Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of aluminum alloy material and its low-pressure casting method for replacing qt500 agricultural machinery hydraulic pump

A technology of aluminum alloy material and low pressure casting, applied in the field of aluminum alloy material and its preparation, can solve the problems of small displacement and maximum oil pressure not exceeding 20MPa, etc.

Active Publication Date: 2018-09-07
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the hydraulic pumps made of aluminum alloy materials have small displacement and the maximum oil pressure does not exceed 20MPa, which cannot meet the needs of large-scale mechanical equipment such as agricultural machinery. The agricultural machinery hydraulic pump made of aluminum alloy materials designed in this paper can meet the requirements The maximum oil pressure supply of 40MPa has good performance guarantee in low temperature and high temperature environment

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of aluminum alloy material and its low-pressure casting method for replacing qt500 agricultural machinery hydraulic pump
  • A kind of aluminum alloy material and its low-pressure casting method for replacing qt500 agricultural machinery hydraulic pump
  • A kind of aluminum alloy material and its low-pressure casting method for replacing qt500 agricultural machinery hydraulic pump

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0052] A preparation method of an aluminum alloy material replacing a QT500 agricultural machinery hydraulic pump, comprising the following steps:

[0053] (1) Within the scope of the aforementioned Lewis acid-base pair and element ratio, select a group of material combinations, determine the weight ratio, and calculate the weight of each required material according to the total amount of alloy to be prepared;

[0054] (2) Add aluminum ingots or molten aluminum into the smelting furnace, heat and keep it above 700°C;

[0055] (3) Add manganese Mn, cadmium Cd, copper Cu, strontium Sr and stir, add the selected Lewis acid-base pair combination, and stir evenly;

[0056] (4) carrying out in-furnace refining to above-mentioned alloy melt then;

[0057] (5) After refining, remove slag, let it stand, and take samples to analyze the chemical composition of the alloy, and adjust the chemical composition to the specified deviation range according to the analysis results; adjust the temp...

Embodiment 1

[0074] An aluminum alloy agricultural machinery hydraulic pump replacing QT500 and its low-pressure casting method

[0075] 1. Product parameters:

[0076] Maximum oil pressure MPa

Operating temperature

Output torque Nm

15～40

-40°～115°

572～1550

[0077] 2. Production process: Melt→pressurizing and filling→maintaining pressure→relieving pressure→cooling→opening mold and taking parts→cleaning, sawing→solid solution→aging;

[0078] 3. Alloy formula weight percentage (%)

[0079]

[0080] 4. Melt pouring temperature ≥ 700°C;

[0081] 5. Mold preheating temperature ≥ 200°C;

[0082] 6. Filling time ≥ 1s, filling (gas) pressure: ≥ 0.02MPa;

[0083] 7. Pressure holding time ≥ 30s, maintain (gas) pressure: ≥ 0.1MPa;

[0084] 8. Cooling time: ≥60s;

[0085] 9. Heat treatment: T6 (solution plus complete artificial aging);

[0086] 10. The microstructure index of the product: the metallographic structure is equiaxed grain, the average grain siz...

Embodiment 2

[0090] An aluminum alloy agricultural machinery hydraulic pump replacing QT500 and its low-pressure casting method

[0091] 1. Product parameters:

[0092] Maximum oil pressure MPa

Operating temperature

Output torque Nm

10～35

-60°～135°

540～1250

[0093] 2. Production process: Melt→pressurizing and filling→maintaining pressure→relieving pressure→cooling→opening mold and taking parts→cleaning, sawing→solid solution→aging;

[0094] 3. Alloy formula weight percentage (%)

[0095]

[0096] 4. Melt pouring temperature ≥ 700°C;

[0097] 5. Mold preheating temperature ≥ 200°C;

[0098] 6. Filling time ≥ 1s, filling (gas) pressure: ≥ 0.02MPa;

[0099] 7. Pressure holding time ≥ 30s, maintain (gas) pressure: ≥ 0.1MPa;

[0100] 8. Cooling time: ≥60s;

[0101] 9. Heat treatment: T6 (solution plus complete artificial aging);

[0102] 10. The microstructure index of the product: the metallographic structure is equiaxed crystal, the average grain s...

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

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an aluminum alloy material for replacing a QT500 agricultural machinery hydraulic pump. The aluminum alloy material is characterized by comprising the following main components in percentage by weight: 0.02-0.03% of strontium Sr, manganese Mn not more than 2%, 0.05-0.5% of cadmium Cd, 4.2-8.0% of copper Cu and Cu not less than 0.8 Mn+4.05%, and the balance of Al; and the Louis acid and alkali pair total quantity is 1%*10-4-2.0%.

Description

technical field [0001] The invention relates to an aluminum alloy material for replacing a QT500 agricultural machinery hydraulic pump and a preparation method thereof. Background technique [0002] Ductile iron (referred to as ductile iron) is one of the main materials used in the agricultural machinery industry. The reason lies in the low price, stable mechanical properties and physical indicators of ductile iron. [0003] The mechanical performance index and classification standard of ductile iron can be used as the benchmarking basis for innovative design and performance improvement of aluminum alloy materials; the current market pursues low carbon, intensification, high efficiency (high performance), and flexibility. It is a symbol of the industry's leap from traditional form to high-end form. [0004] In order to give full play to the superior characteristics of aluminum alloy series represented by "lightness", it must first make great progress in "strength", and at t...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/12C22C1/02B22D18/04C22F1/04
CPCB22D18/04C22C1/026C22C21/12C22F1/04
Inventor 车云张中可门三泉
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES