CN110566316A - copper alloy engine oil pan for auto-parts - Google Patents

Abstract

the utility model provides a copper alloy engine oil pan, includes the oil pan body, and the oil pan body has the rectangular section cell body, is provided with the installation edge on cell body upper portion, and the internal surface coating of rectangular channel has zirconia system coating, and the outer surface coating of rectangular channel is high temperature resistant coating, forms organic coating to oil pan cell body surface and effectively improves resistant time anti-soil performance.

Description

Copper alloy engine oil pan for auto-parts

Technical Field

The invention relates to a copper alloy engine oil pan for automobile parts, and belongs to the technical field of automobile parts.

background

The oil pan is positioned at the lower part of the engine and can be disassembled and assembled. The traditional oil pan is mostly formed by stamping a thin steel plate, but the traditional oil pan has the following defects or shortcomings: leakage often occurs; the oil consumption is increased, the energy is wasted, and the operation cost is increased; mechanical part abrasion is added, the technical state is deteriorated, and the power is reduced; the service life of mechanical parts is shortened, and the repair cost is increased; affecting the appearance of the engine, the cleanliness of the machine and the starting performance.

disclosure of Invention

The invention provides a copper alloy engine oil pan with simple process, low cost and good corrosion resistance aiming at the problems. A copper alloy engine oil pan comprises an oil pan body, wherein the oil pan body is provided with a groove body with a rectangular cross section, the upper part of the groove body is provided with a mounting edge, the inner surface of the rectangular groove body is coated with a zirconia coating, the outer surface of the rectangular groove body is coated with a high-temperature resistant coating,

the method is characterized in that: the oil pan body comprises the following chemical components in percentage by weight: 3.6% of Zn, Mg: 1.8%, Si: 7.6%, Ni: 1.7%, W: 0.78%, Nb: 0.38%, Cr: 0.19%, V: 0.16%, Al: 0.087%, Sn: 0.058%, Ta: 0.019% >, Ce: 0.017%, and the balance of Cu and inevitable impurities;

The oil pan preparation method comprises the following steps: the method comprises the following steps: preparing alloy according to the proportion, smelting and pouring raw materials, demoulding, and performing heat treatment on the obtained cast ingot: firstly, heating the cast ingot, raising the temperature to 500 ℃, raising the temperature at a rate of 40 ℃/h, preserving heat for 2 h, then lowering the temperature to 400 ℃, lowering the temperature at a rate of 100 ℃/h, preserving heat for 5 h, then raising the temperature to 450 ℃, raising the temperature at a rate of 25 ℃/h, preserving heat for 4 h, then lowering the temperature to 300 ℃ again, lowering the temperature at a rate of 50 ℃/h, preserving heat for 3 h, then lowering the temperature to 200 ℃ again, lowering the temperature at a rate of 40 ℃/h, preserving heat for 4 h, then air-cooling to room temperature,

forging: heating the cast ingot to 800 ℃, preserving heat for 4 hours, then forging, wherein the forging starting temperature is 800 ℃, the cast ingot is vertically upset, the stop time of a press is 35mm each time, the final forging temperature is 700 ℃,

rolling: heating the forged blank, wherein the heating temperature is 750 ℃, cogging rolling adopts 8 passes, the relative reduction rate of the pass is controlled to be 12-15% during cogging, the rolling speed is controlled to be 10mm/s, the slab is subjected to heat preservation at 600 ℃ after cogging, the heat preservation time is 5 hours, then the temperature is raised to 700 ℃, the heat preservation time is controlled to be 4 hours, then hot rolling is carried out on the slab, the hot rolling is carried out for 12 passes, the relative reduction rate of the initial pass is 8%, the relative reduction rate of other passes is controlled to be 10-15%, the rolling speed is controlled to be 65 mm/s, and the final rolling temperature is 550 ℃; the thickness of the plate is 2.5mm,

Stamping: heating the plate to 600 ℃ for stamping, cooling the plate to room temperature after stamping to obtain an oil pan body,

