CN104589221B - A kind of mixing ball blasting method - Google Patents

Abstract

The invention discloses a mixed shot blasting method. The specific steps of the method are: respectively loading projectiles of one or more specifications into bins 21, 22...2i (i≤n) of auxiliary material bins; opening the auxiliary materials in sequence One or more of the silos 21, 22...2i (i≤n) or multiple corresponding valves are opened at the same time; according to the proportion of the projectiles, the projectiles of one or more specifications enter the main silo Finally, fully mix in the main silo; open the valve connecting the main silo and the shot-peening manipulator pipe, the shot-peening manipulator performs shot-peening on the workpiece; Nozzle, the remaining projectiles in the main silo enter the projectile recovery device. The invention eliminates the risk of microcracks produced by the same shot peening, realizes multi-function of the device, improves processing efficiency and reduces labor intensity.

Description

A kind of mixed shot blasting method

technical field

The invention relates to a shot peening method, in particular to a mixed shot peening technology for 304 stainless steel plates and a method capable of realizing multiple shot peening of different specifications and types of projectiles at one time and mixing of various specifications and models of projectiles in one shot peening.

Background technique

Shot peening is a traditional material surface strengthening method. Accelerated projectiles are used to hit the surface of the sprayed material to cause large plastic deformation on the surface, thereby generating residual compressive stress on the surface of the target body to improve the fatigue strength and stress resistance of the material. Corrosion ability and surface hardness.

Because shot peening does not require high-tech equipment and is suitable for most metals and parts of various shapes, and has low energy consumption, simple operation and convenient implementation, it has been widely used in aerospace, automobile, nuclear power and other fields.

At present, a shot peening device can only use one type of projectile (the text of this application mainly refers to 304 stainless steel balls with a radius of 0.3 to 0.7 mm) to carry out shot peening to the workpiece, and some workpieces have a great impact on the shot peening intensity and surface There are requirements for roughness, which is often difficult to achieve with one type of projectile. It is necessary to use different specifications and types of projectiles for multiple shot peening treatments, or to mix various specifications and types of projectiles in a certain proportion and then complete the shot peening at one time. This function cannot be realized in existing published technical documents. For example, the patent No. 201080002776.7 discloses a shot blasting device in a patent document titled "Shot Peening Device". units and recycling units. The shot peening device involved in this patent can only store projectiles of one specification, so it can only be shot once. For workpieces that need to be shot many times, there are problems such as changing the shot peening device and multiple clamping. affect work efficiency.

Contents of the invention

The purpose of the present invention is to provide a mixed shot peening method, which can meet the requirements of shot peening intensity and small roughness, and can eliminate processing defects such as microcracks caused by shot peening through different mixing methods.

The purpose of the present invention can be achieved through the following technical solutions:

A kind of mixed shot peening method, the concrete steps of this method are:

Put one or more types of projectiles into the 21, 22...2i (i≤n) bins of the auxiliary material bin;

Open one or more of the 21, 22...2i (i≤n) bins of the auxiliary material bins in sequence or open a plurality of corresponding valves at the same time;

Proportion according to the projectile requirements, after one or more specifications of projectiles enter the main silo, fully mix in the main silo;

Open the valve connecting the main silo and the shot blasting manipulator pipe, and the shot peening manipulator will blast the workpiece;

The shot peening manipulator stops peening, and the shot peening manipulator returns to the automatic nozzle changing warehouse to replace the nozzles, and the remaining projectiles in the main silo enter the projectile recovery device.

As an embodiment of the present invention, the specific steps of the method are:

Put one or more types of projectiles into the 21, 22...2i (i≤n) bins of the auxiliary material bin;

Open the valve corresponding to one of the 21, 22...2i (i≤n) bins of the auxiliary material bin;

The required projectiles enter the main silo;

Open the valve connecting the main silo and the shot blasting manipulator pipe, and the shot peening manipulator will blast the workpiece;

The shot peening manipulator stops peening, and the shot peening manipulator returns to the automatic nozzle changing warehouse to replace the nozzle, and the remaining projectiles in the main silo enter the projectile recovery device;

Open the valve corresponding to another one of the 21, 22...2i (i≤n) bins of the auxiliary material bin;

The required projectiles enter the main silo;

Open the valve connecting the main silo and the shot blasting manipulator pipe, and the shot peening manipulator will blast the workpiece;

The shot-peening manipulator stops peening, and the shot-peening manipulator returns to the automatic nozzle changer warehouse to replace the nozzles.

