CN111069505A - Automatic forging process for bearing ring - Google Patents

Abstract

The invention discloses an automatic forging process of a bearing ring, which comprises the following steps: cutting off a blank from a precision bar, discharging the blank by an automatic discharging machine, automatically feeding the blank into an intermediate frequency furnace, heating to 1125 +/-5 ℃, preserving heat for 5 minutes, and then automatically pushing the blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form 360-degree water spray without dead angles and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is provided with a water spray interlocking device; the automatic hollow-out feeding machine drives a blank to pass through the center of the spiral high-pressure water spray pipe and then is sent into a lower die upsetting die hole on the numerical control hydraulic forging machine by the forging manipulator 1, the blank is sent into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is taken out by the forging manipulator 2 after forging and flattening and then is sent into a die stamping die hole for punching, and the blank is taken out by the forging manipulator 2 after finishing and is sent into a ring rolling machine for reaming.

Description

Automatic forging process for bearing ring

Technical Field

The invention belongs to the technical field of forging, and particularly relates to an automatic forging process for a bearing ring.

Background

The bearing ring is an annular part of a radial rolling bearing with one or more raceways, and the forging of the bearing ring is a more complicated process and often has the defects of burrs, pits, deformation and the like.

Disclosure of Invention

In order to solve the technical problems, the invention provides an automatic forging process for a bearing ring, which has the following technical scheme: the forging process comprises the following steps:

1) and casting a bar steel ingot with the following alloy components in percentage by weight: 0.18-0.25% of C, Mn: 0.85 to 1.2, Cr: 1.15 to 1.45, Si: 0.17 to 1.35, Mo: 0.18 to 0.28, Ni: 0.030 or less, S: less than or equal to 0.030 percent, P: less than or equal to 0.035, Cu: less than or equal to 0.030, and the balance being Fe;

2) cutting off a blank from the bar steel ingot obtained in the step 1) by a precision bar, then discharging the blank by an automatic discharging machine, automatically feeding the cut blank into an intermediate frequency furnace, heating the cut blank to 1125 +/-5 ℃, keeping the temperature for 5 minutes, and then automatically pushing the cut blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form water spray without dead angles of 360 degrees and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is; the hollow automatic feeding machine is characterized in that a blank is driven to pass through the center of a spiral high-pressure water spray pipe and then is fed into a lower die upsetting die hole on a numerical control hydraulic forging machine by a forging manipulator 1, the blank is fed into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is fed into the lower die flattening die hole by the forging manipulator 2 after forging and flattening, the blank is taken out and fed into a die stamping die hole for punching by the forging manipulator 2 after forging, the blank is taken out and fed into a ring rolling machine for reaming after finishing, the blank is taken out and fed into a carburizing furnace by the forging manipulator 2 for carburizing, salt bath heating quenching is carried out at 890-910 ℃, tempering is carried out at 250 ℃ for 1-1.5 hours, the lower die upsetting die hole, the lower die flattening die hole and the lower die stamping die hole are combined on a lower die, the lower die is fixed on the numerical control hydraulic forging machine, an upper die is also arranged on the numerical control hydraulic forging machine corresponding to the lower die, the, water spray nozzles are arranged around the cooling water pipe and used for cooling the upper module and the lower module; the hydraulic forging machine is also provided with a cooling liquid spray head and a water spray interlocking device.

Compared with the prior art, the invention has the advantages that: less oxidation, uniform crystal grains, reduced forging deformation force, improved metal plasticity, and reduced defects such as burr and pit.

Detailed Description

Example one

An automatic forging process for a bearing ring comprises the following steps:

1) and casting a bar steel ingot with the following alloy components in percentage by weight: c:0.18, Mn: 0.85, Cr: 1.15, Si: 0.17, Mo: 0.18, Ni: 0.010, S: 0.010, P: 0.015, Cu: 0.010, and the balance of Fe;

2) cutting off a blank from the bar steel ingot obtained in the step 1) by a precision bar, then discharging the blank by an automatic discharging machine, automatically feeding the cut blank into an intermediate frequency furnace, heating the cut blank to 1120 ℃, preserving the heat for 5 minutes, and then automatically pushing the cut blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form 360-degree water spray without dead angles and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is; the hollow automatic feeding machine is characterized in that a blank is driven to pass through the center of a spiral high-pressure water spray pipe and then is fed into a lower die upsetting die hole on a numerical control hydraulic forging machine by a forging manipulator 1, the blank is fed into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is taken out and fed into a die stamping die hole by the forging manipulator 2 after forging and flattening, the blank is taken out and fed into a ring rolling machine for reaming after being completed, the blank is taken out and fed into a carburizing furnace by the forging manipulator 2 for carburizing, salt bath heating quenching is carried out for 890 ℃, tempering is carried out at 250 ℃ for 1 hour, the lower die upsetting die hole, the lower die flattening die hole and the lower die stamping die hole are arranged on a lower die in a combined mode, the lower die is fixed on the numerical control hydraulic forging machine, an upper die is arranged on the numerical control hydraulic forging machine corresponding to the lower die, the upper die is provided with an upper die upsetting die head, the upper die flattening die, water spray nozzles are arranged around the cooling water pipe and used for cooling the upper module and the lower module; the hydraulic forging machine is also provided with a cooling liquid spray head and a water spray interlocking device.