And (3) heat treatment: heating the oil pan body to 550 ℃, preserving heat for 3 hours, then cooling to 450 ℃, cooling at the rate of 30 ℃/hour, preserving heat for 3 hours, then cooling again to 250 ℃, cooling at the rate of 60 ℃/hour, preserving heat for 1 hour, then air-cooling to room temperature,

sand blasting and coarsening: carrying out sand blasting and coarsening treatment on the inner surface and the outer surface of a rectangular groove body in the oil pan body, wherein sand grains are quartz sand, the size of the sand grains is 20 meshes, the sand blasting pressure is 0.4MPa, the distance between a sand blasting gun and a workpiece is 40 mm, and compressed air is used for blowing clean after sand blasting;

coating the inner surface: coating a zirconia coating on the inner surface of the oil pan groove body; the zirconia coating is formed by coating on the inner surface of the tank body of the oil bottom shell, and the zirconia material layer comprises the following components in percentage by weight: 66 parts of zirconium oxide, 37 parts of chromium oxide and 19 parts of tungsten carbide, heating the coated oil pan to 500 ℃, heating at a heating rate of 50 ℃/h, preserving heat for 2 h, then cooling to 400 ℃, cooling at a cooling rate of 20 ℃/h, preserving heat for 1 h, then cooling again to 250 ℃, cooling at a cooling rate of 40 ℃/h, preserving heat for 5 h, then air-cooling to room temperature,

coating the outer surface: coating a high-temperature-resistant coating on the outer surface of the oil pan body, wherein the coating comprises the following components in parts by weight: 100 parts of epoxy modified organic silicon resin, 14 parts of nano-grade aluminum oxide, 14 parts of silicon dioxide, 10 parts of mica powder, 20 parts of sodium silicate, 5 parts of ethylenediamine, 3 parts of boron oxide, 1 part of zinc phosphate and 38 parts of ethanol to obtain the final oil pan.

Compared with the prior art, the beneficial effects of the invention contents are as follows: 1) the copper alloy has simple components; 2) because the inner surface of the oil bottom shell tank body is contacted with grease for a long time, the inner surface of the oil bottom shell tank body can be damaged, and the corrosion resistance is improved by coating the zirconia coating on the inner surface of the copper alloy oil bottom shell tank body. 4) An organic coating is formed on the outer surface of the oil pan body, so that weather resistance and pollution resistance are effectively improved.

drawings

fig. 1 is a sectional view of an oil pan body.

Detailed Description

in order to more clearly understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described in detail.

as shown in fig. 1, the oil pan body is a cross-sectional view of the oil pan body, the oil pan body is provided with a groove body with a rectangular cross section, a mounting edge 3 is arranged at the upper part of the groove body, the inner surface 1 of the rectangular groove body is coated with a zirconia coating (not shown), and the outer surface 2 of the rectangular groove body is coated with a high-temperature resistant coating (not shown).

a copper alloy engine oil pan comprises an oil pan body, wherein the oil pan body is provided with a groove body with a rectangular cross section, the upper part of the groove body is provided with a mounting edge, the inner surface of the rectangular groove body is coated with a zirconia coating, the outer surface of the rectangular groove body is coated with a high-temperature resistant coating,

the method is characterized in that: the oil pan body comprises the following chemical components in percentage by weight: 3.6% of Zn, Mg: 1.8%, Si: 7.6%, Ni: 1.7%, W: 0.78%, Nb: 0.38%, Cr: 0.19%, V: 0.16%, Al: 0.087%, Sn: 0.058%, Ta: 0.019% >, Ce: 0.017%, and the balance of Cu and inevitable impurities;

the oil pan preparation method comprises the following steps: the method comprises the following steps: preparing alloy according to the proportion, smelting and pouring raw materials, demoulding, and carrying out heat treatment on the obtained cast ingot: firstly, heating the cast ingot, raising the temperature to 500 ℃, raising the temperature at a rate of 40 ℃/h, preserving heat for 2 h, then lowering the temperature to 400 ℃, lowering the temperature at a rate of 100 ℃/h, preserving heat for 5 h, then raising the temperature to 450 ℃, raising the temperature at a rate of 25 ℃/h, preserving heat for 4 h, then lowering the temperature to 300 ℃ again, lowering the temperature at a rate of 50 ℃/h, preserving heat for 3 h, then lowering the temperature to 200 ℃ again, lowering the temperature at a rate of 40 ℃/h, preserving heat for 4 h, then air-cooling to room temperature,

