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6015 results about "Forming processes" patented technology

Forming processes are particular manufacturing processes which make use of suitable stresses (like compression, tension, shear or combined stresses) which cause plastic deformation of the materials to produce required shapes. The main material used is metal due to the massive need for various products demanded by the public, nevertheless other compounds like plastic can be formed too due to a big market for plastic based products.

Method for forming film

The present invention relates to a method of forming a metal-nitride film onto a surface of an object to be processed in a processing container in which a vacuum can be created. The method of the invention includes: a step of continuously supplying an inert gas into a processing container set at a high film-forming temperature; and a step of intermittently supplying a metal-source gas into the processing container, during the step of continuously supplying the inert gas. During the step of intermittently supplying the metal-source gas, a nitrogen-including reduction gas is supplied into the processing container at the same time that the metal-source gas is supplied, during a supply term of the metal-source gas. The nitrogen-including reduction gas is also supplied into the processing container for a term shorter than a non-supply term of the metal-source gas, during the non-supply term of the metal-source gas. A film thickness of the metal-nitride film formed during the one supply term of the metal-source gas is not more than 60 nm. According to the invention, although the film-forming process is conducted at a relatively high temperature, a metal-nitride film can be deposited whose chlorine density is low, whose resistivity is low, and in which fewer cracks may be generated.

Simulating method of forming process of unconventional oil and gas reservoir hydraulic fracturing complex fracture net

The invention discloses a simulating method of the forming process of an unconventional oil and gas reservoir hydraulic fracturing complex fracture net. The method includes the steps of a, reestablishing natural fracture distribution, estimating the properties of natural fractures, obtaining rock mechanical information and stratum stress information of a stratum from log data or a geological model, and obtaining a data file related to the well factory construction process; b, inputting the obtained parameters in an established natural fractured reservoir fracturing model coupling a well cylinder, fractures and the stratum; c, conducting numerical value solving on the model to obtain after-fracturing information such as fracture forms, opening degree distribution and pressure intensity distribution; d, analyzing the fracturing effect through a model calculating result, and making a preparation for numerical value simulation of the later-period production process. The fractured reservoirfracturing numerical value simulating method coupling the well cylinder flowing, the fracture deformation expanding, the multi-state natural fractures and the flowing of fluid in the fractures can quantitatively analyze the form of the unconventional reservoir segmented volume fracture net and is an effectively means for evaluating and optimizing the fracturing scheme.

Laser additive manufacturing method and device of metal parts

ActiveCN103726049AMeet the requirements of high precision formingRealization of high-precision forming requirementsMetallic material coating processesSelective laser meltingManufacturing technology
The invention discloses a laser additive manufacturing method and a laser additive manufacturing device of metal parts. In the laser additive manufacturing method, a layered-manufactured profile-followed cylinder is used as a forming cylinder, namely before each metal part layer is manufactured, a layer of closed thin wall is manufactured, the formed cavity is used as the profile-followed cavity, the height of the profile-followed cavity is the same as that of the metal part layer to be manufactured, and the shape of the profile-followed cavity is adapted to that of the metal part layer to be manufactured, so as to provide a plane reference and a cavity for laying powder; the layered-manufactured profile-followed cylinder is used, a scanning galvanometer is used for performing selective laser melting and forming, the metal part layers are manufactured layer by layer, layers of the profile-followed cavities are finally stacked to form the profile-followed cylinder, and the layers of metal parts are stacked to form metal parts. The laser additive manufacturing device comprises a laser galvanometer melting and forming device and a thin wall preparation device which alternatively work, so as to accomplish the selective laser melting and forming process. The method and the device keep the advantages of the selective laser melting (SLM) metal additive manufacturing technology, uses the profile-followed cylinder to break the limit of the conventional SLM device fixed-size forming cylinder, and thus achieving the high-precision manufacture of the large-size even over-sized parts.
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