阅读说明：本技术 一种用于生产液压法兰盘的铸造工艺 (Casting process for producing hydraulic flange plate ) 是由 高海全 刘国良 于 2020-12-18 设计创作，主要内容包括：本发明是一种用于生产液压法兰盘的铸造工艺,其步骤如下：(1)备料；(2)原料熔炼；(3)浇筑毛坯；(4)冷却脱模；(5)锻造；(6)精加工。本发明通过先制备毛坯,并对毛坯进行多次锻造,然后再进行精加工,使得生产出的法兰盘质量有保证,且生产工艺简单,工序安排合理,工作效率高。(The invention relates to a casting process for producing a hydraulic flange plate, which comprises the following steps: (1) preparing materials; (2) smelting raw materials; (3) pouring a blank; (4) cooling and demolding; (5) forging; (6) and (6) finishing. According to the invention, the blank is prepared, forged for multiple times and then finish machined, so that the quality of the produced flange plate is ensured, and the production process is simple, the process arrangement is reasonable, and the working efficiency is high.)

1. A casting process for producing a hydraulic flange plate is characterized by comprising the following steps:

(1) preparing materials: the components are as follows according to the weight percentage:

carbon: 2-2.5%, silicon: 1.8-3.6%, manganese: 4-6%, sulfur: 0.1-0.3%, phosphorus: 0.1-0.3%, chromium: 1-2.4%, nickel: 1.2-2.2%, copper: 1.5-2.5%, the rest is iron;

(2) smelting raw materials: putting the raw materials in the step (1) into a smelting furnace for smelting, and melting the raw materials into mixed liquid;

(3) pouring a blank: preheating a pouring mold, and pouring the molten liquid in the step (2) into the mold for molding;

(4) cooling and demolding: after pouring and forming, primarily cooling the mold for 6-8h at the temperature of 550-650 ℃, then secondarily cooling to room temperature, demolding, and turning the mold after demolding to remove obvious defects on the surface;

(5) forging: forging the blank formed in the step (4) for 2-4 times until the size of the forged blank is 0.8-1.5mm of the size of the finished product;

(6) finish machining: and (5) drilling the blank forged in the step (5), polishing the outer surface and the inner wall of the hole of the blank after drilling, and cleaning after polishing to obtain a finished product.

2. A casting process for producing a hydraulic flange according to claim 1, wherein the temperature of the smelting furnace in the step (2) is 1600-.

3. A casting process for producing a hydraulic flange plate according to claim 2, wherein the preheating temperature of the casting mold in the step (3) is 250-350 ℃.

4. A casting process for producing a hydraulic flange plate according to claim 3, wherein in the step (4), the primary cooling mode is air cooling, and the secondary cooling mode is water cooling.

5. A casting process for producing a hydraulic flange plate as claimed in claim 4, wherein the blank is heated to 1150-1200 ℃ during forging in the step (5) and is subjected to heat preservation for 8-14 min.

Technical Field

The invention relates to the technical field of flange plate processing, in particular to a casting process for producing a hydraulic flange plate.

Background

The flange is a part for connecting the shafts and is used for connecting pipe ends; there are also flanges on the inlet and outlet of the device for connection between two devices. The flange is of a plurality of types and is widely used on the hydraulic cylinder. The existing flange plate is complex in production process, most of the flange plates are directly processed by using the existing steel ingots, the quality is not easy to master, and the flange plate has internal defects frequently, so that the service life is influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a casting process for producing a hydraulic flange plate.

In order to achieve the purpose, the invention adopts the following technical scheme:

a casting process for producing a hydraulic flange plate comprises the following steps:

(1) preparing materials: the components are as follows according to the weight percentage:

carbon: 2-2.5%, silicon: 1.8-3.6%, manganese: 4-6%, sulfur: 0.1-0.3%, phosphorus: 0.1-0.3%, chromium: 1-2.4%, nickel: 1.2-2.2%, copper: 1.5-2.5%, the rest is iron;

(2) smelting raw materials: putting the raw materials in the step (1) into a smelting furnace for smelting, and melting the raw materials into mixed liquid;

(3) pouring a blank: preheating a pouring mold, and pouring the molten liquid in the step (2) into the mold for molding;

(4) cooling and demolding: after pouring and forming, primarily cooling the mold for 6-8h at the temperature of 550-650 ℃, then secondarily cooling to room temperature, demolding, and turning the mold after demolding to remove obvious defects on the surface;

(5) forging: forging the blank formed in the step (4) for 2-4 times until the size of the forged blank is 0.8-1.5mm of the size of the finished product;

(6) finish machining: and (5) drilling the blank forged in the step (5), polishing the outer surface and the inner wall of the hole of the blank after drilling, and cleaning after polishing to obtain a finished product.

In particular, the temperature of the smelting furnace in the step (2) is 1600-1700 ℃.

Particularly, the preheating temperature of the casting mold in the step (3) is 250-350 ℃.

Particularly, in the step (4), the primary cooling mode is air cooling, and the secondary cooling mode is water cooling.