Forging: heating the cast ingot to 800 ℃, preserving heat for 4 hours, then forging, wherein the forging starting temperature is 800 ℃, the cast ingot is vertically upset, the stop time of a press is 35mm each time, the final forging temperature is 700 ℃,

Rolling: heating the forged blank, wherein the heating temperature is 750 ℃, cogging rolling adopts 8 passes, the relative reduction rate of the pass is controlled to be 12-15% during cogging, the rolling speed is controlled to be 10mm/s, the slab is subjected to heat preservation at 600 ℃ for 5 hours after cogging, then the temperature is raised to 700 ℃, the heat preservation time is controlled to be 4 hours, then hot rolling is carried out on the slab, the relative reduction rate of the initial pass is 8%, the relative reduction rate of other passes is controlled to be 10-15%, the rolling speed is controlled to be 65 mm/s, and the final rolling temperature is 550 ℃; the thickness of the plate is 2.5mm,

Stamping: heating the plate to 600 ℃ for stamping, cooling the plate to room temperature after stamping to obtain an oil pan body,

And (3) heat treatment: heating the oil pan body to 550 ℃, preserving heat for 3 hours, then cooling to 450 ℃, cooling at the rate of 30 ℃/hour, preserving heat for 3 hours, then cooling again to 250 ℃, cooling at the rate of 60 ℃/hour, preserving heat for 1 hour, then air-cooling to room temperature,

Sand blasting and coarsening: carrying out sand blasting and coarsening treatment on the inner surface and the outer surface of a rectangular groove body in the oil pan body, wherein sand grains are quartz sand, the size of the sand grains is 20 meshes, the sand blasting pressure is 0.4MPa, the distance between a sand blasting gun and a workpiece is 40 mm, and compressed air is used for blowing clean after sand blasting;

coating the inner surface: coating a zirconia coating on the inner surface of the oil pan groove body; the zirconia coating is formed by coating on the inner surface of the tank body of the oil bottom shell, and the zirconia material layer comprises the following components in percentage by weight: 66 parts of zirconium oxide, 37 parts of chromium oxide and 19 parts of tungsten carbide, heating the coated oil pan to 500 ℃, heating at a heating rate of 50 ℃/h, preserving heat for 2 h, then cooling to 400 ℃, cooling at a cooling rate of 20 ℃/h, preserving heat for 1 h, then cooling again to 250 ℃, cooling at a cooling rate of 40 ℃/h, preserving heat for 5 h, then air-cooling to room temperature,

coating the outer surface: coating a high-temperature-resistant coating on the outer surface of the oil pan body, wherein the coating comprises the following components in parts by weight: 100 parts of epoxy modified organic silicon resin, 14 parts of nano-grade aluminum oxide, 14 parts of silicon dioxide, 10 parts of mica powder, 20 parts of sodium silicate, 5 parts of ethylenediamine, 3 parts of boron oxide, 1 part of zinc phosphate and 38 parts of ethanol to obtain the final oil pan.

Claims (1)