As another embodiment of the present invention, the specific steps of the method are:

Put projectiles of various specifications into the 21, 22...2i (i≤n) bins of the auxiliary material bin;

Open multiple corresponding valves in the 21, 22...2i (i≤n) bins of the auxiliary material bins as required;

Proportion according to the requirements of the projectile, after the projectiles of various specifications enter the main silo, they are fully mixed in the main silo;

Open the valve connecting the main silo and the shot blasting manipulator pipe, and the shot peening manipulator will blast the workpiece;

The shot peening manipulator stops peening, and the shot peening manipulator returns to the automatic nozzle changing warehouse to replace the nozzles, and the remaining projectiles in the main silo enter the projectile recovery device.

Beneficial effects of the present invention:

1. The present invention adopts the method that can realize various specifications and types of projectiles entering or mixing into the shot blasting machine in sequence from different channels, which can easily solve the required shot peening intensity and surface roughness, and eliminates the problems caused by using the same shot peening. risk of microcracks;

2. One-time clamping, the same device can realize the injection of various projectiles, and realize the multi-function of the device, which can not only solve the traditional process method, but also realize the new process requirements required by the current production mode;

3. This device can not only use different specifications and models of shot peening according to the needs, but also does not need to replace the shot peening device when changing the shot peening, which improves the processing efficiency and reduces the labor intensity.

Description of drawings

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the device of the present invention.

In the figure: 1. Main material bin, 2. Auxiliary material bin, 3. Pipeline, 4. Valve, 5. Automatic nozzle changing storehouse, 6. Shot peening manipulator, 7. Projectile recovery device, 8. Shot blaster.

Detailed ways

A kind of mixing shot peening method, in conjunction with technology and accompanying drawing 1, is described as follows:

method one

A variety of projectile spraying process in different time periods: it can be one kind, two or more kinds of projectiles, in the same clamping, the same device can be shot peened in different time periods through different channels and different specifications,

For example: according to the process requirements, the pipeline 3 connecting the main material bin 1, the auxiliary material bin 2, the shot blaster 8 and the projectile recovery device 7 is equipped with a valve 4, and if the projectiles in the auxiliary material bin 2 are required, the 21 valves are opened. After the corresponding valve 4 passes through the main material bin 1, the shot peening manipulator 6 performs shot peening on the workpiece. After a certain period of shot peening, the corresponding valve 21 is closed, the shot peening manipulator 6 stops peening, and the shot peening manipulator 6 returns to automatically change The nozzle bank 5 replaces the nozzles according to the process requirements. At the same time, the projectiles in the main silo 1 enter the projectile recovery device 7, and are separated and recovered in the projectile recovery device 7.

The process also requires 2n projectiles in the auxiliary material bin 2, then open the valve corresponding to 2n, pass through the main material bin 1 and then the shot peening manipulator 6 to perform shot peening on the workpiece. 6. Stop the shot peening, and the same shot peening manipulator returns to the automatic nozzle changer warehouse, and replaces the nozzles according to the process requirements. The projectiles in the main silo 1 enter the projectile recovery device 7, and are separated and recovered in the projectile recovery device 7.

If according to the process requirements, other specifications and types of projectiles are required to continue the shot peening, then open the valves corresponding to the auxiliary material bins one by one, the shot peening will be closed for a certain period of time, the shot peening manipulator 6 will stop the shot peening, and the machine will return to the replacement nozzle, and replace it according to the process requirements Nozzle, the projectiles in the main feed bin 1 enter the projectile recovery device 7, and are separated and recovered in the projectile recovery device 7. So repeated, in order to achieve the required shot peening intensity and surface roughness.

Method Two

One injection process of mixing various projectiles: According to the process requirements, if a certain process needs projectiles in 21, 22... 2i (i≤n) in auxiliary material bin 2, then open the valves corresponding to 21, 22... 2i, and press the various projectiles After proportioning is required, in the main silo 1, the proportioning of various projectiles is required and then fully mixed. Open the valve leading to the shot peening manipulator 6 and start to peen the workpiece. After a certain period of time, the specified process requirements are met. , the shot-peening manipulator 6 stops the shot-peening, and the machine returns to the place where the nozzle is changed, and the nozzle is replaced according to the process requirements. At the same time, the shot in the main feed bin 1 enters the shot recovery device 7, and is separated and recovered in the shot recovery device 7.