Example two

An automatic forging process for a bearing ring comprises the following steps:

1) and casting a bar steel ingot with the following alloy components in percentage by weight: c: 0.20, Mn: 0.95, Cr: 1.35, Si: 1.15, Mo: 0.22, Ni: 0.020, S: 0.020, P: 0.025, Cu: 0.020%, and the balance Fe;

2) cutting off a blank from the bar steel ingot obtained in the step 1) by a precision bar, discharging the blank by an automatic discharging machine, automatically feeding the cut blank into an intermediate frequency furnace, heating the cut blank to 1125 ℃, keeping the temperature for 5 minutes, and then automatically pushing the cut blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form 360-degree water spray without dead angles and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is provided; the hollow automatic feeding machine is characterized in that a blank is driven to pass through the center of a spiral high-pressure water spray pipe and then is fed into a lower die upsetting die hole on a numerical control hydraulic forging machine by a forging manipulator 1, the blank is fed into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is taken out and fed into a die stamping die hole by the forging manipulator 2 after forging and flattening, the blank is taken out and fed into a ring rolling machine for reaming after being completed, the blank is taken out and fed into a carburizing furnace by the forging manipulator 2 for carburizing, salt bath heating quenching is carried out at 895 ℃ and tempering is carried out at 250 ℃ for 1.2 hours, the lower die upsetting die hole, the lower die flattening die hole and the lower die stamping die hole are arranged on a lower die in a combined mode, the lower die is fixed on the numerical control hydraulic forging machine, an upper die is also arranged on the numerical control hydraulic forging machine corresponding to the lower die, the upper die is provided with an upper die upsetting die head, the upper die, water spray nozzles are arranged around the cooling water pipe and used for cooling the upper module and the lower module; the hydraulic forging machine is also provided with a cooling liquid spray head and a water spray interlocking device.

EXAMPLE III

An automatic forging process for a bearing ring comprises the following steps:

1) and casting a bar steel ingot with the following alloy components in percentage by weight: c: 0.25, Mn: 1.2, Cr: 1.45, Si: 1.35, Mo: 0.28, Ni: 0.030, S: 0.030, P: 0.035, Cu: 0.030, and the balance Fe;

2) cutting off a blank from the bar steel ingot obtained in the step 1) by a precision bar, discharging the blank by an automatic discharging machine, automatically feeding the cut blank into an intermediate frequency furnace, heating to 1130 ℃, keeping the temperature for 5 minutes, and then automatically pushing the cut blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form 360-degree water spray without dead angles and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is provided with a water; the hollow automatic feeding machine is characterized in that a blank is driven to pass through the center of a spiral high-pressure water spray pipe and then is fed into a lower die upsetting die hole on a numerical control hydraulic forging machine by a forging manipulator 1, the blank is fed into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is taken out and fed into a die stamping die hole by the forging manipulator 2 after forging and flattening, the blank is taken out and fed into a ring rolling machine for reaming after being completed, the blank is taken out and fed into a carburizing furnace by the forging manipulator 2 for carburizing, salt bath heating quenching is carried out at 910 ℃ and tempering is carried out for 1.5 hours at 250 ℃, the lower die upsetting die hole, the lower die flattening die hole and the lower die stamping die hole are arranged on a lower die in a combined mode, the lower die is fixed on the numerical control hydraulic forging machine, an upper die is also arranged on the numerical control hydraulic forging machine corresponding to the lower die, the upper die is provided with an upper die upsetting die head, the upper die flattening, water spray nozzles are arranged around the cooling water pipe and used for cooling the upper module and the lower module; the hydraulic forging machine is also provided with a cooling liquid spray head and a water spray interlocking device.

Claims (1)

1. The automatic forging process of the bearing ring is characterized by comprising the following steps of:

1) and casting a bar steel ingot with the following alloy components in percentage by weight: 0.18-0.25% of C, Mn: 0.85 to 1.2, Cr: 1.15 to 1.45, Si: 0.17 to 1.35, Mo: 0.18 to 0.28, Ni: 0.030 or less, S: 0.030 or less, P: less than or equal to 0.035, Cu: less than or equal to 0.030, and the balance being Fe;

2) cutting off a blank from the bar steel ingot obtained in the step 1) by a precision bar, then discharging the blank by an automatic discharging machine, automatically feeding the cut blank into an intermediate frequency furnace, heating the cut blank to 1125 +/-5 ℃, keeping the temperature for 5 minutes, and then automatically pushing the cut blank into a hollow automatic feeding machine, wherein the hollow automatic feeding machine drives the blank to pass through the center of a spiral high-pressure water spray pipe, the spiral high-pressure water spray pipe is provided with water spray holes, all the water spray holes can form water spray without dead angles of 360 degrees and face the axial center of the spiral high-pressure water spray pipe, and the spiral high-pressure water spray pipe is; the hollow automatic feeding machine is characterized in that a blank is driven to pass through the center of a spiral high-pressure water spray pipe and then is fed into a lower die upsetting die hole on a numerical control hydraulic forging machine by a forging manipulator 1, the blank is fed into a lower die flattening die hole by the forging manipulator 1 after upsetting, the blank is fed into the lower die flattening die hole by the forging manipulator 2 after forging and flattening, the blank is taken out and fed into a die stamping die hole for punching by the forging manipulator 2 after forging, the blank is taken out and fed into a ring rolling machine for reaming after finishing, the blank is taken out and fed into a carburizing furnace by the forging manipulator 2 for carburizing, salt bath heating quenching is carried out at 890-910 ℃, tempering is carried out at 250 ℃ for 1-1.5 hours, the lower die upsetting die hole, the lower die flattening die hole and the lower die stamping die hole are combined on a lower die, the lower die is fixed on the numerical control hydraulic forging machine, an upper die is also arranged on the numerical control hydraulic forging machine corresponding to the lower die, the, water spray nozzles are arranged around the cooling water pipe and used for cooling the upper module and the lower module; the hydraulic forging machine is also provided with a cooling liquid spray head and a water spray interlocking device.