High-speed flame sand blasting process

Abstract

The invention discloses a high-speed flame sand blasting process, relates to the technical field of sand blasting surface treatment, and aims to solve the technical problems that in the prior art, a sand blasting machine used for cleaning only adopts a traditional sand blasting mode to remove paint on workpieces, but impurities and finish paint attached to the surfaces of some workpieces are difficult to completely remove, and the work efficiency is low. And the surface cleanliness after sand blasting is not high enough. Comprising the following steps that S1, the surface cleanliness and smoothness of a workpiece are determined; s2, abrasive material category determination; s3, determining the granularity range of the abrasive; s4, determining a sand blasting distance; s5, flame jet gas parameters are set; s6, flame sand blasting operation is carried out; the grinding materials comprise but not limited to quartz sand, carborundum, iron sand, river sand, garnet sand, brown fused alumina, white fused alumina, glass sand, silicon carbide, resin sand, ceramic sand, steel sand, steel shots and alumina sand, the grain size of the quartz sand is 0.3-3.5 mm, the grain size of the carborundum is 1-4 mm, the grain size of the garnet sand is 1-2 mm, and the grain size of the river sand is 0.5-2.5 mm.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting surface treatment, in particular to a high-speed flame sandblasting process. Background Art

[0002] Sandblasting machine is a kind of air conveying machine. It uses compressed air to transport powdered granular materials from one place to another in a pipeline. In the process of converting kinetic energy into potential energy, the high-speed moving sand particles scour the surface of the object, thereby improving the surface quality of the object. However, the sandblasting machines currently used for cleaning only use traditional sandblasting to remove paint from workpieces. However, it is difficult to completely remove impurities and topcoat attached to the surface of some workpieces, and the surface cleanliness after sandblasting is not high enough. Therefore, the market urgently needs to develop a high-speed flame sandblasting process to help people solve the existing problems. Summary of the invention

[0003] The purpose of the present invention is to provide a high-speed flame sandblasting process to solve the problem mentioned in the above background technology that the sandblasting machine currently used for cleaning only uses the traditional sandblasting method to remove paint from the workpiece, but impurities and topcoat attached to the surface of some workpieces are difficult to completely remove, and the surface cleanliness after sandblasting is not high enough.

[0004] To achieve the above object, the present invention provides the following technical solution: a high-speed flame sandblasting process, comprising the following steps: S1: Determination of workpiece surface cleanliness and smoothness; S2: Determine the abrasive category; S3: Determination of abrasive particle size range; S4: Determine the sandblasting distance; S5: flame injection gas parameter setting; S6: flame blasting operation; The types of abrasives include but are not limited to quartz sand, corundum, iron sand, river sand, garnet sand, brown corundum, white corundum, glass sand, silicon carbide, resin sand, ceramic sand, steel sand, steel shot, and alumina sand. The particle size of the quartz sand is 0.3-3.5 mm, the particle size of the corundum is 1-4 mm, the particle size of the garnet sand is 1-2 mm, and the particle size of the river sand is 0.5-2.5 mm. The temperature range of the flame sand blasting operation is: 250-900°C.

[0005] Through the above scheme, the flamethrower and the sandblasting head are integrated into one, and the flame is used to heat the surface of the workpiece while spraying out sand for treatment. On the one hand, after the surface of the workpiece is heated, impurities attached to it can be more easily peeled off. On the other hand, some abrasives of special materials can also quickly reach high temperature after being heated, so that impurities on the surface of the workpiece can be removed more quickly during sandblasting, such as iron sand, steel sand, steel shot, river sand, etc., and some abrasives of special materials become more brittle and easy to break after being heated, and will not damage the surface of the workpiece, but play a protective role, such as quartz sand, corundum, garnet sand, brown corundum, white corundum, etc., which can not only improve the surface treatment efficiency of the workpiece, but also improve the surface cleanliness and smoothness of the workpiece. In a preferred example, the present invention can be further configured as follows: in S4, the sandblasting distance range is: 15-35 cm.

[0006] In a preferred example, the present invention can be further configured as follows: in S4, after the sandblasting distance is determined, the angle is adjusted according to different positions of the workpiece, and the angle range between the sandblasting jet and the workpiece surface is controlled to be: 15°-90°.

[0007] In a preferred example, the present invention can be further configured as follows: in S5, the flame gas includes a fuel gas and an oxidant, the fuel gas includes but is not limited to acetylene, hydrogen, and propane, and the oxidant is oxygen.

[0008] In a preferred example, the present invention can be further configured as follows: in S5, the parameter range of the flame injection speed is: 1800-5600m / s.

[0009] In a preferred example, the present invention may be further configured as follows: in the above S6, when the flame sandblasting head used in the flame sandblasting operation is in operation, the flame spraying direction is consistent with the sand body spraying direction.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The invention integrates a flamethrower and a sandblasting head into one, and uses flame to heat the surface of the workpiece while spraying out sand for treatment. On the one hand, after the workpiece surface is heated, impurities attached to it can be more easily peeled off. On the other hand, some abrasives of special materials can also quickly reach high temperature after being heated, so that impurities on the workpiece surface can be removed more quickly during sandblasting, such as iron sand, steel sand, steel shot, river sand, etc. Some abrasives of special materials become more brittle and easy to break after being heated, and will not damage the surface of the workpiece, but play a protective role, such as quartz sand, corundum, garnet sand, brown corundum, white corundum, etc., which can not only improve the surface treatment efficiency of the workpiece, but also improve the surface cleanliness and smoothness of the workpiece. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0012] Workpiece Abrasive Abrasive particle size / mm Operating temperature / ℃ Sandblasting distance / cm Spray Angle / ° Injection speed / m / s Aluminum Alloy Quartz sand 0.3 250 15 15 1800 The surface of the aluminum alloy workpiece after grinding is smooth and clean.

[0013] Workpiece Abrasive Abrasive particle size / mm Operating temperature / ℃ Sandblasting distance / cm Spray Angle / ° Injection speed / m / s Painted wooden door Ceramic Sand 1.2 250 35 15 1800 The surface of the painted wooden door after sanding is smooth and clean.

[0014] Workpiece Abrasive Abrasive particle size / mm Operating temperature / ℃ Sandblasting distance / cm Spray Angle / ° Injection speed / m / s Iron White Corundum 2 300 20 30 2000 The surface of the iron parts after polishing is smooth and clean.

[0015] Workpiece Abrasive Abrasive particle size / mm Operating temperature / ℃ Sandblasting distance / cm Spray Angle / ° Injection speed / m / s Irregular steel structure Steel grit 2 400 35 90 5600 The irregular steel structure has a smooth surface and a clean surface after grinding.

[0016] In the above embodiments, the types of abrasives include but are not limited to quartz sand, corundum, iron sand, river sand, garnet sand, brown corundum, white corundum, glass sand, silicon carbide, resin sand, ceramic sand, steel sand, steel shot, and alumina sand. The particle size of quartz sand is 0.3-3.5 mm, the particle size of corundum is 1-4 mm, the particle size of garnet sand is 1-2 mm, and the particle size of river sand is 0.5-2.5 mm. The temperature range of flame sand blasting operation is: 250-900°C.

[0017] The sandblasting distance range is: 15-35 cm.

[0018] After the sandblasting distance is determined, the angle is adjusted according to the different positions of the workpiece. The angle range between the sandblasting jet and the workpiece surface is controlled to be: 15°-90°.

[0019] The flame gas includes fuel gas and an oxidant. The fuel gas includes but is not limited to acetylene, hydrogen, and propane. The oxidant is oxygen.

[0020] The parameter range of flame jet speed is: 1800-5600m / s.

[0021] When the flame blasting head used in flame blasting is in operation, the flame spraying direction is consistent with the sand body spraying direction.

[0022] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A high-speed flame sandblasting process, characterized in that: The steps include: S1: Determination of workpiece surface cleanliness and smoothness; S2: Determine the abrasive category; S3: Determination of abrasive particle size range; S4: Determine the sandblasting distance; S5: flame injection gas parameter setting; S6: flame blasting operation; The types of abrasives include but are not limited to quartz sand, corundum, iron sand, river sand, garnet sand, brown corundum, white corundum, glass sand, silicon carbide, resin sand, ceramic sand, steel sand, steel shot, and alumina sand. The particle size of the quartz sand is 0.3-3.5 mm, the particle size of the corundum is 1-4 mm, the particle size of the garnet sand is 1-2 mm, and the particle size of the river sand is 0.5-2.5 mm. The temperature range of the flame sand blasting operation is: 250-900°C.

2. A high-speed flame sandblasting process according to claim 1, characterized in that: In the S4, the sandblasting distance ranges from 15 to 35 cm.

3. A high-speed flame sandblasting process according to claim 2, characterized in that: In S4, after the sandblasting distance is determined, the angle is adjusted according to different positions of the workpiece, and the angle range between the sandblasting jet and the workpiece surface is controlled to be: 15°-90°.

4. A high-speed flame sandblasting process according to claim 1, characterized in that: In S5, the flame gas includes fuel gas and an oxidant, wherein the fuel gas includes but is not limited to acetylene, hydrogen, and propane, and the oxidant is oxygen.

5. A high-speed flame sandblasting process according to claim 4, characterized in that: In S5, the parameter range of the flame injection speed is: 1800-5600m / s.

6. A high-speed flame sandblasting process according to claim 1, characterized in that: In S6, when the flame sandblasting head used in the flame sandblasting operation is in operation, the flame spraying direction is consistent with the sand body spraying direction.