The main silo 1 shown in Figure 1 is provided with a vibrating and stirring device, which is convenient to mix the projectiles evenly; a sorting device is provided in the projectile recovery device 7, and the recovered projectiles are sorted by mechanical vibration and sorting layers with different apertures. selected, and transported to the corresponding auxiliary material bin 2 through the conveying device. The projectile recovery device 7 enters a vibrating screen sorting device after shot peening, sorts projectiles of different sizes and then sucks the projectiles into the nozzle through vacuum technology, thus completing a cycle. Wherein, the vibrating screen sorting device and the vacuum technology, the vibration and stirring device provided in the main silo 1 are all conventional technologies and devices in the prior art.

The above content is only an example and description of the structure of the present invention. Those skilled in the art make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the structure of the invention or Anything beyond the scope defined in the claims shall belong to the protection scope of the present invention.

Claims (3)

1. a kind of mixing ball blasting method, which is characterized in that this method concretely comprises the following steps：

The bullet of one or more specifications is respectively charged into 21,22 ... 2i (i≤n) storehouses in auxiliary material storehouse；

One or more of 21,22 ... 2i (i≤n) storehouses in the auxiliary material storehouse are opened in order or are opened simultaneously multiple corresponding Valve；

It is matched as needed for bullet, after the bullet of one or more specifications enters major ingredient storehouse, is sufficiently mixed in major ingredient storehouse；

Connection major ingredient storehouse and the valve of blasting machinery hand pipeline are opened, blasting machinery hand carries out shot-peening to workpiece；

Blasting machinery hand stops shot-peening, and blasting machinery hand returns to be moved at nozzle storehouse certainly, replacement nozzle, remaining bullet in major ingredient storehouse Into bullet retracting device；

Bullet enters bullet retracting device in major ingredient storehouse, wheel abrator, is separated and recovered in bullet retracting device, bullet recycling Device sorts bullet, and is delivered to corresponding auxiliary material storehouse；

The bullet is 304 stainless steel steel balls of 0.3 to 0.7 millimeter of radius；

This method carries out mixing shot-peening for 304 stainless steel materials；

Pipeline between connection major ingredient storehouse, auxiliary material storehouse, wheel abrator and bullet retracting device is equipped with valve；In bullet retracting device Equipped with sorting unit, the bullet of recycling is sorted by the sorting layer of mechanical oscillation and different pore size, and passes through transmission dress It puts and is delivered to corresponding auxiliary material storehouse；Major ingredient storehouse connects blasting machinery hand, and wheel abrator is connected with bullet retracting device.

2. a kind of mixing ball blasting method according to claim 1, which is characterized in that this method concretely comprises the following steps：

The bullet of one or more specifications is respectively charged into 21,22 ... 2i (i≤n) storehouses in auxiliary material storehouse；

Open the valve corresponding to one in 21,22 ... 2i (i≤n) storehouses in the auxiliary material storehouse；

Required bullet enters major ingredient storehouse；

Connection major ingredient storehouse and the valve of blasting machinery hand pipeline are opened, blasting machinery hand carries out shot-peening to workpiece；

Blasting machinery hand stops shot-peening, and blasting machinery hand returns to be moved at nozzle storehouse certainly, replacement nozzle, remaining bullet in major ingredient storehouse Into bullet retracting device；

Open the valve corresponding to another in 21,22 ... 2i (i≤n) storehouses in the auxiliary material storehouse；

Required bullet enters major ingredient storehouse；

Connection major ingredient storehouse and the valve of blasting machinery hand pipeline are opened, blasting machinery hand carries out shot-peening to workpiece；

Blasting machinery hand stops shot-peening, and blasting machinery hand is returned from moving at nozzle storehouse, replaces nozzle.

3. a kind of mixing ball blasting method according to claim 1, which is characterized in that this method concretely comprises the following steps：

The bullet of plurality of specifications is respectively charged into 21,22 ... 2i (i≤n) storehouses in auxiliary material storehouse；

Multiple corresponding valves in 21,22 ... 2i (i≤n) storehouses in the auxiliary material storehouse are opened on demand；

It is matched as needed for bullet, after the bullet of plurality of specifications enters major ingredient storehouse, is sufficiently mixed in major ingredient storehouse；

Connection major ingredient storehouse and the valve of blasting machinery hand pipeline are opened, blasting machinery hand carries out shot-peening to workpiece；

Blasting machinery hand stops shot-peening, and blasting machinery hand returns to be moved at nozzle storehouse certainly, replacement nozzle, remaining bullet in major ingredient storehouse Into bullet retracting device.