1. A copper alloy engine oil pan comprises an oil pan body, wherein the oil pan body is provided with a groove body with a rectangular cross section, the upper part of the groove body is provided with a mounting edge, the inner surface of the rectangular groove body is coated with a zirconia coating, the outer surface of the rectangular groove body is coated with a high-temperature resistant coating,

the method is characterized in that: the oil pan body comprises the following chemical components in percentage by weight: 3.6% of Zn, Mg: 1.8%, Si: 7.6%, Ni: 1.7%, W: 0.78%, Nb: 0.38%, Cr: 0.19%, V: 0.16%, Al: 0.087%, Sn: 0.058%, Ta: 0.019% >, Ce: 0.017%, and the balance of Cu and inevitable impurities;

the oil pan preparation method comprises the following steps: the method comprises the following steps: preparing alloy according to the proportion, smelting and pouring raw materials, demoulding, and performing heat treatment on the obtained cast ingot: firstly, heating the cast ingot, raising the temperature to 500 ℃, raising the temperature at a rate of 40 ℃/h, preserving heat for 2 h, then lowering the temperature to 400 ℃, lowering the temperature at a rate of 100 ℃/h, preserving heat for 5 h, then raising the temperature to 450 ℃, raising the temperature at a rate of 25 ℃/h, preserving heat for 4 h, then lowering the temperature to 300 ℃ again, lowering the temperature at a rate of 50 ℃/h, preserving heat for 3 h, then lowering the temperature to 200 ℃ again, lowering the temperature at a rate of 40 ℃/h, preserving heat for 4 h, then air-cooling to room temperature,

forging: heating the cast ingot to 800 ℃, preserving heat for 4 hours, then forging, wherein the forging starting temperature is 800 ℃, the cast ingot is vertically upset, the stop time of a press is 35mm each time, the final forging temperature is 700 ℃,

rolling: heating the forged blank, wherein the heating temperature is 750 ℃, cogging rolling adopts 8 passes, the relative reduction rate of the pass is controlled to be about 12-15% during cogging, the rolling speed is controlled to be 10mm/s, the slab is subjected to heat preservation at 600 ℃ for 5 hours after cogging, then the temperature is raised to 700 ℃, the heat preservation time is controlled to be 4 hours, then hot rolling is carried out on the slab, the hot rolling is carried out for 12 passes, the relative reduction rate of the initial pass is 8%, the relative reduction rates of other passes are controlled to be about 10-15%, the rolling speed is controlled to be 65 mm/s, and the final rolling temperature is 550 ℃; the thickness of the plate is 2.5mm,

stamping: heating the plate to 600 ℃ for stamping, cooling the plate to room temperature after stamping to obtain an oil pan body,

and (3) heat treatment: heating the oil pan body to 550 ℃, preserving heat for 3 hours, then cooling to 450 ℃, cooling at the rate of 30 ℃/hour, preserving heat for 3 hours, then cooling again to 250 ℃, cooling at the rate of 60 ℃/hour, preserving heat for 1 hour, then air-cooling to room temperature,

sand blasting and coarsening: carrying out sand blasting and coarsening treatment on the inner surface and the outer surface of a rectangular groove body in the oil pan body, wherein sand grains are quartz sand, the size of the sand grains is 20 meshes, the sand blasting pressure is 0.4MPa, the distance between a sand blasting gun and a workpiece is 40 mm, and compressed air is used for blowing clean after sand blasting;

Coating the inner surface: coating a zirconia coating on the inner surface of the oil pan groove body; the zirconia coating is formed by coating on the inner surface of the tank body of the oil bottom shell, and the zirconia material layer comprises the following components in percentage by weight: 66 parts of zirconium oxide, 37 parts of chromium oxide and 19 parts of tungsten carbide, heating the coated oil pan to 500 ℃, heating at a heating rate of 50 ℃/h, preserving heat for 2 h, then cooling to 400 ℃, cooling at a cooling rate of 20 ℃/h, preserving heat for 1 h, then cooling again to 250 ℃, cooling at a cooling rate of 40 ℃/h, preserving heat for 5 h, then air-cooling to room temperature,

Coating the outer surface: coating a high-temperature-resistant coating on the outer surface of the oil pan body, wherein the coating comprises the following components in parts by weight: 100 parts of epoxy modified organic silicon resin, 14 parts of nano-grade aluminum oxide, 14 parts of silicon dioxide, 10 parts of mica powder, 20 parts of sodium silicate, 5 parts of ethylenediamine, 3 parts of boron oxide, 1 part of zinc phosphate and 38 parts of ethanol to obtain the final oil pan.