CN103495735A - Powder metallurgy method - Google Patents

Abstract

The invention belongs to the field of metallurgy, and particularly relates to a powder metallurgy method for metallurgy with iron fine powder as a raw material. The powder metallurgy method is characterized in that iron powder is extracted through the iron fine powder which is used as the raw material, and the main steps include ball milling, primary washing, primary magnetic separation, secondary washing, secondary magnetic separation and drying. The method is high in speed, simple in production process and easy to control. The iron fine powder is taken as the raw material, cost of the raw material is low, the purity of the iron fine powder obtained through the method is high, performance of the iron powder is good, and the method is widely used for making structural elements of high strength, steel structure hard alloy and the like.

Description

A kind of powder metallurgy process

Technical field

The invention belongs to field of metallurgy, relating in particular a kind of iron fine powder that adopts is that raw material carries out metallurgical powder metallurgy process.

Background technology

In prior art, the production of iron powder adopts reducing process, atomization, mechanical crushing method, electrolysis more, the operating process complexity of these metallurgical methods is loaded down with trivial details, production process is difficult control extremely, and the efficiency that produces iron powder in producing is not high, the iron powder purity of producing is lower, also have the non-ferrous metal impurity such as a large amount of copper, molybdenum in it, these valuable non-ferrous metals that iron powder can not be contained rationally utilize, or obtain the performance of the iron powder of these metals reductions, and adopt the metallurgical method cost of prior art higher.

Summary of the invention

The technical problem to be solved in the present invention is to provide the high powder metallurgy process of iron powder purity that a kind of operating process is simple, produce.

For solving the problems of the technologies described above, the invention provides a kind of powder metallurgy process, described powder metallurgy process is to utilize the iron fine powder to extract the method for iron powder for raw material, its key step is as follows,

A, ball milling, carry out ball-milling treatment by iron fine powder raw material through ball mill, makes iron fine powder integral body present uniform pulverulence, removes the impurity of the larger particles of the inside;

B, once cleaning, clean upper step through the iron fine powder process of ball-milling treatment, remove floating impurity;

C, a magnetic separation, will carry out magnetic separation by magnetic separator through the iron fine powder of once cleaning, and remove non iron impurity, obtain the crude iron fine powder;

D, secondary cleaning, carry out secondary cleaning by the above-mentioned fine powder of the crude iron through a magnetic separation, removes impurity;

E, secondary magnetic separation, through the secondary magnetic separation, remove non iron impurity by the above-mentioned crude iron fine powder through secondary cleaning, obtains smart iron powder;

F, oven dry, dried above-mentioned smart iron powder, and after drying, tiling is deposited.

Adopt the beneficial effect of technique scheme to be: the invention provides a kind of efficiently, the method for production process powder metallurgy simple and easy to control, the raw material that adopt in this powder metallurgy process are the iron fine powder, cost of material is lower, the smart iron powder purity obtained by this method is high, the essence iron powder functional, be widely used in doing high-intensity structural member, steel construction carbide alloy etc.

The specific embodiment

Below technical scheme of the present invention is described, so that those skilled in the art understand.

A kind of powder metallurgy process, described powder metallurgy process is to utilize the iron fine powder to extract the method for iron powder for raw material, its key step is as follows,

A, ball milling, carry out ball-milling treatment by iron fine powder raw material through ball mill, makes iron fine powder integral body present uniform pulverulence, removes the impurity of the larger particles of the inside;

B, once cleaning, clean upper step through the iron fine powder process of ball-milling treatment, remove floating impurity;

C, a magnetic separation, will carry out magnetic separation by magnetic separator through the iron fine powder of once cleaning, and remove non iron impurity, obtain the crude iron fine powder;

D, secondary cleaning, carry out secondary cleaning by the above-mentioned fine powder of the crude iron through a magnetic separation, removes impurity;

E, secondary magnetic separation, through the secondary magnetic separation, remove non iron impurity by the above-mentioned crude iron fine powder through secondary cleaning, obtains smart iron powder;

F, oven dry, dried above-mentioned smart iron powder, and after drying, tiling is deposited.

Above-mentioned invention is exemplarily described; obviously specific implementation of the present invention is not limited by aforesaid way; as long as this non-essential improvement that has adopted method design of the present invention and technical scheme to carry out; or without improving, the design of invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.

Claims (1)

1. a powder metallurgy process is characterized in that: described powder metallurgy process is to utilize the iron fine powder to extract the method for iron powder for raw material, and its key step is as follows,

A, ball milling, carry out ball-milling treatment by iron fine powder raw material through ball mill, makes iron fine powder integral body present uniform pulverulence, removes the impurity of the larger particles of the inside;

B, once cleaning, clean upper step through the iron fine powder process of ball-milling treatment, remove floating impurity;

C, a magnetic separation, will carry out magnetic separation by magnetic separator through the iron fine powder of once cleaning, and remove non iron impurity, obtain the crude iron fine powder;

D, secondary cleaning, carry out secondary cleaning by the above-mentioned fine powder of the crude iron through a magnetic separation, removes impurity;

E, secondary magnetic separation, through the secondary magnetic separation, remove non iron impurity by the above-mentioned crude iron fine powder through secondary cleaning, obtains smart iron powder;

F, oven dry, dried above-mentioned smart iron powder, and after drying, tiling is deposited.