CN111687411A - Net pendant and manufacturing method thereof - Google Patents

Abstract

A net weight and a manufacturing method thereof are disclosed, wherein 0.06-0.15 part of graphite powder, 0.07-0.12 part of talcum powder and 100 parts of iron powder are mixed and stirred uniformly and then placed in a die, the mixed powder and the die are placed in a hydraulic machine for compression molding, the compression molding speed is 2-4 mm/s, the compression molding pressure is 18-25 MPa, the compression time is 1-3 s, the die is demolded after the compression molding, the demolded net weight is heated to 900-1100 ℃ and then is kept at the constant temperature for 40-45min, and the post-cooling molding is carried out.

Description

Net pendant and manufacturing method thereof

Technical Field

The invention relates to the field of manufacturing of net weights, in particular to a net weight and a manufacturing method thereof.

Background

The existing net weight is mainly manufactured by casting, the production process is more traditional, and the defects of long time consumption, complex process, low mechanization and automation degree and the like exist, for example, the raw materials are mostly pig iron or scrap iron in a common cast iron mode, the steps of casting, high-temperature melting, draining, casting, cooling, mold stripping, cutting, cleaning and the like are needed, the process is complex, and the finished products are irregular in defect.

In addition, the traditional manufacturing process has the problems of heavy pollution, high manufacturing cost and the like, substances such as carbon, sulfur and the like need to be combusted during high-temperature melting, so that very serious air pollution is caused, and serious noise pollution exists in links such as cleaning and cutting, so that the traditional manufacturing process is very environmentally-friendly. And the raw materials required by the traditional process are mostly finished metal substances, and the labor cost of each process is added, so that the finished product of the net sinker has high manufacturing cost.

Disclosure of Invention

The invention provides a net pendant and a manufacturing method thereof, aiming at solving the technical problems of complicated manufacturing process of net feet, low degree of mechanization and automation, high pollution, high cost and the like.

The object of the invention is achieved in the following way:

a net pendant is prepared from the following raw materials in parts by weight: 0.06-0.15 part of graphite powder, 0.07-0.12 part of talcum powder and 100 parts of iron powder.

The manufacturing method of the net pendant further comprises the following steps:

firstly, placing graphite powder, talcum powder and iron powder in a formula in a stirrer to be uniformly stirred for 20-30 min;

secondly, placing the uniformly mixed powder in a die, placing the powder and the die in a die-casting machine for die-casting molding, wherein the die-casting speed is 2-4 mm/s, the die-casting pressure is 18-25 MPa, the pressing time is 1-3 s, and demolding after die-casting molding;

and thirdly, uniformly heating the demoulded net weight to 900-1100 ℃, keeping the temperature for 40-45min, and cooling and forming.

The die casting machine is a YW32-315T three-beam four-column hydraulic machine.

Compared with the prior art, the invention has the advantages that the finished product net pendant is obtained by mixing the graphite powder, the talcum powder and the iron powder in certain parts by weight, then carrying out die-casting molding, heating, keeping constant temperature and cooling, and the invention has simple manufacturing process, no pollution, no noise, high automation degree, low cost and larger market potential.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

The invention provides a net pendant which comprises the following raw material components: the graphite powder, the talcum powder and the iron powder comprise the following components in parts by weight: 0.06-0.15 part of graphite powder, 0.07-0.12 part of talcum powder and 100 parts of iron powder. The raw materials are low in price and low in manufacturing cost, and as shown in figure 1, the invention also provides a manufacturing method of the net pendant, which comprises the following steps:

weighing each component according to the proportion of each component of the raw materials, and uniformly mixing;

secondly, placing the uniformly mixed powder into a die, placing the die and the powder into a YW32-315T three-beam four-column hydraulic press for press forming, and demolding after forming to obtain a formed net weight, wherein the net weight formed by powder die-casting has excellent dimensional accuracy;

and thirdly, uniformly heating the demoulded net weight to 900-1100 ℃, keeping the temperature for 40-45min, and cooling and forming to obtain the finished net weight.

