Abstract: The present invention provides a 3D printer composition, a 3D printer filament using same, and a method for manufacturing a metal steel product by using the filament, the composition including: 10 wt % to 30 wt % of a polymer binder including 3.5 wt % to 10 wt % of polyacetal, 3.5 wt % to 10 wt % of a polyolefin elastomer, 2 wt % to 6 wt % of a plasticizer, and 1 wt % to 4 wt % of a lubricant; and 70 wt % to 90 wt % of a metal powder.

Abstract: The present invention relates to a binder composition for metal powder injection molding, and more specifically, to a binder composition for metal powder injection molding, which can be promptly debound, facilitates the setting of flow conditions in an injection process, and enables the minimization of poor debinding such as swelling, carbonization of low-molecular-weight binders, and other internal defects, during a debinding process. The binder composition for metal powder injection molding of the present invention contains 10 to 50 wt % of a high-viscosity polyoxymethylene polymer and 50 to 90 wt % of a low-viscosity polyoxymethylene polymer.

Abstract: A multi-chamber type heating unit to heat a blank includes: a lower housing unit; an intermediate housing unit installed in an upper portion of the lower housing unit; and an upper housing unit installed in an upper portion of the intermediate housing unit. A plurality of intermediate housings are stacked to form the intermediate housing unit, and a heating unit to heat a blank is installed in each of the intermediate housings. Moreover, the intermediate housings are formed in the shape in which upper and lower portions thereof are opened, and an opening is formed in the front for a door to be inserted thereinto, and door sealing units provided on the intermediate housing portion and provided to seal the door when the door is closed.

Abstract: Provided is a multi-chamber type heating unit which occupies a small installation space and can effectively perform a heating process of a blank. The multi-chamber type heating unit to heat a blank comprises: a lower housing unit; an intermediate housing unit installed in an upper portion of the lower housing unit; and an upper housing unit installed in an upper portion of the intermediate housing unit. A plurality of intermediate housings are stacked to form the intermediate housing unit, and a heating unit to heat a blank is installed in each of the intermediate housings. Moreover, the intermediate housings are formed in the shape in which upper and lower portions thereof are opened, and an opening is formed in the front for a door to be inserted thereinto.