Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cylinder sleeve casting technology

A casting process and cylinder liner technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems that the precision of castings cannot be effectively guaranteed, the shape of graphite cannot meet the requirements, and the hardness of finished castings is not enough, so as to shorten the production cycle. , enhanced wear resistance, and high yield

Inactive Publication Date: 2016-10-12
娄土岭
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Casting is an ancient manufacturing method. With the development of industrial technology, the quality of cast large castings directly affects the quality of products. Therefore, casting occupies an important position in the machinery manufacturing industry. The current casting process generally includes molding, pouring , cooling and sand shakeout, the role of molding sand in foundry production is extremely important. Ordinary molding sand is mainly composed of raw sand, binder, water and coal powder, etc., which often cannot meet the requirements for molding sand mentioned above. , The casting waste caused by poor quality of molding sand accounts for about 30-50% of the total casting waste. The hardness of the finished casting is not enough. The engine is a common mechanical component. At present, with the increasingly scarce energy and raw materials, the demand for the engine is developing in the direction of high power and small volume. The cylinder is the core part of the engine, and it is the space for gas compression, combustion and expansion. It is the trajectory guided by the piston movement, so it has high requirements on the mechanical properties of the cylinder liner. At the same time, due to the increasingly stringent environmental protection requirements, energy saving and emission reduction have become a key research topic in the engine industry. The traditional concept of cylinder liner materials and casting processes cannot meet new technologies. requirements, the metallographic structure and graphite form of the cylinder liner cannot meet the requirements, the cylinder liner has low strength, poor wear resistance, short service life, and poor processing performance. Therefore, the design of a process is reasonable, raw materials are saved, pouring is uniform, and the operation is simple. , Stable work, high production efficiency, high product qualification rate, and good molding quality The cylinder liner casting process is very necessary, and it plays an important role in improving the production efficiency and service life of the cylinder liner

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The technical solution of the present invention is: a cylinder liner casting process, the process includes the following steps:

[0021] Step 1: Sand mixing, using resin sand as raw material, configuring casting sand according to the proportion, using dry clay sand to shape with a vibration molding machine, and making molding according to requirements to make a sand box;

[0022] Step 2: Mold making, making the cylinder liner inner mold casting mold and outer mold casting mold according to the size and shape of the cylinder liner, placing the inner mold casting mold inside the outer mold casting mold, and assembling to form a double-layer mold , placing the double-layer mold inside the sand box described in step 1;

[0023] Step 3: Smelting, configuring raw materials according to a certain ratio, heating the raw materials in an electric furnace to the melting temperature, and when the temperature in the melting furnace reaches 1300-1400°C, adding an inoculant for smelti...

Embodiment 2

[0036] The technical solution of the present invention is: a cylinder liner casting process, the process includes the following steps:

[0037] Step 1: Sand mixing, using resin sand as raw material, configuring casting sand according to the proportion, using dry clay sand to shape with a vibration molding machine, and making molding according to requirements to make a sand box;

[0038] Step 2: Mold making, making the cylinder liner inner mold casting mold and outer mold casting mold according to the size and shape of the cylinder liner, placing the inner mold casting mold inside the outer mold casting mold, and assembling to form a double-layer mold , placing the double-layer mold inside the sand box described in step 1;

[0039] Step 3: Smelting, configuring raw materials according to a certain ratio, heating the raw materials in an electric furnace to the melting temperature, when the temperature in the melting furnace reaches 1300-1400 °C, adding an inoculant for melting, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a casting process of a cylinder liner. The process comprises the following steps: mixing sand, using resin sand as a raw material, and distributing molding sand for casting according to the proportion; making a mold, making a cylinder liner inner mold casting according to the size and shape of the cylinder liner Mold and outer mold casting mold, the inner mold casting mold is placed inside the outer mold casting mold, assembled to form a double-layer mold; melting, raw materials are configured according to a certain ratio, and the raw materials are heated in an electric furnace to Melting temperature, adding inoculants for smelting; pouring, pouring the molten iron obtained in step 3 into the inner sand mold of the double-layer mold described in step 2; cooling to normal temperature, opening the mold box, taking out the formed cylinder liner, and using a shot blasting machine Clean the surface of the cylinder liner and perform polishing treatment and surface strengthening treatment; it has the advantages of reasonable process, saving raw materials, cost saving, simple operation, stable work, high production efficiency, high product qualification rate and good molding quality.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a casting process of a cylinder liner. Background technique [0002] Casting is an ancient manufacturing method. With the development of industrial technology, the quality of cast large castings directly affects the quality of products. Therefore, casting occupies an important position in the machinery manufacturing industry. The current casting process generally includes molding, pouring , cooling and sand shakeout, the role of molding sand in foundry production is extremely important. Ordinary molding sand is mainly composed of raw sand, binder, water and coal powder, etc., which often cannot meet the requirements for molding sand mentioned above. , The casting waste caused by poor quality of molding sand accounts for about 30-50% of the total casting waste. The hardness of the finished casting is not enough. The engine is a common mechanical component. At present,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22C9/24B22C15/10B22C1/00C22C37/10C22C33/08
CPCB22C9/24B22C1/00B22C15/10C22C33/08C22C37/10
Inventor 娄土岭
Owner 娄土岭
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More