CN103557235A

CN103557235A - Manufacturing method for bearing roller needle

Info

Publication number: CN103557235A
Application number: CN201310472943.XA
Authority: CN
Inventors: 王天波
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-12
Filing date: 2013-10-12
Publication date: 2014-02-05

Abstract

The invention relates to a manufacturing method for a bearing roller needle. The manufacturing method comprises the following steps of 1) selecting materials: upsetting and pickling; 2) putting materials into a 500 ton presser and hot forging at a temperature of 1,000-1,500 DEG C; 3) transferring the materials into a vacuum sintering furnace for heating and sintering at a pressure of 200-300 MPa, then carrying out oxygen-free quenching at a temperature of 80-230 DEG C; 4) carrying out cold rolling treatment after cooling; 5) carrying out vacuum heat treatment with a bright quenching furnace, a quenching temperature being 1,200 DEG C and a temper temperature being selected at 650 DEG C, and cooling with water after tempering; and 6) drawing into spindling rods, cutting, and grinding by a grinding machine to obtain a plurality of roller needles. The method is not complex in process and is suitable for large-scale production of roll balls.

Description

A kind of making method of bearing needle

Technical field

The invention belongs to mechanical field, particularly a kind of making method of bearing needle.

Background technique

Bearing needle is a kind of very important rolling member, once deform or cracked, can cause the part of equipment to run improperly, and even stall, causes the potential safety hazard in production.

Special due to needle roller shape, its process step is different in ball again, and its force way is also different, and in prior art, the technological process of normal application is: the process of forging, hot rolling, cooling, annealing, quenching, tempering and grinding.

Summary of the invention

The making method that the object of this invention is to provide a kind of bearing needle, the needle roller quality that this method is made is good, and the life-span is long, the running of energy effective guarantee machinery equipment.

The technological scheme adopting is:

A making method for bearing needle, comprises the following steps:

1), selection: pier is thick, then carries out pickling.

2), then material is put into the press machine of 500 tons, 1000～1500 ℃ of temperature are carried out forge hot.

3) material transfer is being carried out to heat-agglomerating to vacuum sintering furnace, pressure 200-300Mpa, then carries out anaerobic quenching, 80～230 ℃ of temperature.

4) after cooling, carry out cold-rolling treatment.

5) then with bright hardening furnace, carry out vacuum heat treatment, 1200 ℃ of quenching temperatures, tempering temperature is selected in 650 ℃, water-cooled after tempering.

6) be drawn into elongated bar, cutting, grinding machine mill, obtains a plurality of needle rollers.

Its advantage is:

The needle roller quality that this method is made is good, and the life-span is long, the running of energy effective guarantee machinery equipment, and step is simple, and technique is uncomplicated, is applicable to a large amount of balls of producing.

Embodiment

embodiment 1

A making method for bearing needle, comprises the following steps:

1), selection: pier is thick, then carries out pickling.

2), then material is put into the press machine of 500 tons, 1000 ℃ of temperature are carried out forge hot.

3) material transfer is being carried out to heat-agglomerating to vacuum sintering furnace, pressure 200Mpa, then carries out anaerobic quenching, 80 ℃ of temperature.

4) after cooling, carry out cold-rolling treatment.

embodiment 2

A making method for bearing needle, comprises the following steps:

1), selection: pier is thick, then carries out pickling.

2), then material is put into the press machine of 500 tons, 1500 ℃ of temperature are carried out forge hot.

3) material transfer is being carried out to heat-agglomerating to vacuum sintering furnace, pressure 300Mpa, then carries out anaerobic quenching, 230 ℃ of temperature.

4) after cooling, carry out cold-rolling treatment.

embodiment 3

A making method for bearing needle, comprises the following steps:

1), selection: pier is thick, then carries out pickling.

2), then material is put into the press machine of 500 tons, 1200 ℃ of temperature are carried out forge hot.

3) material transfer is being carried out to heat-agglomerating to vacuum sintering furnace, pressure 270Mpa, then carries out anaerobic quenching, 210 ℃ of temperature.

4) after cooling, carry out cold-rolling treatment.

Claims

1. a making method for bearing needle, is characterized in that comprising the following steps:

1), selection: pier is thick, then carries out pickling;

2), then material is put into the press machine of 500 tons, 1000～1500 ℃ of temperature are carried out forge hot;

3) material transfer is being carried out to heat-agglomerating to vacuum sintering furnace, pressure 200-300Mpa, then carries out anaerobic quenching, 80～230 ℃ of temperature;

4) after cooling, carry out cold-rolling treatment;

5) then with bright hardening furnace, carry out vacuum heat treatment, 1200 ℃ of quenching temperatures, tempering temperature is selected in 650 ℃, water-cooled after tempering;