阅读说明：本技术 一种高强度水泵导流壳的制备方法 (Preparation method of high-strength water pump diversion shell ) 是由 李坤 于 2019-08-23 设计创作，主要内容包括：本发明公开了一种高强度水泵导流壳的制备方法,其特征在于,包括以下步骤：(一)、准备熔炼钢水的材料,将导流壳各化学成分按重量份数称取所需原料,熔化后进行熔炼；(二)、设计导流壳,制作3维模型,进行模流分析,确定浇口、冷却系统等；(三)、制作浇铸模具；(四)、将熔炼后的钢水倒入模具中,静置,随模具缓慢冷却,待冷却到室温后,开模,取出胚体；(五)、按照设计要求对胚体进行粗加工；(六)、对粗加工后的胚体进行渗碳处理；(七)、进行表面淬火处理；(八)、进行精加工；(九)、抛光。(The invention discloses a preparation method of a high-strength water pump diversion shell, which is characterized by comprising the following steps of: preparing a molten steel smelting material, weighing required raw materials of each chemical component of the guide shell according to the weight part, and smelting after melting; designing a diversion shell, manufacturing a 3-dimensional model, performing mold flow analysis, and determining a pouring gate, a cooling system and the like; thirdly, manufacturing a casting mold; pouring the smelted molten steel into a mold, standing, slowly cooling along with the mold, opening the mold after cooling to room temperature, and taking out the blank; fifthly, roughly processing the blank according to the design requirement; (VI), performing carburizing treatment on the blank after rough machining; (VII), carrying out surface quenching treatment; (eighth), carrying out finish machining; and (ninthly) polishing.)

1. The preparation method of the high-strength water pump guide shell is characterized by comprising the following steps of: preparing a molten steel smelting material, weighing required raw materials of each chemical component of the guide shell according to the weight part, and smelting after melting; designing a diversion shell, manufacturing a 3-dimensional model, performing mold flow analysis, and determining a pouring gate, a cooling system and the like; thirdly, manufacturing a casting mold; pouring the smelted molten steel into a mold, standing, slowly cooling along with the mold, opening the mold after cooling to room temperature, and taking out the blank; fifthly, roughly processing the blank according to the design requirement; (VI), performing carburizing treatment on the blank after rough machining; (VII), carrying out surface quenching treatment; (eighth), carrying out finish machining; and (ninthly) polishing.

2. The preparation method of the guide shell of the high-strength water pump according to claim 1, wherein the guide shell in the step (one) comprises the following components in parts by weight: 100 portions of iron ion 140, 2 to 5 portions of aluminum, 6 to 10 portions of carbon, 0.2 to 0.5 portion of niobium, 0.1 to 0.5 portion of potassium, 0.2 to 0.5 portion of zinc and 0.1 to 0.6 portion of zirconium.

3. The method for preparing the guide shell of the high-strength water pump according to claim 1, wherein a machining allowance is reserved for subsequent machining when the mold is designed in the second step, and the reserved machining allowance is 4mm-6 mm.

4. The preparation method of the high-strength water pump guide shell according to claim 1, wherein the rough milling allowance processing amount in the step (five) is 2mm-3 mm.

5. The preparation method of the high-strength water pump guide shell according to claim 1, wherein the carburizing temperature in the step (seven) is 920-950 ℃, the temperature is kept for 3-5h, and the water pump guide shell is cooled along with the furnace.

6. The preparation method of the high-strength water pump guide shell according to claim 1, wherein the quenching temperature in the step (eight) is 800-850 ℃, the temperature is kept for 3-5h, and furnace cooling is carried out.

7. The method for preparing the guide shell of the high-strength water pump as claimed in claim 6, wherein the cooling rate in the step (eight) is 90-95 ℃/h.

Technical Field

The invention relates to the field of guide shells, in particular to a preparation method of a high-strength water pump guide shell.

Background

When mining, a water pump is needed; the guide shell is an important component of the water pump; during mining, collision easily occurs, and the environment of exploitation is abominable, and the water pump collides at practical in-process, appears damaging easily, and damage has increased the cost of production equally easily to inside blower inlet casing because hardness is not high.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a preparation method of a high-strength water pump diversion shell, which is simple.

In order to achieve the above object, the present invention adopts the following technical solutions:

the preparation method of the high-strength water pump guide shell is characterized by comprising the following steps of: preparing a molten steel smelting material, weighing required raw materials of each chemical component of the guide shell according to the weight part, and smelting after melting; designing a diversion shell, manufacturing a 3-dimensional model, performing mold flow analysis, and determining a pouring gate, a cooling system and the like; thirdly, manufacturing a casting mold; pouring the smelted molten steel into a mold, standing, slowly cooling along with the mold, opening the mold after cooling to room temperature, and taking out the blank; fifthly, roughly processing the blank according to the design requirement; (VI), performing carburizing treatment on the blank after rough machining; (VII), carrying out surface quenching treatment; (eighth), carrying out finish machining; and (ninthly) polishing.

Preferably, the guide shell in the step (one) comprises the following components in parts by weight: 100 portions of iron ion 140, 2 to 5 portions of aluminum, 6 to 10 portions of carbon, 0.2 to 0.5 portion of niobium, 0.1 to 0.5 portion of potassium, 0.2 to 0.5 portion of zinc and 0.1 to 0.6 portion of zirconium.

Preferably, a machining allowance is reserved for subsequent machining when the die is designed in the step (II), and the reserved machining allowance is 4-6 mm, so that subsequent machining is facilitated.

More preferably, the amount of the rough milling reserved machining in the step (five) is 2mm-3mm, so that the deformation amount provided by the subsequent surface heat treatment is prevented, and the precision of the guide shell is ensured.

Further preferably, the temperature of carburizing in the step (seven) is 920-950 ℃, the temperature is kept for 3-5h, furnace cooling is carried out, the carburizing efficiency is improved, and the strength of the guide shell is increased.

Specifically, the quenching temperature in the step (eight) is 800-850 ℃, the temperature is kept for 3-5h, the cooling is carried out along with the furnace, and the surface hardness of the guide shell is improved.

Still preferably, the cooling rate in the step (eight) is 90-95 ℃/h, and the quenching effect is improved.

The invention has the advantages that: the preparation method is simple, the materials are easy to obtain, the production and the processing are convenient, and the strength of the guide shell can be effectively improved; the machining allowance is reserved through the die, so that the subsequent machining is facilitated; the machining allowance is reserved during rough machining, deformation of subsequent heat treatment is prevented, and the accuracy of the guide shell is guaranteed while the strength of the guide shell is improved.

Detailed Description

The following specific examples are intended to illustrate the invention.