The specific parameters of the three-beam four-column hydraulic press are shown in table 1.

The following is further illustrated with reference to specific examples:

example 1

Firstly, sequentially adding 0.06 part of graphite powder, 0.07 part of talcum powder and 100 parts of iron powder into a stirrer, and stirring for 20min to obtain uniformly mixed powder;

then, placing the mixed powder into a die-casting die, placing the die-casting die and the powder in the die into a YW32-315T three-beam four-column hydraulic press for compression molding, wherein the die-casting pressure is 18MPa, the compression speed is 4mm/s, the compression time is 1s, and removing the die after the die-casting molding to obtain a molding net weight;

and finally, uniformly heating the demoulded net weight to 900 ℃, keeping the temperature of the demoulded net weight constant at 900 ℃ for 45min, and cooling to obtain a finished net weight.

Example 2

Firstly, sequentially adding 0.08 part of graphite powder, 0.09 part of talcum powder and 100 parts of iron powder into a stirrer, and stirring for 25min to obtain uniformly mixed powder;

then, placing the mixed powder into a die-casting die, placing the die-casting die and the powder in the die into a YW32-315T three-beam four-column hydraulic press for compression molding, wherein the die-casting pressure is 20MPa, the compression speed is 3mm/s, the compression time is 2s, and removing the die after molding to obtain a molding net pendant;

and finally, heating the demoulded net weight to 1000 ℃, keeping the temperature of the heated net weight at 1000 ℃ for 45min, and cooling to obtain a finished net weight.

Example 3

Firstly, sequentially adding 0.10 part of graphite powder, 0.10 part of talcum powder and 100 parts of iron powder into a stirrer, and stirring for 28min to obtain uniformly mixed powder;

then, placing the mixed powder into a die-casting die, placing the die-casting die and the powder in the die into a YW32-315T three-beam four-column hydraulic press for compression molding, wherein the die-casting pressure is 22MPa, the compression speed is 4mm/s, the compression time is 2s, and removing the die after molding to obtain a molding net pendant;

and finally, heating the demoulded net weight to 1100 ℃, keeping the temperature of the demoulded net weight constant at 1100 ℃ for 45min, and cooling to obtain the finished net weight.

Example 4

Firstly, sequentially adding 0.15 part of graphite powder, 0.12 part of talcum powder and 100 parts of iron powder into a stirrer, and stirring for 30min to obtain uniformly mixed powder;

then, placing the mixed powder into a die-casting die, placing the die-casting die and the powder in the die into a YW32-315T three-beam four-column hydraulic press for compression molding, wherein the die-casting pressure is 25MPa, the compression speed is 2mm/s, the compression time is 3s, and removing the die after molding to obtain a molding net pendant;

and finally, heating the demoulded net weight to 1100 ℃, keeping the temperature of the demoulded net weight constant at 1100 ℃ for 45min, and cooling to obtain a finished net weight.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (3)

1. A net weight, its characterized in that: the feed is prepared from the following raw materials in parts by weight: 0.06-0.15 part of graphite powder, 0.07-0.12 part of talcum powder and 100 parts of iron powder.

2. The method of manufacturing a net weight of claim 1, wherein: the method comprises the following steps:

firstly, placing graphite powder, talcum powder and iron powder in a stirrer according to a formula, and stirring uniformly for 20-30 min;

secondly, placing the uniformly mixed powder in a die, placing the powder and the die in a die-casting machine for die-casting molding, wherein the die-casting speed is 2-4 mm/s, the die-casting pressure is 18-25 MPa, the pressing time is 1-3 s, and demolding after die-casting molding;

and thirdly, uniformly heating the demoulded net weight to 900-1100 ℃, keeping the temperature for 40-45min, and cooling and forming.

3. The method of manufacturing a net weight of claim 2, wherein: the die casting machine is a YW32-315T three-beam four-column hydraulic machine.

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