阅读说明：本技术 一种醪液泵新型材料 (Novel material for mash pump ) 是由 徐忠章 薛信财 于 2020-04-27 设计创作，主要内容包括：本发明公开了一种醪液泵新型材料,该醪液泵新型材料的化学成分百分比含量为：C：0.45-0.55wt％,Ni：4.0-6.0wt％,Cr：17.0--09.0wt％,Mo：1.9--2.1wt％,Co：0.4--0.6wt％,P：≤0.03wt％,S：≤0.03wt％,余量为Fe,本发明其在降低成本的基础上,极大的提升了醪液泵的耐磨性以及耐腐蚀性,提高了醪液泵的使用寿命,提高经济效益。(The invention discloses a novel material of a mash pump, which comprises the following chemical components in percentage by weight: c: 0.45-0.55 wt%, Ni: 4.0-6.0 wt%, Cr: 17.0 to 09.0 wt%, Mo: 1.9-2.1 wt%, Co: 0.4 to 0.6 wt%, P: less than or equal to 0.03 wt%, S: the invention greatly improves the wear resistance and corrosion resistance of the mash pump, prolongs the service life of the mash pump and improves the economic benefit on the basis of reducing the cost.)

1. A novel material of a mash pump is characterized in that: the novel material of the mash pump comprises the following chemical components in percentage by weight: c: 0.45-0.55 wt%, Ni: 4.0-6.0 wt%, Cr: 17.0 to 09.0 wt%, Mo: 1.9-2.1 wt%, Co: 0.4 to 0.6 wt%, P: less than or equal to 0.03 wt%, S: less than or equal to 0.03wt percent, and the balance being Fe.

2. The novel mash pump material of claim 1, wherein: the novel material of the mash pump comprises the following chemical components in percentage: c: 0.5 wt%, Ni: 5.0 wt%, Cr: 13.0 wt%, Mo: 2.0 wt%, Co: 0.5 wt%, P: 0.01 wt%, S: 0.01 wt%, the balance being Fe.

Technical Field

The invention relates to the technical field of pump materials, in particular to a novel material for a mash pump.

Background

The mash pump is mainly used for obtaining liquid (the liquid comprises a fermentation product, a fermentation culture solution and some intermediate products) after fermentation, and mainly refers to a delivery pump of waste residue or waste liquid left after raw materials are fermented in the fermentation industry.

The currently used mash pump preparation materials are mainly divided into two types, one is a common carbon steel material; the other is stainless steel material. No matter the mash pump that ordinary carbon steel made is from wearability or corrosion resistance, its performance is all relatively poor, and life is shorter, and does not conform to relevant food hygiene requirement, and the mash pump that stainless steel material made all has better promotion for its wearability and corrosion resistance of the mash pump that ordinary carbon steel made, and average life has also reached about 2 times of carbon steel mash pump, but its cost of manufacture is higher, whole cost is equivalent to 4 ~ 5 times of carbon steel mash pump, therefore economic benefits is poor.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, the novel material for the mash pump is provided, and on the basis of reducing cost, the wear resistance and the corrosion resistance of the mash pump are greatly improved, the service life of the mash pump is prolonged, and the economic benefit is improved.

(II) technical scheme

The invention is realized by the following technical scheme: the invention provides a novel material of a mash pump, which comprises the following chemical components in percentage by weight: c: 0.45-0.55 wt%, Ni: 4.0-6.0 wt%, Cr: 17.0 to 09.0 wt%, Mo: 1.9-2.1 wt%, Co: 0.4 to 0.6 wt%, P: less than or equal to 0.03 wt%, S: less than or equal to 0.03wt percent, and the balance being Fe.

Further, the novel material of the mash pump comprises the following chemical components in percentage by weight: c: 0.5 wt%, Ni: 5.0 wt%, Cr: 13.0 wt%, Mo: 2.0 wt%, Co: 0.5 wt%, P: 0.01 wt%, S: 0.01 wt%, the balance being Fe.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

compared with the existing stainless steel mash pump, the novel material for the mash pump reduces the nickel content, increases the chemical components of molybdenum and cobalt, improves the corrosion resistance and the wear resistance of the mash pump, prolongs the service life of the mash pump and improves the mechanical property of a pump body on the basis of not increasing the cost compared with the stainless steel material, has better economic benefit, and is particularly suitable for conveying mash such as cassava, rice and the like.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

Preparing a novel material of a mash pump, wherein the novel material of the mash pump comprises the following chemical components in percentage by weight: c: 0.50 wt%, Ni: 4.0 wt%, Cr: 17.0 wt%, Mo: 1.9 wt%, Co: 0.4 wt%, P: 0.02 wt%, S: 0.02 wt%, the balance being Fe.

After the preparation, a sample was taken and the mechanical properties of the novel material were determined as in example 1 of table 1.

Example 2

Preparing a novel material of a mash pump, wherein the novel material of the mash pump comprises the following chemical components in percentage by weight: c: 0.50 wt%, Ni: 5.0 wt%, Cr: 13.0 wt%, Mo: 2.0 wt%, Co: 0.5 wt%, P: 0.01 wt%, S: 0.01 wt%, the balance being Fe.

After the preparation, a sample was taken and the mechanical properties of the novel material were determined as in example 2 of Table 1.

Example 3

Preparing a novel material of a mash pump, wherein the novel material of the mash pump comprises the following chemical components in percentage by weight: c: 0.55 wt%, Ni: 6.0 wt%, Cr: 09.0 wt%, Mo: 2.1 wt%, Co: 0.6 wt%, P: 0.03 wt%, S: 0.03 wt%, the balance being Fe.

After the preparation, a sample was taken and the mechanical properties of the novel material were determined as in example 3 of Table 1.

In addition, the mechanical property data measured by the mash pump made of carbon steel and the mash pump made of stainless steel at present are taken as comparison references, and the specific data are shown in the carbon steel and the stainless steel in the table 1. The carbon steel mainly contains Fe with the carbon content of 0.8-1.2 wt%, while the stainless steel mainly contains Fe with the following contents of other elements: c: 0.30-0.80 wt%; ni: 9.0-11.0 wt%, Cr: 18.0-20.0 wt%.

Table 1 shows the mechanical properties and hardness test results of examples 1 to 3 of the present invention and carbon steel and stainless steel materials.

Name of Material	High tensile strengthDegree (MPa)	Yield strength (MPa)	Hardness of	Impact force (J/cm2)
					Carbon steel	235	235	35-39	18
Stainless steel	520	205	28-34	20
					Example 1	670	400	42	18
Example 2	670	410	43	18
					Example 3	650	415	44	18

TABLE 1

It can be seen from the above table 1 that the tensile strength, yield strength and hardness of the pump body of the mash pump prepared by the method are all higher than those of the pump body made of carbon steel and the pump body made of stainless steel, and the experimental data shows that the economic cost is well controlled and the corrosion resistance and wear resistance of the pump body material are also remarkably improved on the basis of remarkably reducing the nickel content of the material and simultaneously adding the chemical element molybdenum, and in addition, the hardness of the pump body is enhanced and the mash pump is super-wear resistant by adding the cobalt element, and when the mash pump is used conventionally, the service life of the mash pump made of carbon steel is not longer than 90 days, the service life of the mash pump made of stainless steel is between 120 and 180 days, while the mash pump prepared by the method has the service life of more than 360 days, the manufacturing cost is basically level with that of the mash pump made of stainless steel, and the mash pump made of stainless steel has better economic benefit.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.