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Cross recess pan head screw machining method

A technology of pan head screw and processing method, which is applied in the direction of manufacturing tools, metal material coating process, coating, etc., can solve problems such as unfavorable processing, and achieve the effects of avoiding surface damage, good sealing, and reducing internal stress

Pending Publication Date: 2022-04-12
贵阳华丰航空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Screws, also commonly known as screws, are parts of fastening objects. They are generally used in machinery, electrical appliances and buildings. They are usually made of metal or plastic, and the grooves engraved on the surface are called threads. , and the installation of screws is generally detachable. The existing part of the screw processing method does not eliminate the internal stress carried by itself before the metal coil is processed, which is not conducive to subsequent processing, and the scope of application of the screw itself is still to be determined. continue to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: A method for processing cross-recessed pan head screws, including the following steps: Step 1, raw material annealing: select a suitable metal wire and coil it into a coil, and then use a transfer car to place the metal coil on a vertical annealing Heating and annealing in the furnace, and then place the coil in a ventilated and cool place for natural cooling. When the metal coil in step 1 is placed in a vertical annealing furnace for heating and annealing, the heating temperature is required to be controlled at 52 degrees Celsius, and the heating time should be Control within 10 minutes;

[0022] Step 2. Pickling and oxidation: Place the metal coil after natural cooling in step 1 in the pickling tank for one soaking, then take it out, dry it and place it in the pickling tank for a second soaking, then take it out and put it in the pickling tank. Rinse with clean water. After rinsing, use phosphate to form an oxide film on the surface of the metal coil. In...

Embodiment 2

[0026] Embodiment 2: A method for processing cross-recessed pan head screws, including the following steps: Step 1, raw material annealing: select a suitable metal wire and coil it into a coil, and then use a transfer car to place the metal coil on a vertical annealing Heating and annealing in the furnace, and then place the coil in a ventilated and cool place for natural cooling. When the metal coil in step 1 is placed in a vertical annealing furnace for heating and annealing, the heating temperature is required to be controlled at 54 degrees Celsius, and the heating time should be Controlled at 12.5 minutes;

[0027] Step 2. Pickling and oxidation: Place the metal coil after natural cooling in step 1 in the pickling tank for one soaking, then take it out, dry it and place it in the pickling tank for a second soaking, then take it out and put it in the pickling tank. Rinse with clean water. After rinsing, use phosphate to form an oxide film on the surface of the metal coil. I...

Embodiment 3

[0031] Embodiment 3: A method for processing cross-recessed pan head screws, including the following steps: Step 1, raw material annealing: select a suitable metal wire and coil it into a coil, and then use a transfer car to place the metal coil on a vertical annealing Heating and annealing in the furnace, and then place the coil in a ventilated and cool place for natural cooling. When the metal coil in step 1 is placed in a vertical annealing furnace for heating and annealing, the heating temperature is required to be controlled at 56 degrees Celsius, and the heating time should be Control in 15 minutes;

[0032] Step 2. Pickling and oxidation: Place the metal coil after natural cooling in step 1 in the pickling tank for one soaking, then take it out, dry it and place it in the pickling tank for a second soaking, then take it out and put it in the pickling tank. Rinse with clean water. After rinsing, use phosphate to form an oxide film on the surface of the metal coil. In ste...

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PUM

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Abstract

The invention discloses a cross recess pan head screw machining method, and relates to the technical field of screw production. The machining method of the cross recess pan head screw comprises the five steps of raw material annealing, acid pickling oxidation, cold heading thread rolling, heat treatment and gluing machining. According to the processing method of the cross recessed pan head screw, internal stress of the metal coil can be effectively reduced, the situation that fracture deformation is prone to occurring during subsequent processing due to the fact that the internal stress of the metal coil is large is avoided, and the rubber gasket is directly arranged on the screw, so that the screw has good sealing performance when being screwed up for use, and the service life of the screw is prolonged. The application range and practicability of the screw are effectively widened, a certain buffering effect is achieved when the screw is tightened, the phenomenon that the surface of a workpiece is damaged due to the fact that the screw is tightened on the workpiece is avoided, the application range of the screw is further widened, the screw has good market prospects, and production steps are simple.

Description

technical field [0001] The invention relates to the technical field of screw production, in particular to a method for processing cross-recessed pan head screws. Background technique [0002] Screws, also commonly known as screws, are parts of fastening objects. They are generally used in machinery, electrical appliances and buildings. They are usually made of metal or plastic, and the grooves engraved on the surface are called threads. , and the installation of screws is generally detachable. The existing part of the screw processing method does not eliminate the internal stress carried by itself before the metal coil is processed, which is not conducive to subsequent processing, and the scope of application of the screw itself is still to be determined. Continue to improve. Contents of the invention [0003] The object of the present invention is to provide a method for processing cross-recessed pan head screws to solve the problems raised in the above-mentioned backgro...

Claims

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Application Information

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IPC IPC(8): C21D1/26C21D9/00C23C8/20C23C22/08C23G1/02B23P15/00
CPCY02P10/20
Inventor 黄忠贤
Owner 贵阳华丰航空科技有限公司
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