mine used this method.

(2) Applicable conditions of the closure method:

1 The ore and surrounding rock are extremely stable, the thickness and depth of the ore body are not large, the buried channel is not deep, and the mining period of the ore body is not long.

2 Buried is a deep area formed by scattered and isolated blind ore bodies. It is far away from the main ore body or the main production area, and no mining work is carried out in the lower part of the empty area.

(3) When using the closed space method, it should be noted that:

1 The partition wall of the masonry should be made of plastic materials (such as sand bags, etc.), and the brick wall can not be used. The length of the partition wall should not be less than 15 meters.

2 The surrounding rock must be allowed to collapse.

Forging is a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer (often a power hammer) or a die. Forging is often classified according to the temperature at which it is performed: cold forging (a type of cold working), warm forging, or hot forging (a type of hot working). For the latter two, the metal is heated, usually in a forge. Forged parts can range in weight from less than a kilogram to hundreds of metric tons. Forging has been done by smiths for millennia; the traditional products were kitchenware, hardware, hand tools, edged weapons, and jewellery. Since the Industrial Revolution, forged parts are widely used in mechanisms and machines wherever a component requires high strength; such forgings usually require further processing (such as machining) to achieve a finished part. Today, forging is a major worldwide industry

Main particulars

Forging is a kind of pressure of forging machinery for metal blank, make its produce plastic deformation in order to obtain certain mechanical properties, a certain shape and size of forging processing method, forging, forging and stamping) of one of the two part. By forging can eliminate the metal smelting process of as-cast loose defects, such as optimizing the microstructure, at the same time because of the intact metal flow, forging generally better than that of the same material on the mechanical properties of the castings. Related mechanical load is high, the working conditions of severe important parts, in addition to a simpler shape rolling plate, profile or welding parts are available, use forging more.

Forging Parts

Forging Parts,Aluminum Forging,Brass Forging,Stainless Steel Forging Parts

Shinvast Industry Ltd , http://www.shinvastindustry.com