High-strength composite solder

A compound welding and high-strength technology, which is applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., can solve the problems that the strength matching cannot reach the hydraulic cylinder, the welding operation requirements are strict, and the service life is not long. Achieve the effect of increasing the overall strength and mechanical properties, small material deviation, and good matching

Inactive Publication Date: 2019-08-02
HUANGSHI GAOCHAO IND & MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of material, traditional welding rods, such as J506 welding rods, can be used for welding hydraulic cylinders, but this type of welding material has low mechanical properties, and may not meet the requirements of hydraulic cylinders due to strength matching after welding. As a result, the service life after welding is not long, and secondary cracks or leakage are prone to occur.
Special welding rods, such as WE777 special cast iron welding rods, have high strength and can better meet the requirements of hydraulic cylinders, but the cost is high, and the performance is unstable under high temperature conditions, and the operation requirements for welding are relatively strict.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Core preparation

[0037]Firstly, in the form of powder, the ratio of carbon 0.04%, metal silicon 0.50%, electrolytic manganese 7%, electrolytic nickel 10%, metal chromium 5%, ilmenite powder 8%, molybdenum iron: 2.4%, and the rest is iron powder is accurate. Weigh each component material and mix well. Then the mixed powder is pressed into the shape of welding rod, baked in a furnace, first baked at low temperature for 0.5h, then baked at 150°C for 1h, and finally baked at 400°C for more than 1h and sintered into shape.

[0038] coating

[0039] The weight ratio of coating to welding core is 1:3.5; the weight ratio of binder to coating is 1:4.

[0040] According to the ratio of 44% marble, 8% barium carbonate, 25% fluorite, 10% rutile, 10% cryolite, and 3% electrolytic manganese, each component of the coating is accurately weighed in the form of powder, and then mixed evenly. A binder is added to the mixed powder, and the binder is selected from pure sodium water gla...

Embodiment 2

[0044] Core preparation

[0045] Firstly, in the form of powder, the ratio of carbon 0.08%, metal silicon 0.30%, electrolytic manganese 3%, electrolytic nickel 16%, metal chromium 8%, ilmenite powder 4%, molybdenum iron: 1.2%, and the rest is iron powder is accurate. Weigh each component material and mix well. Then the mixed powder is pressed into the shape of welding rod, baked in a furnace, first baked at low temperature for 0.5h, then baked at 150°C for 1h, and finally baked at 400°C for more than 1h and sintered into shape.

[0046] coating

[0047] The weight ratio of coating to welding core is 1:4; the weight ratio of binder to coating is 1:4.5.

[0048] According to the ratio of 45% marble, 6% barium carbonate, 25% fluorite, 15% rutile, 5% cryolite, and 4% electrolytic manganese, each component of the drug skin is accurately weighed in the form of powder, and then mixed evenly. A binder is added to the mixed powder, the binder is pure potassium water glass, stirred a...

Embodiment 3

[0052] Core preparation

[0053] Firstly, in the form of powder, the ratio of carbon 0.06%, metal silicon 0.40%, electrolytic manganese 5%, electrolytic nickel 18%, metal chromium 6%, ilmenite powder 6%, molybdenum iron: 1.8%, and the rest is iron powder is accurate. Weigh each component material and mix well. Then the mixed powder is pressed into the shape of welding rod, baked in a furnace, first baked at low temperature for 0.5h, then baked at 150°C for 1h, and finally baked at 400°C for more than 1h and sintered into shape.

[0054] coating

[0055] The weight ratio of coating to welding core is 1:4; the weight ratio of binder to coating is 1:4.

[0056] According to the proportion of marble 45%, barium carbonate 2%, fluorite 25%, rutile 15%, cryolite 10%, electrolytic manganese 3%, each component of the coating is accurately weighed in the form of powder, and then mixed evenly . Add binding agent in the powder material of mixing, when binding agent selects the mixture...

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PUM

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Abstract

The invention relates to high-strength composite solder. Deposited metal formed by the solder comprises, by mass percentage, 0.04%-0.08% of carbon, 0.30%-0.50% of silicon, 4%-8% of manganese, 10%-18%of nickel, 4%-8% of chromium, 2%-4% of titanium, 0.4%-0.8% of molybdenum, 60%-70% of iron and the balance impurities, specifically, the weight ratio of the nickel to the chromium is 2-3:1. The high-strength composite solder has the high strength and the high mechanical stretch performance, is stable in performance under the high temperature condition, low in cost and few in electric arc splash, and easily achieves slag removal.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a high-strength composite solder. Background technique [0002] The hydraulic cylinder is the actuator in the hydraulic transmission system. It is an energy conversion device that converts hydraulic energy into mechanical energy. The hydraulic cylinder is a mechanical device that realizes reciprocating motion. There are three types of hydraulic cylinders: piston cylinder, plunger cylinder, and swing cylinder. The piston cylinder and plunger cylinder realize reciprocating linear motion, output speed and thrust, and the swing cylinder realizes reciprocating swing, outputting angular velocity (speed) and torque. [0003] The working pressure of the hydraulic cylinder is high, the internal temperature is high during long-term operation, and the sealing requirements are very strict, so the welding quality requirements are very high during production and maintenance. At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/0266B23K35/304
Inventor 田高潮
Owner HUANGSHI GAOCHAO IND & MINING MACHINERY
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