Specifically, the blank is heated to 1150-1200 ℃ during forging in the step (5), and the temperature is kept for 8-14 min.

The invention has the beneficial effects that: according to the invention, the blank is prepared by adopting the raw materials, and is forged for multiple times and then is subjected to finish machining, so that the quality of the produced flange plate is ensured, and the production process is simple, the process arrangement is reasonable, and the working efficiency is high.

Detailed Description

The invention is further illustrated by the following examples:

example 1

A casting process for producing a hydraulic flange plate comprises the following steps:

(1) preparing materials: the components are as follows according to the weight percentage:

carbon: 2%, silicon: 1.8%, manganese: 4%, sulfur: 0.1%, phosphorus: 0.1%, chromium: 1%, nickel: 1.2%, copper: 1.5 percent of iron and 88.3 percent of iron;

(2) smelting raw materials: putting the raw materials in the step (1) into a smelting furnace for smelting, and melting the raw materials into mixed liquid;

(3) pouring a blank: preheating a pouring mold, and pouring the molten liquid in the step (2) into the mold for molding;

(4) cooling and demolding: after pouring and forming, primarily cooling the die for 6 hours at 550 ℃, then secondarily cooling the die to room temperature, demoulding, and turning the die after demoulding to remove obvious defects on the surface;

(5) forging: forging the blank formed in the step (4) for 2 times until the size of the forged blank is 0.8mm of the size of the finished product;

(6) finish machining: and (5) drilling the blank forged in the step (5), polishing the outer surface and the inner wall of the hole of the blank after drilling, and cleaning after polishing to obtain a finished product.

In particular, the temperature of the smelting furnace in the step (2) is 1600 ℃.

Particularly, the preheating temperature of the casting mold in the step (3) is 250 ℃.

Particularly, in the step (4), the primary cooling mode is air cooling, and the secondary cooling mode is water cooling.

Specifically, the blank is heated to 1150 ℃ during forging in the step (5), and the temperature is kept for 14 min.

Example 2

A casting process for producing a hydraulic flange plate comprises the following steps:

(1) preparing materials: the components are as follows according to the weight percentage:

carbon: 2.5%, silicon: 3.6%, manganese: 6% and sulfur: 0.3%, phosphorus: 0.3%, chromium: 2.4%, nickel: 2.2%, copper: 2.5 percent of iron and 80.2 percent of iron;

(2) smelting raw materials: putting the raw materials in the step (1) into a smelting furnace for smelting, and melting the raw materials into mixed liquid;

(3) pouring a blank: preheating a pouring mold, and pouring the molten liquid in the step (2) into the mold for molding;

(4) cooling and demolding: after pouring and forming, primarily cooling the die for 8 hours at 650 ℃, then secondarily cooling the die to room temperature, demoulding, and turning the die after demoulding to remove obvious defects on the surface;

(5) forging: forging the blank formed in the step (4) for 4 times until the size of the forged blank is 1.5mm of the size of the finished product;

(6) finish machining: and (5) drilling the blank forged in the step (5), polishing the outer surface and the inner wall of the hole of the blank after drilling, and cleaning after polishing to obtain a finished product.

In particular, the temperature of the smelting furnace in the step (2) is 1700 ℃.

In particular, the preheating temperature of the casting mold in the step (3) is 350 ℃.

Particularly, in the step (4), the primary cooling mode is air cooling, and the secondary cooling mode is water cooling.

Specifically, the blank is heated to 1200 ℃ during forging in the step (5), and the temperature is kept for 8 min.

Example 3

A casting process for producing a hydraulic flange plate comprises the following steps:

(1) preparing materials: the components are as follows according to the weight percentage:

carbon: 2.25%, silicon: 2.7%, manganese: 5%, sulfur: 0.2%, phosphorus: 0.2%, chromium: 1.7%, nickel: 1.7%, copper: 2%, iron 84.25%;

(2) smelting raw materials: putting the raw materials in the step (1) into a smelting furnace for smelting, and melting the raw materials into mixed liquid;

(3) pouring a blank: preheating a pouring mold, and pouring the molten liquid in the step (2) into the mold for molding;

(4) cooling and demolding: after pouring and forming, primarily cooling the mold for 7 hours at 600 ℃, then secondarily cooling to room temperature, demolding, and turning the mold after demolding to remove obvious defects on the surface;

(5) forging: forging the blank formed in the step (4) for 3 times until the size of the forged blank is 1.2mm of the size of the finished product;

(6) finish machining: and (5) drilling the blank forged in the step (5), polishing the outer surface and the inner wall of the hole of the blank after drilling, and cleaning after polishing to obtain a finished product.

In particular, the temperature of the smelting furnace in the step (2) is 1650 ℃.

Particularly, the preheating temperature of the casting mold in the step (3) is 300 ℃.

Particularly, in the step (4), the primary cooling mode is air cooling, and the secondary cooling mode is water cooling.

Specifically, the blank is heated to 1175 ℃ during forging in the step (5), and the temperature is kept for 11 min.

The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various modifications, which may be made by the methods and technical solutions of the invention, or may be applied to other applications without modification.